-l7lllllllll UNCLASSIFIED SURFACE TECHNICAL APPLICATIONS … · 2014. 9. 27. · ad-ai59 700 fairchild afi washington revised umifi s ofiary surface weather obser..iui air force environental

AD-AI59 700 FAIRCHILD AFI WASHINGTON REVISED UMIFI S IARY OFSURFACE WEATHER OBSER..IUI AIR FORCE ENVIRONENTALTECHNICAL APPLICATIONS CENTER SCOTT A.. SEP 85

UNCLASSIFIED USAFETAC/OS-8S/OSI F/G 4/2 NL-l7lllllllll

lEEElllhlllllIIIIIIIIIIIIIIlIIIIIIIIIIIIIlIIIIIIIIIIIIIl

1*0

43 5

IIL11114*0

AD-A159 700 DATA PROCESSING BRANCH

USAFETACAir Weather Service ( MAC )

,9' TECH CAL I I3RFI: 'V EOk t.,-" ... t,,. ,..t,,OF 0 SEP "I 4.15URFA'C L 2 "CD: TT AFI L C-2)2[5

-'F," 4- - 1 4,, :,C7 43 'L?-I S SEP 198

".l ~ ~ ~ ~ ~ C L(:. i ] .( : -6

Li ICFEDERAL BUILDING EET

'ASHEVILLE, N. C.DistribULj "B

85 10 03 020

REVIEW AND APPROVAL STATEIENT

This report is approved for public release. There is no objection tounlimited distribution of this document to the public at large, or by theDefense Technical Information Center (DTIC) to the National TechnicalInformation Service (NTIS).

This technical report has been reviewed and is approved for publication.

FOR THE COMMANDER

WAYNE ,. MCCOLLOMChief, Document Research Section

USAFETAC/LDX

I.

V.T

UNCLASSIFIEDWeURI _"_CLA fSiFICATI F U6T-TH1 S PAE-

REPORT DOCUMENTATION PAGEIs. REPORT SECURITY CLASSIFICATION Ib RESTRICTIVE MARKINGS

Unclassified2a. SECURITY CLASSIFICATION AUTHORITY 3. DISTRIBUTION/ AVAILABILITY OF REPORT

2b. DECLASSIFICATION IDOWNGRADING SCHEDULE Approved for public releaseidistribution unlimited.

4. PERFORMING ORGANIZATION REPORT NUMBER(S) S. MONITORING ORGANIZATION REPORT NUMBER(S)

USAFETAC/DS- S- /0 &-1 USAFETAC/DS- IS"/OSr

6 M OF PERFORMING ORGANIZATION 1b. OFFICE SYMBOL 7a NAME OF MONITORING ORGANIZATIONI (if apphcableJ

USAFETAC/OL-A USAFETAC

6L ADDRESS (Oy, State, and ZIPCodu) 7b ADDRESS (CiLy, State, and ZIP Cc*)

Federal Building Scott AFB, IL 62225-5438

Asheville, NC 28801

do. NAME OF FUNDINGISPONSORING b. OFFICE SYMBOL 9. PROCUREMENT INSTRUMENT IDENTIFICATION NUMBERORGANIZATIONj (f appciklb)

Sc ADDRESS (Oy, Stlate, and ZIPCode) 10 SOURCE OF FUNDING NUMBERSPROGRAM PROJECT TASK IWORK UNITELEMENT NO. NO. NO. ACCESSION No.

II 14TpI Ik ecuriqf OskatignJ -

f-A/R c)4/i-p 4r-g u/1PHIN -T7oVw (lo's wo) (Unclassified)

12. PERSONAL AUTHOR(S)

I,. TYPE OF REPORT 13b TIME COVERED 14 DATE OF REPORT (VearMonIL DaiS. PAGE COUNTD S FROM-V'_____ TO&L-U-, S 1Op z 7 320 _

16. SUPPLEMENTARY NOTATION

17 COSATI CODES 1I SUBJECT TERMS (Continue an rinvrm of noce a ry and oclentify by block nuned

FIELD GROUP SUB GROUP *climatology *weather Meteorological conditims

04 024 °(continued over)

19 ABSTRACT (Caocinue on ,everU Of necestary and Wdncify by block number)

A six-part statistical data summary of surface weather observation climatology fors

FAI1o /P Ar s11//* TvWA.Summary consists of: PART A, Weather Conditions and Atmospheric Phenomena; PART B,Precipitation; PART C, Surface Winds; PART D, Ceiling and Visibility; PART E, Psychro-metric Summaries; PART F, Pressure Summaries. See USAFETAC/TN-83/O01 (AD-A132186),An Aid for Using the Revised Uniform Summary Qg Surface Weather Observations (RUSSWOB)

for complete descriptions of contents and instructions for use.

10 DISIKIBUIONIAVALABILITY OF ABSTRALT I21 ABSTRACT SECURITY CLASSIFICATIONOIUNCLASSIFIEDJNIIMITED U SAME AS RPT [ODTIC USERS Unclassified

22a NAME OF RESPONSIBLE INDIVIDUAL 22b TELEPHONE (include Area Code) 22c. OFFICE SYMBOL, -ari. Wakefield (618) 256-2625 USAFETAC/LDD

00 FORM 1473. B MAR IIJ APR edition may be used until exhausted. S}ECtITY CLAS51FICATION OF -HIS PAGEAll other editions are obsolete.

UNCLASSIFIED

le. Subject terms cont.

winds preceipitation temperature visibility

barometric pressure relative humidity

sky cover psychrometric data ceiling

Revised Uniform Summary of Surface Weather ObservationsRUSSWO

FP4IRCA/I- iFB vcAJ/Nm-V,

S PA A/ E

.SPokAAgE 4r-,g

SuoA 7 47B

The number that identifies the station inthis sumnnary is an AWS Master Station Cata-log number. This number is comprised of theWMO number with the addition of a suffix zero; or,in cases where there is no designated WMO nutler,a 5-digit number created in agreement with WMO r,:;..,plus a sixth qualifying digit. These numbers (als,referred to as DATSAV or USAFETAC numbers) uniquel'identify each of more than 15,000 reporting stat,.around the world. This is the provenance of th-number (e.g., MSC 99999y' whic" w41' a :future CL-A standard ,::t .

.c

Dlst

. .....

E SYK4Cr T4AI CA REVISED UNIFORM SUMMARY

OF SURFACE WEATHER OBSERVATIONS

HOURLY OBSERVATIONS.lo- bic-ualln arc 0$ d..*'1..nd a. tioac FLCOrd or rcuf4-spcool vb.ervallon recordtd at. ocIhcIued hou.rly litter'.ai.

DAILY OBSERVATIONSlolly ubsrvatluos "a.*ietdlu aldab rtcordod w~ repuftiud rore. and comblaoed loto sunry or the Lay otarrnattor,. (CelccltT Ir-

celr -010 ,o Iao m .1, 4y IILO Qn , rno.0km, Lce.)

DESCRIPTION OF SUMMARIES1'rc. Jl ech occ L0 I- I a tbItler iccpt lo1 ar Ins, data compri sgawt toul part oCth Li.. Peced Vaifor.m U~ or Surf.ce UeaIti~r OI..erottco8,,1 'he~e of Ircoci1t~ti. Inlealo- are prepared from. hourly atud dolly oWereatlaws recorded by statlous dp-rted ILy the U. U. 3-C

lce.n ".i awo_ rrin stations uoItC ulailar rtporting practioca.

ilc- oiIl.-io.. n.Otd Li.v CoLluoI..j a~a~r re Inelleled tfo .01. atbLloow

PAT A WIATHER CONDITIONS PART E DAILY MAX. MIN, L MEAN TEMP

ATMOSPI41RIC PHENOMENA EXTREME MAX L MIN TEMP

PA I Is 11CIIATION PSYCIiRO.MITRIC.ORY VS Wit RIUtS

SNOWfALL MEAN & STD DEVY

SNOW DIPTHIDRY SULB1, WEI 11UL11. &. DEW POINTI

PARTC SURFACE WINOS RELATIVE HUMIDITY

PART D CEILING VERSUS VISIBILITY PART fSTATION PRESSURE

SKYCOVIR SEA LEVEL PRESSURE

STANDARD 3.HOUR GROUPSAll sia.ric requiring diurnal variations ore suarited In tight J-Iour periods corresponlding to tb. folloving wet of holy ei.llS

bol-'~.n, Ol l-~.CL, t -Qij, VtIJ-11C-J, 1.0.11100, J5LK).17tA), LOX)-2LLLI, 2102D-23.1 Ioo locs.l standard Lim..

MISSING HOUR GROUPS;..omwry hctsr~ "Ie uttted vhen ol-tioa. eolitoling limited ots-ring gcIhedales did noot report certain tbare-lur period, for any Ira IcI&smooth dI~rnI1 Lt saalable erloli of record. 14-L massing stcten are Blsed LeLov, &ad ax. applicable to all *u-ie. prevaed fr., lW-0)010 CF 00Llon.

0 . llm~lT_________ VIA I__________ ALJULJf wiv~i Klul -

IdIAMK____________JIi____________ t1lOi_________ Lit loU I._________

-- N-Nm m.wm

!

DURING THE LATE 1960'S AND EARLY 1970'S, FAIRCHILD AFB WA WAS ONEOF THE BASES PARTICIPATING IN COLD FOG DISSIPATION TESTS. THETESTS WERE CONDUCTED UNDER "PROJECT COLD WAND" WHICH USEDVENTED LIQUID PROPANE TO DISSIPATE FOG. THE TESTS WERE CONDUCTEDDURING THE WINTERS OF 67-68, 68-69, 69-70 AND 70-71 AND WEREDETERMINED TO BE SUCCESSFUL. THIS METHOD OF COLD FOG DISSIPATIONWAS USED ROUTINELY AND OPERATIONALLY DURING THE WINTERS OF 71-72AND 72-73 BUT WAS DISCONTINUED AFTER 1973.

THESE EXPERIMENTS DO NOT AFFECT THE HOURLY PORTION OF THE RUSSWOAS THE YEARS 1967-1973 ARE NOT USED. HOWEVEi, IN TdE"ATMOSPHERIC PHENOMENA" SECTION WHICH IS DERIVED FROM THESUMMARY OF DAY DATA, THESE YEARS ARE INCLUDED. IT IS DOUBTFULTHAT THESE FEW WINTERS WILL HAVE MUCH EFFECT ON THE LONG TERMSTATISTICS BUT THE USER SHOULD KEEP T#IS INFORMATION IN MIND.

S

S STATION LOCATO K ND N STRUM ENTATION HISTORY __

or AT THIS OCATION L~u_2Ak A STATION FROM To 1

AFB Jun 49 Feb 53 N 4 7

Same Mar 53 Mar 54 Sar,Same Apr 54 Mar 58 Sal-S are Apr 58 Fe 5S Sar'.Samei Mar S1, li Mar a-

.!r(WIND EQIPMENT INFORMATION

r: 52 1

USAIETAS . *9 9 ION. 'It~ 0 ,,;o.,htss l

CIC f' UlPlfU INFORMATgI

S ame Sam

I . Samt, Sa..e

I . r i r.~ R9 3

Same 23 f t

23 ft-

U S AIR FORCEEhvIROUKENTAL TECHNICAL

APPLICATIONS CENTER

PART A WEATHER CONDITIONSThis summary is a percentage frequency occurrence of various atmospheric phenomena and obstructions to vision,

derived from hourly observations, and is presented in two tables as follows:

1. By mouth and annual, all hours and years combined.

2. By moth, all years combined, by standard 3-hour groups.

A percent value of ".0" in these tables indicates lees then .05 percent, which Is usual)) only ooe occurrence.'he various phenomena included in each category on the forms are listed. below:

Thunderstorms - All reported occurrences of thunderstorm, tornado, and waterppout.

Rain and/or drizzle - All liquid precipitation, falling to the ground, not freezing.

rreezing rain and/or freez ij rizzle (glaze) - Precipitation falling in liquid form, but freezing on contactwith &A unheated surface.

Snow and/or sleet ice pelleto) - Included are snow, snow pellets, sleet, snow grains, ice crystals, and icepellets from Jan 68 end later. (Snow pellets also known as soft hail)

Hail - Occurrences of hall and small hail are included.

Percentage of observations with precipitation - Included in this category are the observations when one ormre of the above phenomena occurred. Since more than one type of precipitation may be reported in the sameobservation, the sums of the individual categories may exceed the percentages of the observations with precip.

Fog - Included are fog, ice fog, and ground fog.

Smoke and/or haze - Occurrences of smoke, haze, or combinations of smoke and haze are included.

Bloving snov - Occurrences of blowing snow (also drifting snow when reported from non-EAN sources).

Dust and/or sand - Included are blowing dust, blowing sand, and dust.

Continued on Reverse

A-I

Ulo".ng spray - This Item If reported, Is not 3hovn in a sepu-ate cutegory on this forM but 1.3 Included inthe computation Percentage of Observations vitb Obstructions to Vision, below.

Percentage of observations with obstructions to vision - Included in this category are the obeervatlons vhenone or more of the above obstructions to vision occurred. Since more than one type of obstruction may bereported 1Athe same observation, the sums of the individual categories may exceed the percentage totalcolumns. Also, although precipitation may reduce visibility, it is not considered an obstruction to visionfor purposes of this sunmmry; therefore, the percentage total of obstructions to vision need not reflect thetotal observations vith reduced visibility.

A 2

.~~I . .....

i., 'AL CL IMAOLL, r CONDT.AICO' I'LT C WEATHER CONDITIONS

A v fAI E i, S f ,I : C AL

2f7j it f A .LHII t A e ,AF 6-c A JANST A' O. -A - U.- - -YEARSMO T

C A I , ALL F 'L JL I, C e UB OCCL,4RENCL GL F A TH r.

0,NU ITIONS Fk0 HOJRLY 01,SEQVATIUiN;

" Q FN SNOW k OF SMOKE CUST U OF CBS TC'A,

C,] ,T ' A U . e BA '; .i rFP AND OR HAL CBS WITH FOG AND OR BLOWING AND GB WITH 05SF P. 'F

;'L- ' SLEET PRECP HAZE SSN W) TO VlSON OBS

,ak'. ~ ~ . .L.. . 41L.1.~__ A,

I , ' 4.3 1. lb. . 1.1 42.4 . 3 42.4 930

.. - ., Z' 19.1 . 4.2 44.4 . .3 44.4 930

3. 1. 23.J . 1.3 47.1 . 47.3 93f1

.1 -i . 5.1 42. I: . . . 3c.4 :- . --- -- 39.1 930

1.4.4 ." .1 7 1 35.9 36.5 Q3'

"-?, -." .1 . n, lo . 36.Z. . .c _ 3b.3 931

- 1-2. 4.2 1.0 14.9) 19.5 39.1 34'.1 930

_!

T.4 1.2 il.? Zl.u 4J.7 ! .1 .2 4L'. 7440

USAFfTAC 0 105 OL A, *tOb reTe r 0 THIS FOP. .1A OPSOfIBF

L -tAL .A I1IAI LO,Y AN ,

AI V +EA +: SI+~ A-CAAiAl F~T14 SE ,' IC[ IA C x xxrrrxRrxYrxT

ATMOSPHERIC PHENOMLNA

77 1 F A I CHILO A Fn wA 49-55 ALL

ST ATION 0- -, . YEARS ONT.

P, L C( 1TAGE OF DAYS .41TH VARIOUS ATMOSPHERIC PH[N(JMLNA

r A ALY OBSERVATIONS

W., I EEPZNU; SNOW % OF SMOKE IST S Of CBS 1',V-4. k U AND OR HA.. OES WTTH FOG AND OR OW'ND AID JR 'IT . . +

- ' -SNOW:"F RIZ'LE SLEET PRE-lp HAZE SAID T: I C'_ 06C

JA\ DAILY I.2 r.l 57.4 .1 71.1 64.8 5.9 3.6 67.4 1147!

l .3 377.4 3 .F. 43.1 .3 Z.' 53.4 7.5 -1 56.7 10l45

A' 1.4 37., .7 32. 1.2 '4.5 28.8 3.6 .9 .1 31.2 1147

A' 2.4 41.9 1b.6 1. 47.7 14.1 1.5 .3 15.4 1119/i

.Ay 4.5 43.6 .1 3.9 1.6 44.L 11.3 .3 .5 12.3 1146

Ji i , 1.b 40.3 .4 1.2 4P.4 7.6 .5 .5 8. 5 lOp EU

J1 7.8 23. .1 .4 23.3 .2 .4 .5 3.1 1 1 1 6

1

. 25.9 .6 25.9 3.9 1.3 .1 5.0 11151

2.9 '.S .4 b 28.5 8.3 2.9 .5 10.9 1D74

S.5 7.LJ 1 4.7 .4 37.9 30.6 9

.L, .2 34. 11161

ND ,I .Z 44.2 2.7 28.7 .3 59.4 59.0 9. 1 u. 61 .- k O oC

0%C ?7.e 7.(, 53.6 .1 71.3 68.2 4.1 2.9 69.9 1116'

z 3S. i.s'.2 35.7 4.t ? . 7.2 29.31 3.b 1.0 .2 31.3 13295it _ A z

5O LA.w -S .1 .AOSl

PART A ATMOSPHERIC PHENOMENA

This summary is a presentation of the percentage of days with occurrence of various atmospheric phenomena.These data are obtained from all recorded information on the reporting forms or from hourly data and com-bined into a daily observation,

The descriptions of the phenomena in the Weather Conditions Summary above also apply for the categoriessummarized in these daily tabulations. However, it should be noted that in this summary the columnsheaded "% OF OBS WITH PRECIP" and "% OF OBS WITH OBST TO VISION" show the percentage of days rather thanthe percentage of observations. Since more than one type of precipitation or more than one type of ob-

struation may occur in the same daily observation, the sum of the values in the individual categories maydiffer from the total columns.

A percent vaiub of " ,O0 4n th, thbl6 indicates less than .05 percent, which is usually only one occurrence.

This presentitiod Id by month with annual totals, and is prepared with all years combined.

NOTES I (1) A day with rain bnd/or drizzle was not separately reported in the WBAI data prior to year 1949.Therefore# percentages LY-t-Me column are restricted to the period Jan 1949 and later.

(2) A day ith freezing rain and/or freezing drizzle is also properly reported as a day with rainand or~i:zzle.

(3) A day with dust ahd/ok sadd is included in this summary only wheu visibility is reduced toless tha - 7Wiie,

A- 3

.~~ ~~ . .... ..

G1 -AL CLIMATOLOGY IkANCC-IEl, AILTAC WEATHER CONDITIONSA 1- iEATifR SERVICE/ITACtI

72 5 F AILCJ{LL' AFBL &A 75--5 __

STATION STAT;CN NAME 7Y,

PfHkCENTAGE FREQUENCY OF OCCURRENCE OF WEATHER

CONOITIONS FROM HOUkLY OBSERVATIONS

RAIN FREEZING SNOW % OF SMOKE DuST Of CBS TO'A,

ONT HDS T HDER AND OR RAIN & OR AND OR HAIL BS WITH FOG AND OR SOWING OP C'

LST STORMS SINOW ADO IHCS OODRIZZLE DRIZZLE SLEET PRECIP HAZE SAND TO VIS'CN CBS

_ . 9.3 .9 1C.4 19.8 22.1 .1 .3 .1 22.4 6792

"', .y ._ .. .. 4.j - .0 -12.b _7.6 1-..l .1 7.6 744,0

-.. -. +. . _ 1.2 .3 d.1 _ 2.8 * .2 3.1 72CO

,.-3 L. . . . .1 . .9 . 1.7 .. . . .._- .3 3.u 738C

6-.6 6.8 1.3 .4, 1.0 7016

J., * . , 4.6. .j .0 4.f . .. j

, . 4.0 .9 . . .3 1.3 744.0

.1 .1 5.j 2.3 .2 .7 3.1 72U0

.0 _ u. . S .0 , .. . . .2 7.7 7.4 9O

N__ '.6 .6 7.1 .0 - . 2j3.9 _q .4 .C .2.5 . 2C

UC . 6. 1.2 16.7. 23.7 3'.5 .1 .2 _ _3.7 7,1,0

TOTALS. , 6.9 .3 4.8 .L 11.6 12.2 .1 .1 .3 12.6 87255

USAFET AC 0 10 5(L A "-US 1- 041 - 04 AM OSBTf

-jLk'AL CLIMATOLOGY - A ,C-

,t TAC WEATHER CONDITIONSATI . E A T.if' S~kV I C. /Pl.A C

1278S5 FA I;CHIL_ AFB .A 75-84 -DECSTATiON STATION NAME -- YEARS MONTH

Pt14 i NTAGE_ FPE -ULPCY OF OLCURRENCE OF WEATHER

CON)IiONS FROM HOURLY OBSEVATIONS

R-, REEZ NG SNOW % SMOKE DUST BSOF 0 TOTALMONTHA. P A OP AND OR HAIL OcS WITH FOG AND OR O AND OR WITH O ST NO OF

STORMS SNOWP.ZZLL DRIZZLE SLEET FRECIF HAZE SAND TO VISION )BS

oi C ., 7.5 1.1 1. 22.1: 3b.7 -_36.7 930

L "-fl 1.7 1.3 16. 24.2 34.2 .8 38.5 930

t . 1 2.3 l .8 77.7 49.6 .1 .4 41. ' 930

- I 6.5 1 .4 2 0.. 2b.4 42 .7 .. , .1 42.7 930

4-. . .9 .4 15.7 2u.5 32.4 .2 .1 32.5 930

1- " b.5 . 4 14.6 20.6 29.1 .1 .4 29. 930

- 1.2 1. 1 15.7* . 2.b. 2b.8 . .;e 26.9 930

1-2- l.b 1.2 15.3 23.1. 2 .7 Z9.7 930

TOAL S-______ C." 1.2 lb.7 23.7 34.5 .1 .2 34.1 7441

USAFETAC . 0 rO 5 A

- lmlmiJii lm mmm m~mI

LL HAL CLIMA1OLOG" KANCIJ A, E T AC WEATHER CONDITIONSAlk mVAT R SURVICLIACB

Izip 65 FA I3_H ILUJ AFi , 7 5_- _ 4 NQVSTATION STATION F, ME YEARS MONTH

PL,CENTAGL FRFQUENCY OF OCCURRENCE OF WEATHLR

CONDITIONS FROM HOURLY OBSERVATIONS

t

RAIN FREEZING SNOW % OF SMOKE I DUST %C OBS TOTAt

S ST R NU OR RAIN & OR AND OR HAIL OBS WITH FOG AND OR BSOWIN AND OR WITH OEST NO CI

S T STOSMS SN RFG N R OWG6RZZI E DRIZZLE SLEET PRECIP HAZE SAND TO VISION OBS

:NI 2V. .7 2.3 .J._4 _2_______ d2I 900

, H.. .9 7.1 1S.1 30.0 -4 _ _ c. 9UD

l 1.1 -- 9.2 20.b 36.6 .2 _.3 36.9 90J0

, .11 b.9 .7 9..I b. 3 31.1 I.u .4 31.8 900

t .I.,' } ~ 0 . JD, - 1 -__ *. - . 19.0 ,J 3 . O . 9 ,

|-lI 1 .J .3 7. ----- I.6 t.b _ .. .3 .1 17.3 900

IL -2, 7.8 .9 . 7.7 . 15 b~. 2 -1Z 4, , 1501 . _O O

-2. ' .4 .3 7.7 16.6 19.7 .6 20.2 900

TOTALS - I i

.. .6, 7.7 LI17. 1 23.9 1 .4 .14 .0 211.5 72U0

USAFETAC ,u. ' 0-10 -SIX Al, tRVOJS EDnS of IE Tot, ARE OS$OREtE

GLCIAL CLIMATOLOGY ?,hAN(HA,- T C WEATHER CONDITIONS

AT-, .E AT-,I SLkVICL IMACFe

1 P27 5 I ., ICHILL AF B wA 75-84 OCTSTATION STATFON NAME YEARS MONTH

I'L.CLNTAGL FREQUENCY OF OCCURRENCE OF WEATHER

..ONGITIONS FROM HOURLY OBSERVATIONS

AIN FREEZING :SNOW % OF SMOKE DUST % OF 08S TOTALu~C~s UlIRI N AL 05WT O LOWING AND OR WITH ORST NO OFMoNTH -, ..... AND 0 AIN &oR AND OR HAIL ORSWIT FOO AND OR SOWDRiZZLE DRIZZLE SLEET I RECIP. HAZE SNOW SAND TO VISION oBs

.,.I i~_"~ . . .2 7.1 75 -__ . 91

-E,S ..9 . . 6.5 9.6 .1 9.7 930

.i- . 6.9 1.2 .1 7.7 17.7 .i __. 17.7 930

I'5-i1 o.,_ .'j 8. .i 11.5 .5 11.7 930

1.'-14 ___ 8.1 ._ S *1 8.5 .3.5 ____---.3_ 3 .9 930

1"-1 7 .3 6.3 .2 b.3 .2.2 1.3 3.1 930

."-, 4.9 .2 4.9 3.0 .1 3.1 931)

/1 -2 3 5.9 .1 o.2 5.3 .1 _ 5.3 930

TOTAL 6.. t. . f .9 7.5 .2 7.7 7 40

USAFETAC

0

U'A

0-0

A.O

V~CU

EO-t1ON$OI

-15

tot .

t

t SOI

• ! -.

(L. AL CLIMATOLC , -A Cti

- _AfLTAC WEATHER CONDITIONSAl., .EATHFH SftV1CL/,XAL

0 'lets i'1 HIL~, AFb .A ____________ _ SPST A', C* : -' E YEARS MONTH

. FqLITAGL FPiQUtNCY OF OLCURRENCE OF WEATHER(IN[IIIONS FHOM HOURLY OBSERVATIONS

I N SNOW % OF SMOKE DUST % OF OBS TOTAL

OE AND OR HAIL OBS WITH FOG AND OR SNOWING AND OR WITH CBST No OF

• " ZLE .LEET PRECIP i HAZE SAND TO VISION OS

Li .LD-U. .1 5.1. - ~ 5.L 1.8 -s - ......,.-3 . 90f1

U - ,.4 5.4 4 .u .j .1_ 4.1 900

_ . -- 4. , . 4.1, b.0 .. 6.2 900

_ .- 1S . 5.3 5. 3.1 *b 3.7 900

.3 . ,.3 . ,i 9 - "l. z1. 90al

.-I, A EL- 4 1. Z" 9l00

1-23 .6 S.3 a,. . 1.3 -.2 .6 1.6 900

TOTALS I•SAEA1 5.1 !02.3 zIT 7SI 3.1 7200

USAFETAC 0u 010 510L AJ, NR lUS FDWT-S Of I IS I A.1 OS TI

7 GL. AL CLIMATOLOGY :IkANCHif!Af L 7AC WEATHER CONDITIONSAl * EAT-JR SERVICL/MAC

12 78-S 5 FAll-CHILC AFb 6~A ________75-84 __ __ - - - AUGSTATION STATIO0N N"ME YEARS NMUII-

Pl;tC[NTAGE FREQUENCY OF OCCURRENCE OF WEATHERCONDJITIONS FROM HOURLY OBSERVATIONS

RAI FEEIN SOWOFSM KEDUST % OF OR S TOTALHOURS THUNDER. RA FRING S R NDO HAI OF SMOKEOAN BLOWING ADO IHCS OO

MONTH L S I STORMS AND OR RAR SNO ORD AND ORT HAIL R WIH FG [ANfRSODRIZZLE DRIZZLE SLEET IFRECIF. I HAZE SAND TO VISION 085

A (-0 .J 2 .7 ~ __ 3.7 .69-3

-s 1.1 4.3 4.3 1.11 .5 1.9 930

vr .1 5. _ 5.1 2.5 .3 I__2.L 930

-11 3 3 _3-.9_- 1 .5 . __ .4 2.3 930

1 -1 . 3.4 ___ 3.4 .3 .5 .9 93 V

1ji .-8 4 .0 P. .2 .~_ .3 .b 930

*--? 9 3.9 .49 1 6 9.4 .

ii-~ .0 3.9 3.t, .4 . 3

TOTALS4.J 4.U .9 .1I .31 1.3 7-440.

USAFETAC 0S1 5f SOL A 1,hmoo FON S Of THIS "OM Aft ORSOCEFI

S L, IAL CLIMATOLOGY ,RANCH1j. LtAC WEATHER CONDITIONSAlt, EAT-ER S[kVIC .,'MAC

7.Z185 FAIL [LHIIj_ AF-WA 75 -87--_ -- L-,-YERSTATION ST'C AMEYEARS

'L,CENTAGE FREQUENCY OF OCCUPRENCE OF WEATHERCONDITIONS iROM HOURLY fBSERVATIONS

RAIN FREEZING SNOW % OF SMOKE DUST OF CBS TOTAL

MONTH hUs THUNDER I ANS0 DOR0IBLOWINOL T STOMS AND OR RAIN & OR AND OR HAIL OBS WITH FOG AND OR SOW AND OR WITH CBST NO OF

DRIZZLE DRIZZLE SLEET PRECIP HAZE SAND TO VISION OBS

kAL 11.,:L ...- .2 .1_.7_... -- &--"

*-'4.3 4.3 .8 .3 1.1 899

d-'- .1 6.5 ' .5 .1.3 . 1.6 931!

.' '-1 . ... , .4.4 1 - .3 1. . 930

. -1'4. . .1 . _ 1 4_ - 9.3 _

1~- o 3.4, 3.4 .1 .. 93k

i 1

-2 1.-1 4.0 - '4.L' 2 _, ..-

TOTALS_. '.b ... .'b46" .6 .3 . 72

USAFETAC JULY064 0-10 SIX0 A. PI), SOUS EOITIO"S OF THIS FOR Alt OSO T

J] | t I;AL CLIMAIOLObY -iANCHL'? i LA1AC WEATHER CONDITIONSA .! EAYHER SERVICE/IMAC

*'781S FAikCHI[L AFE Al 75-84 JUNSTATION STATtO N N~AME _ YEARS M-1T

tL, CNTA6L FRLCUFNCY OF OCCURRENCL OF WEATHERCONDITIONS FROP, HOURLY OBSERVAIIONS

SNO % OF SMOKE DUST C OF ORS TOTALMONTH . ,, - A R~' ~ i. GA AND OR HAIL OS WITH FOG - AND OR wiTH ORYT NO OF

SAZZL DRIZZLE SLEET i PRECIP HAZE SAI.D TO V6S1ON ORS

. . 1 I.1 2.1 2.1 l 871

. 3.. 8.3 2.8 .1 2.6 909

'-1 .2 '.1 9.1 1.8 . .1 1.9 900

1 /- 1 . . 8.1 -3.1 1.2 - _ .b__ 1.8 9uO

t .l -I / .,6 . : 5~,... . . . . . . .9 1.1 896

1 I.-7 1 -- -. 7 6.4 . 6.4 .9 . . .. .9 . 1.6 9-

1-23 1. 5 .6,5 .4 _- 1.0 _839

II

TOTALS 0 6.8 6.e ' 1.3 -. .1 ' 1.8 , U16

'SFEA 7- 0C i LAm

AL IAL CLIIATOLOGY % ANCHI AIETAC WEATHER CONDITIONSA] ,.EAThi k SERVICE T-AL

STATION F 1TTIi-L M I -A-E ..... YEARS MONTH

PLC-IUTAGL FREQUENCY OF OCCURRENCE OF WEATHERCONOITIONS FROM HOURLY OBSLRVATIONS

PAiN FREEZING SNOW % OF SMOKE DUST % OF OBS TOTALMONTH HOURS THUNDER BLOWINGSTORMS AND OR RAIN & OR AND OR HAIL OBS WITH FOG AND OR SNOW AND OR WITH CEST NO OFDR ZZtE DRIZZLE SLEET PRECIP HAZE SAND TO VISION OBS

. ' , 4 .-4 .9 5.3 923

-f:. . .2 .. 7_ 5-.1 . b.2 930

12-1 _ 1 11.5 _. _ 11.6 2.3 1.3 3.5 930

1,--14 .2 .. , .1 .2 _ 9.0 .5 1.4 1.9 929

I - 1 1 1 .a -5. .. 2.U .0 92E

1~Z -2 A . 1 U 911

TOA S . .2 .1 8.9 1.7 I1.3 3.J Z385

USAFETAC 0 10 3. A . u -. l A . .s . . ..s O Al 0 ... . .. _ 1R.

-i -

Gi.,,:;AL CLIMATOLOGY R,(ANCHJ'AFLI A(: WEATHER CONDITIONSAT, EATA R SERVICk /MAC

* ,27R:,5 FAI CHILD AF8 4A 76-85 APRSTATION S1ATIONNAME Y YEARS. . MONTH

P-.',ICETAGE FRtQUENCY OF OCCURRENCE OF wEATHERLONDITIONS FROM HOURLY OBSERVATIONS

H OURS THUNDER RAIN FREEZING SNOW 0 % OF SMOKE BLOWING DUST OF OBS TO'AlLOUR S TU ER AND OR RAIN & OR AND OR HAIL I CBS WITH FOG AND OR SOW AND OR WITH CBS

T NO OFMONTH S T STOFMS AN RRI RSNOW

DRIZZLE DRIZZLE SLEET PRECIP HAZE SAND TO VISION CBS

P .0- .2 1. 6.U 1.6 . Z.. _ . 9 -

7.1 . 8.2 3.9 3. -9_0

8.9 9.4 ' 9. 4 9U0

7.1 1.L .3 2.2 .1 .1 2.4 900

1.-1. 7.3 _ 1.1 .1 6.9 1.2 .3 .6 2.1 qo.

1-1t .6 8.9 .. t. .31 9.b - .9 .2 - .4 2.6 _ 9U0

1 -i,. _ ;7 7.6 . ... ,9 7.8 1.0 .. . .1.2 900

1.2 b.6 1.1 .2 1.3 900

-_ .- -- - -. -- --_ - - - - ~I __ _ _

TOT L3 .2 1.2 1.2 .1 8.1 2.8 .1 . 3.1 72011

USAFETAC . 0-10 510 A P. Ivous -TION5 OF TMIS "M All OSSOEtT

G -AL CLIMACCLOI.Y KrANLH

.',A L TAC WEATHER CONDITIONSA dI, .AT ihk SEFkVICL.IMAL

- FAIIJ-HILV AFE .A 7_ -_MHARSTA TIO N S 'A ThO N N A M E YEA RS -- --- M H

I'L'CLNIAGL FREQULNCY Of OCCURRENCE OF ,.EATHEPCONDIIIONS FROM HOURLY OBSERVATIONS

HOIRS THU'.)R RAIN FREEZING SNOW % OF SMOKE DUST OF OBS TOTALMONTH STOR .S D OR RAIN & OR AND OR HAL I OBS WITH FOG AND OR BLO G AND OR WITH OBST NO OF

DR!ZZLE ' DRIZZLE SLEET I PRECIP HAZE SNOW SAND TO VISION ORS

- - ~iliI~i--------. -6.6 [ 6I.6 i

L - . E, _ 12.5 1.__ 11. __ Q_,L__ 11.4 93r

1 I.0 l. __ 16-.b 930

- .1 9. U 1 _ 1 9. 11.9_ .3 .. . 930

1'-1 * 13.2 . -, + L _ 5.1. - -. ... . 3 5 5 9 jC

. i',-i .R 11.3 3.1 .. " 4.U Z . . .. 4. 3.7. 9

I - ' .2 1.3 1O.Q Z .22 .. 2 .- 93

.- ? _ 1.3 7. . 9.7 3.5 3.5 _ 930

TOTAL U 1 n 1Z.61 7. .1 .1 7.I Z4!10

,SAFETAC 0 10 5(O L A), PWOU$ FNTIONS O ISO AR OMOETE

C -,.P.L CLIMATOLOGY PRANCH.' L TAC WEATHER CONDITIONSA 1,, EATH R SERVICL/AC

7 2 ,7r,5 FA PCHILb AFD bWA 7b-85 FEBSTATION STATION NAME YEARS MObNTH

PL'CENTA(DL FREQULNCY OF OCCURRENCE OF WEATHER'COND1IONS FROM HOURLY OBSERVATIONS

HOURS DER RAIN FREEZING SNOW % OF SMOKE DUST % OF OBS TOTALMONTH LS THUNR AND OR RA:N & OR AND OR HAIL OBS WITH FOG AND OR RLOWNO AND OR WITH RST NO OF

DDRIZZLESLEET PRECIP. HAZE SAND TO VISION ORS

,-{ ___- _ .4 iL1.T , 10." 19. 22.5 * 1 22.5 P49

- 9.4 1 .5 1O. I, 21.U ] 26.3 .4 26.5 B49

-, 11.F 1.Q 14.6 2t,.4 32.3 .7 32.6. 849

1 -ii I 1 .4 : 1 24.3 32.3 .2 .5 .1 33..j R49

1 .I I,...... . 9.5 . 11 ] .5 70-1 20.1 .l 1 .2 20.4I 849

I. . .4 7.1 15.u 14.3 . 2 .2 _14.7 849

L .7" .b.: .... 15.2 12.8 .4 . .2 13.4 F49

1-2 _ . 9 .8 .1 V. 1 16.7 16.1 P_ .1 .. 16.3 849

TOTALS 1'.3 . lu.4 2 22.1 .1 .3 *! 22.4 679?

USAFETAC , , 0 10 5f0L A., P-1sLt, O..I 'I 'I Alot O$Ml IfI

U S AIR FORCEENVIRONI ENTAL TECHNICAL

APPLICATIONS CENTER

PART B PRECIPITATION, SNOWFALL R SNOW DEPTH

This part of the Uniform Ssistary conFlsts of eight sumnarI.e,. derived from daily observations as follows:

1. The first set presents, iii three staLies, the ~ t IMency of various daily amounts of PRECIPITATION,SNOWFALL, end SNOW DE17TH. The dntly amount summary is piepered by month and annual, all years combined,and includes percent sf day; with sieasurable mnotnts; percent of day.s having none, traces, and givensrMyivnts; ar.d means, grentest and least wmonthly s:aouts. (The lost three statistics are omitted from thesnow depth summmary hec t.-e of their doubtful and limite-d value.) A total count of valid observations isgivei for months -ad tvsua[. S1ai-,ions are included in which a portion or all of the period may containmonths with mlsslug 6nys. This will be noted un the sunmary pages. A percent va.ue of ".0" in thesedaily aniount tbias 5.idicatos les- than .05; percevit which is usually only one occurrence.

2. The second set of three tables presents the extreme dai] amoiuts, by individual yesr and month, ofPRECIPITATION, SNOWFALL. and SNOW DEPi for the eutire 1,F.riod of record available. Also provided arethe means and stendard deviations for each month and nnntu:l (Fall months) and the total valid observationcount. An asterisk (-) is printed in any year-month bloc when tle extreme value is based on an in-complete month (at least one day missing for the month). When a month has valid observations reportedbut no occurrences, seros are given in the tables as follows:

EXTHEME DAILY PRECIPITATION ".00" equals none for the month (hundredths)IIREME DAILY SNOWFALL '.0" equals none for the month (tenths)

EXTREME DAILY SNOW DEPTH "0" equals none for the month (whole inches)

3. The third set of two tables provides the total monthly tunounts of FRECIPITATION and SNOWFALL for each year-month and annual. Also prepared are the means, standard deviations, and total number of valid observationsfor each month and annual (aLL months). An asterisk (*) is printed In each data block if one or more daysare missing for the month. No occurrences for a mouth are indicated in the same manner as in the extremetables above. If a trace becomes the extreme or monthly total in any of these tables it is printed as"TRACE."

Continued on Reverse Side

O V,11iimp C'or m "ne iril et.indlirl devi ,titi, d ,t i,, ii lrr Ie,''rm h

S- a

NOTES: (1) The above studies may also be prepared for stations operating for less than full months forportions or all of the period of record. ThiLi may include stations operating 5 or 6 days aweek and those with only random days misaing. An asterisk (*) in the data blocks will givean indication that a month is incomplete. Please refer to Station History at front of bookand observation counts in each summary to ovaisate the amounts of data missing.

(2) Hail was included In snowfall uccurrent:ee in the summary of day observations prior to Jan 56,but these occurrences have been rewoved frum sncwfall category and counted as Hail i, thesesurmia es.

(3) Snow Depth was recorded and puncl-ed at various hours during the period available from U. S.operated stations. The hours used by each service for each period are as follows:

Air Force Stations: U. S. Navy and National Weather Service (USWB)

Beginning thru 19415 at OWOIST beginning thru Jun 52 at OO3OGNfVJan 46-May 57 at 1230GM, Jul 52-May 57 at 1231'teJun 57-present at 120UGl.T Jun 57-present at 120OGWf

B-2

- -!

GLPF4AL CLIMATOLOGY - RANCHA

USAFETAC DAILY AMOUNTSAI WEATHFR SIERVICL/MAC

PER~pTj~f~bj~CY OF

tFROM DAILY OBSERVATIONS)

727855 FAIRCHILD AFB wA 43-85

S' ON STATION NAME YEARS

AMOUNTS (INCHES1A PERCENT MONTHLY AMOUNTS

" TOTAL INCHE$1! NON TRACE C' 0205 C6)0 1 25 29 50 5 2 52 250 255 i00 , 00 2 * OVER2COCO F D A Y S

. . .. CO TH S NON

SNOWALL NONE TRACE 0104 0514 1524 253A 3 5 1 4 64 65104 105154 ' 5 5 255504 OVEq5C4 MEASUR OF

ABLE OBS EAN GRE-A'ES t -s'

NONE TRACE 2 3 4 6 7:2 '224 25 J4B 4960 3'627 OVERD .0 AATS

31.S 26.4 4.3 11.I 7.6 9.9 7.2 1.9 42.2 1297 2.06 5.26TRACE,JAN

37.6 23.3 4.2 11.7 6.3 11.1 4.3 1.3 .2 39.1 1158 1.51 3.56 .19!FEB

45.6 21.3 3.9 9.2 5.6 9.7 3.2 1 .4 .1 33.1 1Z95 1.41 3.64TRACEMAI i

50.A 23.3 3.0 6.9 4.2 6.6 3.2 1.0 .1 25.9 1260 1.04 3.12 .O31AER

54.' 18.5 3.5 7.1 4.6 5.8 4.1 1.2 .2 ?6.6 1302 1. 29' 5.95 IMAY

UN 59.3 17.6 2.8 6.2 4.1 5.6 3.2 1.2 . 23.2 ' 1230 1.09 2.49 ' .0 1

77.1 11. 1.9 3.1 2.0 2.2 1.6 "5 . 11.4 1Z71 .48 ?.?9TRACE

AUG 74.4 12.4 3 3.1 1.9 3.1 2.0 .6 .2 13.1 1271 .66 2.92 .iO0

7'1.7 11.8 2.5 4.6 2.8 4.0 2.6 .9 17.6 1Z30 .77 2.16TRCE1SEP

ti.6 13.0 1.9 7.9 4.6 6.1 3. 1.8 " 25.4 1Z71 1.20 6.47TRACE!OCT,

NOV I4.0 19.8 3.3 11.0 7.2 8.9 7.2 2.2 .2 40.1 1256 2.12 6.52TRACr1

DE 2;9 .3 24.7 5.CT 1 1.1 9.81 10.5' 7.1i 2.3 .3 46.0 1271 2.26 4.56 6

52.7 18.6 3.3 7.8 S.I1 7.0 - 1.4 .1, 78.6 151121S.89ANNUAL ].4 0 15-5 1511I5.8 E

USFTA o,,. o-Is-s )OL A) PREVIOU$ E DITIONS OP TRIS PORM AIB O11SOLEE

* GLJPAL CLIMATOLOGY PRANCH

USAFETAC EXTREMEAIR WEATHER SERVICE/MAC VALUES

* PRECIPITAIION

LROM DAI't 26Sf'..

727855 FAIRCHI-UL Af. wA 43-85ITS Dp" %'ATON SAME 'EAR5

24 HOUR AMOUNTS IN INCHES

AN MR 'AR APR MAI J,)N JUL AUG SEP OCT NOV DEC MYEAR TON75

4 1 sTRACE44 *TRAC L *TRACE *58 .4o .52 .02 .02 .13 .15 .70 .334' ..3 .37 .63 .38 .68 .35 TRACE .26 .57 .34 .49 1.08 1.08

t .31 .53 .53 .33 .46 .34 .05 .02 .90 .75 .96 .54 .96141 .18 .14 .25 .20 .15 .25 .10 .15 .21 .82 .SI 1.03 1.0314. .47 1.Zu .16 .52 1.68 .34 .12 .01 .12 .02 .10 .76 1.68

49 . 1.01 1.75 .09 .24 .01 TRACE TRACE .53 .30 .36 .30 1.15" .79 .75 .30 .37 .30 .80 .25 .45 TRACE .%7 .21. .28 .80

51 .26 - 1. .35 .18 .17 .22 .15 .27 .20 .69 .42 1.02 1.U212 .55 .21 .30. .16 .35 .55 .11 .55 .2J .06. .46 .69. .69

53 ,43 .29 .20 .59 1A11 .20 TPACE .59 .32 .10 .74 .76 1,114 . .3b .,2 .06 .24 .20 .35 .44 .48 .46 .31 .34 ,82

'5 .25 .67 .2J .41 .l .39 .17 TRACE .38 .68 .79 .49 .79

5, .48 .34 .24 . 5d .14 .25 .24 .34 .11 .76 .12 .18 ,76157 . , .1 .21 . 14 .4b 1.00 .04 .01 .52 .5 .16 .40 1.005. ,44 .69 .2b .46 .30 .46 .17 .06 .17 .28 .80 .50 .80

..66 36 .40 .19 .51 .32 TRACE 1.05 .41 .32 .77 .40 1.05Il .20 , . 60 .36 1A1.1 .15 TRACt .45 .58 .35. .95 .61 1.130l .61 .69 .34 .36 .51 .40 .37 .23 .08 .45 .42 A55 ,b9

- .4% .44 .51 .E5 .32 .42 .32 .35 .81 .55 .41 .40 .85'2 ." .49 .29 . C .43 .q2 .18 .17 .51 .61 1.12 .55 1.12

64 .If .31 .53 .20 .11 1.41 .41 .53 .44 .22 .4 1.15 1.41tS .44 ._3 .6 1.13 .44 .38 .67 1.3b .08 .03 .S2 .38 1.366 .64 .(T, .76 . 6 .09 .31 .57 .08 .55 .18 .86 .70 .86

67 .65 .13 .67 .36 .47 .70 .08 TRACE .48 .49 .26 .32 .70

6F, 7 .' d.5 .84 .3. .40 .50 .26 .57 - .29 .73. 1.23. .59 1.2369 .72 .5R .28 .b1 .31 .70 .05 .00 .25 .21 .46 .64 .7270 .79 .86 .32 .42 .45 .94 .42 .03 .47, .96 .46 .41 .9671 .64 .29 .71 .7 .49 .54 .30 .18 .30 .69 .32 .96 .96

.3) .24 .35 __.37 .98 .32 .29 .48 A"4 .11 .47 .5b .98

NOTE IBASED ON LESS THAN FULL MONTHSIUJSAF EAC - 5 (01A)

A. R,

GLOBAL CLIMATOLOGY ?RANCHSAFETAC EXTREME VALUES

Alw wEATHER SERVICE/MAC

PRECIPITATION

727855 FAIRCHILO AFV wA 43-85SA . STCOY NAME YEA"


MONTH A .

JAN fEB MAR APR MAY JUN JUt AUG stp (CT NO. DECYEAR MONTHS

73 .55 .22 .40 .66 .79 .17 TRACE .22 .85 .30 .93 .62 .9374 .97 .46 .78 .18 .29 .14 .60 .02 .15. .os .80 .42 .977) .46 .66 .33 .52 .51 .50 1.06 .27 .05 .78 .33 .51 1.0676 .45 .49 .38 .38 .33 .73 .46 .60 .0% .3S .07 .26 .7377 .18 .21 .39 .12 .27 .73 .08 .45 .46 .18 .58 .76 .76'7m .42 .38 .21 .65 .52 .57 .56 .94 .35 TRACE .56 .16 .94'79 .47 .33 .33 .38 .47 .49 .57 .48 .3b .51 .34 .30 .578- ..3 .36 .19 .37 .72 .36 .10, .30 .58 .31 .S7 .92 .92

- .62 .29 .78 .31 .87 .51 .16 .14 .35 .43 41 .64 .87, .55 .57. .65 .79 .07 .52 .34 .25 .44. .58, .33 .50 .79

83 .39 .39 .65 .26 .22 .63 .60 .21 .34 .36 1.09 .52 1.0984 .4. .30 .24. .38. .35 .47 .05 .65 .25 .24. .55 .84 .84185 .33 .21 .35 .15 .20

MEAN -. 489 .43U .452 .373 .458i .47-8 .252 -.321 .360 .403 .55-3- .570 a91S D .18q .24i" A294" .21r' .322 .26-8 .24U" -3-07 -.21' -. 254' .291 .251- .25TOTACOS 129f ii 260 -T3Or -12-30 127 7 1271 12 , 1L--56" 1271 15112

NOTE * IBASED ON LESS THAN FULL MONTHS)

USAF VTAC "0 4W5 (OLA)

AOL M

GLOPAL CLIMATOLOGY PRANCHUSAFITACAIR Y.EATHER SERVICE/MAC

P40NIHLY PR CIPI TAT ICN

727855 FAIPLHILU AFh jA 43-85"<A' Ih I'fO -AE 'A

TOTAL MONTHLY PRECIPITATION IN INCHFS

A',T FEB MAR APR MA' N ., Au(, ,R' N. F'EAR

43 *TRACE44 TRAC' *TRACE 2.U9 .98 .99 .02 .03. .46. .35. 1.90 .994, 1.25 1.38 3.40 .83 2.47 .80 TRACE .51 2.16 .71 2.82 4.28 20.614o 1.26 2.02 2.24 .90 .89 1.10 .05 .02 1.64 1.19 2.73 .5k 14.6247 .59 .19 .68 .79 .28 .63 .18 .27 .44 6.47 2.76 2.39 15.674 1.75 2.97 .32 1.56 5.95 1.41 .26 .01 .?1 .05 .28 2.57 17.34,49 .76 2.97 3.64 .G9 .39 .01 TRACE TRACE 1.19 1.00 1.68 .91 12.64

51, 3. 1.58 1.52 .52 .43 1.86 .31 .45 TRACE 2.45 .93 1.25 14.61S 1 .89 .48 .89 .27 .50 .S3 .43 .32 . ofC 2.47 1.22 3.27 12 .67:

, 3. 37 1.1 .8 .27 .74 1 .32 . .55 .48 .11 .80 3.07 1277

4.fr3 .75 .92 1.23 1.91 .76 TRACE 1.78 .52 .20 1.98 2.17 16.25,4 4.51 1.07 1.37 .23 .65 .47 .6U 1.34 1.62 .57 1.22 1.20 14.ss5s 1.19 1.31 .57 1.19 .12 .60 .72 TRACE .87 1.70 3.15 2.33 13.955 2.717 . .95 .L3 .28 .62 .31 .93 .14 1.51 .28 .71 10.23%7 1.6P .61 1.08 .35 1.38 .85 .C6 .03 .70 1.77 .76 1.23 11.5013 - 1.78 ?.76 .95 1.b6 .73 .84 .35 .06 .33 .76 3.35 1.69 15.26

4.'2 1.73 .83 .56 1.82 .40 TPACE 1.26 1.40 1.20 2.42 1.09 16.73b .l 1.46 2.15 1.51 2.11 .17 TRACE .79 .8 1.08 4.00 1.22 16.24b1 1.7P. 3.56 1.53 .99 1.37 .98 .37 .47 .1 1.13 1.48 2.17 15.97

62 .9 1 1.53 2. 96 1.U7 2.02 .65 .49 .78 1.01 1.68 2.52 1.36 16.15f 2 1.67 .90 1.11 .96 1.06 .26 .5 .91 1.08 2.68 2.23 13.95

64 ?.,'& .78 1.35 .3? .13. 2.49 .59 1.37 .64. .32 2.23 4.55 17.03h. 1. 5 ,? .12 2.25 1.53 .44 .90 2.92 .31 .08 2.64 1.63 lb.10

1 l.' .36 2.64 .36 .34 .90 1.05 .23 .56 .47 3.27 3.28 15.0461 '.(' .44 1.67 1.87 1.43 2.00 .08 TRACE .61 1.78 .91 1.78 15.20b - 1.46 2.54 .99 .(8 .90 1.11, .31. 1.84 1.01. 2.80 3.19 3.06. 19.296 ,..Tb 1.42 .S3 3.12 .85 1.35 .08 .00 .77 .57 .62 3.13 17.6971, 4.4? 1.98 1.07 1.61 .97 1.78 1.02. .03. .55 2.84. 2.08 2.08 20.4871 1.96 .97 2.29 1.57 1.64 1.62 .46 .48 1.31 1.22 1.92 3.07 18.53, .15 1.1 3.1 , 1.23 1.99 4 1.5 .5 1.44 .72, .25. 1.08_ 234 1504A

ITA, A

NOTE I EBASED ON LESS THAN FULL MONTHS)

. . _ I.AC 0-..S (,A)

At AL L IMAIULO(,Y N.ANCH

t AI TAC M "91oA I .1 ATiW P SI RVICI /MACMONTHLY PRECIPITATION

I.iP'-5 fALCHILJ AFB mA 43-a5

TOTAL MONTHLY PRECIPITATION IN INCHES

tAN LE .PAR APR NAy JUN )UL AUG SEP OCT NOV DECSEAR ONTH

74 7.19 .55 1.09 .85 1.r3 .59 TRACE .35 1.42 1.10 6.52 4.56 21.0574 4 .r7 1.84 2.74 .72 1.17 .31 1.19 .03 .15 .08 2.99 2.35 1?.b IT , 2.20 3.U6 1.47 1.65 1.17 1.45 2.29 .60 .05 1.98 1.57 1.58 19.0776 I.ZD 1.20 .75 .92 1.00 1.08 .70 1.89 .04 .60 .28 .73 10.39

.61 .34 1.15 .13 1.59 1.10 .10 1.09 1.58 .42 2.06 4.27 14.444l 1.92 1.44 .72 2.47 2.16 .86 1.65 1.41 .93 TRACE 2.13 1.02 16.7117' . 1.21 2.15 .86 .90 1.35 .81 .57 .95 .74 1.34 1.28 2.06 14. 221

2 .03 1.89 1.10 1.35 2.34 1.36 .22 .47 .88 .96 1.84 4.07 18.51

q] 1.01 1.43 2.19 .10 2.47 1.65 .51 .14 .77 1.32 1.02 2.77 16.084Q-, 2.03 2.14 1.54 2.04. .24 1.19 1.02 .33 1.70 1.68 1.84 2.52 18.27g3 1.82 2.25 2.14 .68 .88 2.40 1.97 .45 .71 1.06 4.57 2.40 21.3394 .9b 1.31 2.nl8 I.53 1.52 1.62 .06 .70 .49 .67 3.99 2.68 17.b1,.ss .41 .94 1.12 .18 .78 -

MEAN -2.061 1 .50' 1.405' 1.042;'1. -- 9 0 -.0 8 8 -81 --63 6-76-S-1 203,2. 12 22 2 6 0 16.6S?

so 1.213 .823 .794 .72f .988' .5168 .641 .668 o517 1.133 1.275 1.094 2.700

T TA OM I 12q7 15t8 1 295 12 b? 1302' 123 1271- 127 1 1 230 127f1- 1256* 1271 15112NOTE * IPASED ON LESS THAN FULL MONTHSI

USAF eTAC OW- (01A)

* GLUQAL CLIMATOLOGY PkANCH

USAFLTAC DAILY AMOUNTSAIk WEATHE R SERVICL/fAC

* PERa,4ijELREQUENCY OF

FROM DAILY OBSERVATIONS

727855 FAIPCHILD AFB wA 46-85

-ATON rSTATION NAME -E ARS-

AMOUNTS (INCHES). .. .. PERCENT MONTHLY AN UISTO

T A L IINCHES

I'T- I NONE TRACE 0C 02 05 06 I0 1I 25 20 50 51 Q -1 2 50 2 5 S SC 5 c <0 " oi - ,30 0

OF D A Y

S NO. . ... WIH NO.

SN 0'ALL NONE TRACE 0104 0514 1524 2534 5 44 4564 0'4 l055 4 55 2!4 25 55C4 OVERSK4 M A U Of

.. . ... ABLE OBS FAEN 6.15' LES "

RNw NONE TACE 1 2 3 46 TIC 324 2536 37 4 0 0 E C9 O6 622 AMTS

)AN 44.0 24.3 9.9 9.7 S.2 2.9 2.1 1.4 .6 31.7 1240 15.1 so.7 3.6

57.4 21.6 6.7" 8.4 3.4- 1.3- .5- . -q 4 .2 ?l . 1130 6.9 31 .bTRACE'FEB

MARb 7.8'. -4. 5.2 1 .4' . .3 .2 *' 12.U 124C 3.3 1 . 4TR*CEI

1. ~. 2* 13. -9 - 1 .4 1. Z .3 . 1 -2.9 1199- .6* b.3 0APR

.AY 3 3.3 .? .2 .4 1?239 .1 1.3 .0M AY

99. 7- . . . . . .. 1 170TRACETRACE .0JUN

S 9U . 9 * -12O9TRACE TRACE .flI JUL

J U L 0 0 .0 1) 1 2 0 9 ' . 13 . " .nAUG

9- -- 7- - -... . ... .. . . .. . . . 1170TRACETRACE .0I SEPOCT 5.3".5 4 .7 .1 .1 1.2 1209 .4 5.0"

NOV 70.4 16.1 4.0 5.1 2.r .9 .8 .5 .2 13.5 1170 5.7

45.9* 26.3-.1 10.1 .s 2.9 1.3 1.7 .2 .1 -7.7 1208 13.8 136.6 .51DECI

F- - .r 10.8 2.8 3.4 -.. 7 .4 .3 .l=.0 9.2 14393 45.9"ANNUAL

USAFETAC _0 155 (OL A) PRVIOUS EDITIONS Of TIlS PORE. ARE OOSOLETE

USAFEAC oc.r

GLUBAL CLIMATOLOGY BRANCHU SAFLTAC EXTREME VALUESAIR wEATHER SERVICE/MAC

SNOWF ALL

127855 FAIPCHILO AFb Ii 4J-a'V..,. 'A N AMf 'EART


Al-A AP APR MA' JUN JUL AUG SEP OCT NOv DECYEAR N.

4, 3., 4.2 3.1 TRACE .U .0 .0 .0 .0 .1 4.0 3.0 4.247 2.0 .8 TRACE 1.0 .0 .0 .0 .0 .0 .0. 1.5. 5.1 5.1'4,, 3.t, 4.5 .4 TRACE TRACE .0 .0 .0 .0 1.0 1.0 6.1 6.1

4'o 5.! 6.4 1.5 .0 .3 .0 .0 .0 .0 TRACE 2.0 3.0 6.41, . s 7.5 3.3 TRACE TRACE .0 .0 .0 .0 TRACE 2.2 2.4 7.5

,14. 3 2.3 1.7 .0 .0. .0 .0. .0. .0. .7. 1.0. 10.8 In.81

',2 6.' 2.1 1.0 TRACE .3 .0 .0 .0 .0 .a TRACE 6.9 6.94.1 1.2 1.2 A1 .J .0 .0 .0 .0 .0 .3 1.8 4.1

4 .5 1.4 .2 TRACE TRACE .0 .0 .j .0 G .0 TRACE 2.1 6:5-. 0.4 .4. 2.0 .4 TRACE . .0. .0 .0 TRACE 7.9. 2.4 7.9

't, 4.S 2.6 2.4 TRACE .0 .0 . .0 .0 1.0 .9 1.5 4.5!

57 3. 2.1 1.5. .1 .b .0 .0 .0. .0 4.8, 1.4 2.6 4.81b 1.7 TRACE 2.0 TRACE .0 .0 .0 .0 .0 .0 3.2 5.0 z.0C

- 4.2 3.b 1.8 TRACE Ii. .0. .0. .0 .0 .0 _ 4.6 2.2 4.661 3.2 1.5 1.9 1.8 .1 .0 .G .0 .0 .0 1.5 2.3 3.2b 6.3 2.3 2.0 .8 TRACE .0 .0. .0. TRACE TRACE 3.1. 2.S 6.362 4.4 2.7 3.9 .9 .3 .0 .0 .0 .0 .0 1.7 .3 4.463 5. 2.(, I.0 .2 TRACE .0 .0 .0 .0 _ .0, TRACE 5.5, 5.96 4 .1 2.5 1.0 1.0 .0 .0 . .0 .0 TRACE 5.8 5.5 5.865 4.S 1. 0 .2 1.2 .0 .0 .0 .0 .0 .0. 4.O 6.C. 6.0

66 2.6 1.C, 3.8 TRACE TRACE .0 .0 .0 .0 .5 1.5 3.8 3.8

67 2.2 Z.S 2.1 .2 1.3 .0 .0 .0 .0, TRACE. 4.0 4.6 4.666 3.4 .4 TPACE TRACE TRACE .0 .0 .0 .0 .0 1.0 4.8 4.86 7.3 1.[) ,2.2 .8 .0 .U .0 .0 .0 TRACE TRACE.* 3.0 7.37u 3.5 1.5 5.4*TRACE*TRACE .0 .0 .0 .0 TRACE 3.4 3.0 5.4I1 3.0 2.3 .9 TRACE TRACE 0 .0 .0 .0 2.8 3.2 6.C 6.07? 4.5 2.6 1. 1.0 .0 .0 .0 .0 TRACE I.1 TRACE 2.573 3.6 2.2 .7 .6 TRACETRACE .0 .0 _ .0 1.1 8.0 4.8 8.074 5.6 1.9 1.0 .2 TRACE .0 .0 .0 .0 .0 .5 5.5 5.6

75 7.8 8.8 4.3_ 2.7 TRACE .o...... .0_ .0 .3 5.2 4.7. F3.8MEAN .. _ _

NOTE * (BASEO ON LESS THAN FULL MONTHS)

USAF ITAC :: -WS OJ-(01A)

GLOBAL CLIMATOLOGY 'ARANCHUSAFETAC EXTREME VALUESAld WEATHER SERVILCE/MAC

SNOWE ALL

7Z7855 FAI(CHIJ..0 AFB wA 46-85TAT ,ON STATION NAME


MONTHw AL,ERAB JAN FEB MAR APR MAY )jN JUL AUG SEP OC T NOV DEC MONTHS'EAR ON

7L 4.5 1.9 3.2 .6 . .0 .(E .0 .b .0 .1 1.5 4.577 2. . 1.0 1.3. TRACE TRACE .0 .0 .0 TRACE TRACE . 4.9 8.3 8.37.. 5.1 5.2 .9 .3 TRACE .0 .U .0 .U TRACE 3.8 2.3 5.?279 4.9 2.7 .3 .4. TRACE .0 TRACE. .0 .0 TRACE 3.1 3.3 4.9? 4.3 3.2 1.5 TRACE TRACE TRACE .0.J .0 .0 TRACE 1.0 3.0 14.3P 1 3.3 2.3 TRACE TRACE .4 TRACE . c .0 TRACE .0 1.3 4.5 4.5

8 2 6. C 1.0 TRACE 2.0 TRACE .0 . c .0 .0 TRACE 2.5 4.5 6.0P3 4.3 2.0. TRACE. TRACE IRACE TRACE . .0 .U TRACE 1.4 3.8 4.014 2.3 4.2 .5 .7 .5 .0 .C .0 .0 TRACE 6.0 5.9 6.0

3.2. 3.2 1. T ACE IR ACE.

4 26 - - 2.8 44-~- -~ -RC- - 14 2=~ 4- 4 .= --

-mFAN '2628 1.7 + '' 08TRCTETRACE RAC .342~ 4.05 5.61so 1.53i 1.881' 1 .313 .637 T .273 .00 .000 .000 .000 .911 2.153 2.083 1.598

TOTAL o0s 124cl i1-3d IZOT 1i90 1239* 11-70 12-0 -1 1170 1209 1170 1208 14393NOTE * (BASED ON LESS THAN FULL MONTHS)

USAF ITAC * o- 5 (OIA)

GLOFAL CLIMATOLOGY QRANCHUSAFE TACAIk wEATHLR SERVICe/MAC XX

4 MONTHLY SNOWFALL

7ZP55 FAIRCHIL, AFL uA 46-85

TOTAL MONTHLY SNOWFALL IN INCHES

.NT A~ I $ IAI A.'U AAA '(D DUA> M

4,, 7.7 . 3.2 TRACE .0 .0 .b .0 .L .1 11.5 3.L 31.947 8.', .8 1PACL 1.0. . '. . U. .0. .0. . . . . 4.1. 14. 3 Z8.7,

4 8.1 9.2 .5 TRACE TRACE .0 .0 .0 .0 1.5 2.8 29.4 51.549 I1. 1b.1 3.b .1. .0. .0. .0 .0 .0 TRACE 2.0. 4.3 38.8,SL. 44.4 1l]. 3 5.9 TRACE TRACE .0 .0 .0 TRACE 5.9 5.4 71.951 21.0 4.5 5.4 .0 .0 .0. .0 .0 .0L .7 1.0, 32.6 bs.2'

52 '1.6 7.1 3.b TRACE .3 .0 .C .0 .u .0 TRACE 25.6 b8.3

5 10.b 2. 7 2.1. .2 .3 .0. .0. .0 .0L. .0. .3. 4.3 20.2.4 31.h 3.8 .5 TRACE TRACE .0 .0 .0 .0 .0 TRACE 6.2 42.31

1 11.7 17.6 3. 3. .4 TRACE .. .0 .0 .b TRACE. 25.0. 16.3 14.315', 16.5 14.2 6.0 TRACE .J .0 Cl .0 .0 1 . 1 1.8 3.3 42.9151 16.7 4.4 3.5 .1. .. . L . .L 5.0 2.5 6.0 38.2

S6, . TRACE e' TRACE .0 .0 .0 .0 .J .0 7.4 6.8 22.01119 19.4 16.1 2 . TRACE 1.3 .0 G .,0 U. .0, 5.9 5.2. 50.16- 8.1' 3.S t.S 3.. .I .1i u .0 .L .0 . 7.1 34.161 6. 8.3 4.0 .8, TRACE .0 0 .0. TRACE TRACE IJ.1 16.4 45.9

3 8.8 4.5 11.4 .9 .0 .0 .0 .0 .0 .0 4.1 .5 30.26 .6.3 3.2 1.1 .2 IPACE- .0 .0 .0 .0 .0 TRACE 19. b 30.464 19.8 5.9 2.5 2.0 .3i .u .0 .0 .0 TRACE 11.6 36.6 78.465 16. 1.5 .2 1 .5 .3 .0 .0 .0 .0 .0 8.4 19.4 47.3

66 10.8 2.0 7.5 TRACE TRACE .0 . .0 .0 .5 1.7 8.b 31.16/ 10. ]3. 7.3 .5 1.3, .0 .0, .0, .0, TRACE 5.2 I8.b. 47.0b 12.7 .4 TRACE TRACE TRACE .0 .0 .0 .0 .C 1.3 15.7 30.1

, s i. - 5.1 2.2 .8 . .0 .0 .0 .0 TRACE TRACE* 15.2, TA 74.07 18.3 2.5 6.6*TRACE'*TRACL .0 . .0 .0 TRACE 6.9 15.9 * 50.772 8.1 8.0 3.7 TRACE, TRACE. .0 .0 .0n .0 3.8 7.0 34..9 65.6(7 I7. 7.0G 2.8 1.0 .0 .0 .0 .0 TRACE I.I THACE 7.5 36.573 6.3 3.3 1.0 .6 TRACE TRACE .0 .0. .0 1.1. 25.2 8.2- 14.7

74 12.1 6.4' 2.1 .3 TRACE .0 .0 .0 .0 .0 .7 15.2 36.8I

75 *25.17 31.6 9. 1 6.3_TRACE .0 .0, 0 .0, .6, 12.0 8.0. 93MEAN

NOTOTAL COUL 3S 'NOTE ' (, BA'SED ON LESS THAN FULL MONTHS)

f USAF Er,,c - o-W5 (OLA)

GLOBAL CLIMATOLOGY BRANCHUSAFETAC X ! kI ff X IAIR wEATHER SERVICE/MAC

MONTHLY SNOWFALL

727855 FA1I LFJR A 46-&V.' O STATON N+AE

TOTAL MONTHLY SNOWFALL IN INCHES

MONT. ;AN IEB MAR APR MAI j.N )U AUG SEP OCT rov DEC O"S

YEAR oW-.

7b 15.4 6.1 4.2 .6 .u .0 .U .0 .0 .0 .3 5.3 31.977 5.8 1.1 1.8 TRACE TRACE. .0. .0 .0 TRACE TRACE 11.5. 27.1 '47.3!7e 16.7 7.3 2.1 .4 TRACE .0 .0 .0 .0 TRACE 14.8 10.6 51.979 14.6 12.0 .7 .4 TRACE .0 TRACE .0 .0 TRACE 5.3 11.7 44.71p L. 19.5 7.1 4.7 TRACE TRACE TRACE .0 .0 .U TRACE 1.4 8.3 41.Ol81 3.6 2.5 TRACE TRACE .4 TRACE .0 .0 TRACE .0 1.3 13.9 21.78? 28.3 2.2 TRACE 3.2 TRACE .0 .0 .0 .0 TRACE 3.1 16.2 5'r I

83 - 7.3 6.0 TRACE TRACE TRACE TRACE .0 .0 .0 TRACE 4.0 18.9 16 2 z84 4.9 8.6 .5 .7 .5 .0 .0 .0 .0 TRACE II.1 18.3 44.65 4.0 12.2 5.7 TRACE TRACE . '

[MEAN 15.09 6.qi 3.25 .64 .8TRACE TRACE n00 TRACE .40 5.71 13.82 It5;1Itso "l.St'+4 6.- ..762 .19-2O .973 0 .000 .000 1O 6.163'9.345' 16. 261

TOTAL COS 12o -13 + io 1 -y I 9 i2r9 11-1209+ 13'V -9i - IV29+ 110 1284128 143911 NOTE * ERA'ED ONL LESS THAN FULL MONTHS)

USAJ ETAC " o - (lA)

L 'OPAL CL IMA TOLO,,Y 4 :ANCHU ,AFfAC DAILY AMOUNTSAIR .FAThER SFRVICL/'A( ~Or PER( : CTcrf qU ENsCY OF

FROM DAILY ObSERVATIONS

7?74',' FA I((IHIL I AFt, *A 43-85

- . I s- ON FYER

AMOUNTS fNCHES'PERCENT MONTHL2Y AMC,'g$

4 ~ ~ L <3 Al C 2 23 4 OF DAYS O NCPEWITH N

1, 4 N.' 5T 24 14 4 A3 434.. . . . . . . . . . . . . ~ * EASUR OFABLE OBS MAN (RE343''

N "' 11. .5 .3 5.2 151 '1 13.8 7.5 ?.3 ., 58.9 12A8

"E .0 7.8 6. 6.2 4. b 9.3 6.8 4 .2 .7 . b 19.2 115

2.6 7.2 4 I. i. 3 2.2* .6- l.2' 13 3mAR

119 .9 . .1.5 12 (- cAPR

IOU * 1302MAY

I(0. 0 1230

1.0.0 1271

JUL

Ib".l. 1271AUG

ISEP o .0 1230SEP

"c -09 .2 . 2 . 4 - 1" .6 " 1 2 7 1

,'.1 5.? ,. 2.b 2.0 3.3 .6 1Z.2 1254NOV

,43. 7.8 F.,, 8.b 8.7 13.7 7.S 1.2 .2 48.5 1262

H2.4 3.4 .6 2.2 1 .p 3.b 2.4 1 1 .3 -

1 14.2 15093ANNUAL

USAFETAC 5 (L A) 11E4ouS EDITION5 OF TIS FORM ARE ORSOLETE

J USAFTAC,-, -.

GLLIEAL CLIMATOLOGY u RANCHULAFE TAC EXTREME VALUESAIR wEATHER SERVICE/MAC

-NOW OEPTH

127825 FAIRCHILL AFE WA 43-a5

DAILY SNOW DEPTH IN INCHES

, rB -R APR A' ;N AU AuG SEP 0CT 'O, L E

4544 L. (1 U U. 09 3*4 , 3* 2* 3 C 0 C 0 0 C* S* 4 *

4u 4 4 TRACE 0 0 0 0 0 5 5 s4 7 4 3 TRACE 2 0 C 0 0 0 1 L4, 2 5 TRACE 0 0 0. 0 . 1 1 1b 1h4 21 33 1 0 0 0 0 0 0 0 1 3

23 27 4 C 0 0 0 0 0 0 1 3 2 75 5 b 0 0 0 C 0 0 1 C 2

, 36. 12 2 0 a 0 C 0. cl . 12 36-53 9 1 TRACE 0 c 0 C 0 u 0 0 TRACE 9'4 17 3 TRACE 0 5 0 0 0 0 1 3 17'5 6 8 11 C 1 0 0 0 U 0 1C 115 7 b 3. 3 0 C 0 1 1 25I 1 I 1 2 TRACE C 0 C 2 11

S 2 0 ,1U 0 0 0 3 s7 7 IRACL 0 1 0 0 0 0 2 9

b) 2 3 RACE 3- L 0. i. 0 1 3 9

61 t I I TRACE 3 0 C 0 0 0 4 11 116 i 6 ' 6. 0, a 0. 0 0 G 0. 1. TRAC{. 61b IPACF 6 TRACE TRACE 1 0 0 0 0 C TRACE 12 1264 1 1 2 3 0. 0. i C 16 166) 14 4 C 0 0 0 C 0 C 0 4 11 146B T 4 0 0 0 c 0 G 0 1 4 76 1 2 U 0 0 0 0 4 667 5 0. 0 . o c. o 1 c 71

-,

41 45 9 0 0 C 0 C C a 3 47 7 1. 5 0 U U 0 0 0 0 5 7

7 1 1" 5 5 C 0 a C 0 0 1 3 is 15i 9 11) 1 - 1, 0 0 C 0 1 0 40

EAN

TOTAt 046

NOTE * (PASED ON LESS THAN FULL MONTHS)USAF FTAC z 04 5(OIA)

,LU"'8L CLImAIOLOUY BRANCH PkR'[NIAGL FREQUENCY OF 0CCURRENCE UF SURFACE WIND 2IRELION VERSUS oIN3 SPEED

US A C fROM HOURLY 0BSERVATIONS4IR WEATHER SERVICE/MAC

STATION NUMbLR: 1218S5 STAIION NAIL: FAIRCHILD AFB WA PLEI1OD OF RECORO: 76-85MONTH: FEB HOURSILS3J: OO00-0200

... ... ... ... ... ... . ... ... ... ...... ooo...... . .. .. o K° . . ~ .. . . . . . . . . . .. . . . . . . ... . . .. .

WIND SPEEDN 3 NOIS

U IRECIION I I-3 4-b /-30 11-16 17-21 22-21 28-lI 134-40 41-4 7 48-55 GE 56 IIAL HIANI DE[ REL 1 | 1 WIND3O.tGQi°AS3 . 340D

........ ... .76. . .: . ... . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . 4 ... ..

NNf 1.6 1.9 1 .4 .2 5 .2 5..

NE 2.1 2.7 2.2 .8 .1 .4 4.4 1.0

INE 2.4 S.7 2.4 .b 31.0 5 .1

L 1.6 1.5 .6 1.8 4.3

1S I 3.2 .8 .9 .3 2.? 4.1

53 -. .8 .6 .1 2.2 9.9

SS E .7 2.6 .4 .i 1.8 5.I

S 51.3 9.1 3. .7 .3 12.8 5.9

SS. I .9 2.8 4.2 1.8 .5 12.8 8 .5

SW 3.1 3.2 2.6 2.? .7 .4 .3 8. a 3.?

WSW 3.3 .3 .1 .2 .3 2.8 b.0

I 31 3.3 .9 .1 .1 1.3 5.3

WNW -. .5 . .7 4.9

4N . •.3 .5 3.•1

WNN2 .s .1 3.8

. . . .............. . .. . . . . . . . .o o....,..... .... ........... o.o........o.... o................o...........°............VARIABLE

C ALM ......../....// .// / / /L 19.9 /I////?

TOALS 20.1 28.4 19.9 9.Z 3.6 .7 .1 100.0 9.2

..................................... ..... ........ ..... o.....oo....o. o...... .. o.....o .... ..... ... .... ....... o..... .... o....

TOTAL NUMBER OF OBSERVA71ONS: 849

1

uCDBA CLIMAIOLOGY BRANCH PLEENTAGE F~tUUENCR Of OCCURRENCE OF SURFACE WIND DIRECT ION VERSUS VINCI SPEEDU(AATMAC FROM HO U RLY DOSERVATIONS

AIR 1AWATHER SERAICE/MAC

STATION NUMBER: 72785S STATION NAME; FAIRCHILD AFB WA PERIOD OF RECORD: 76-85MONTH: JAN HOURSI..STI: ALL

WIN.D SPEED TN (NaYS

DIRECTION 1 I-i N-A -1 1 I- I& b 72 2-2? 28e-01 lSO-4 NI1-4i 7 NA-55 GEf 6 TOTAL MEANI DE GR EfS) I % BIND

N I .7 1 .1 .2 2 4 4.2

NNE 2.4 4.0 1l.8 .1 .1 .0 9.1 b.7

NE I 2. 0 .4 3.4 .7 .1 .0 12 .4 S.9

ENE I 2.9 9.6 2.5 .3 .0 10.7 5.1

I 2.3 2.2 .5 .0 S.D 7.9

E t .1 .3 .2 .0 1. 3 . k

SF I .7 .5 .2 s1 4 4.0

SF I .8 .R .N .1 .0 21 S. 1

I 2.1 1 .4 1.7 .6 1 .0 6.0 5 .1

SSW I 1. 2.4 2.4 1 .6 .5 .2 .1 R .5 6.6

SR I .4 1.6 1.4 1.A .7 .R .1 .0 7.1 9.9

WSW 1.2 1.0 .4 .5 .1 .1 1.0 7.2

I 1.2 .9 .4 .2 .0 .0 2.7 4.9

WNW I 6 .3 .111 3.7I

NW w .2 .2 .1 .0 .0 N.9

NNW I 2 .3 .1 .6 4.7

TOTALS Z 1.4 21.6 IS.? 6.7 1.9 .7 .2 .0 100.0 4.6

TOTAL NUJMBER Of OBSERVATIONS: 7440

GLOBL CLIMAIOLOGY BRANCH PLEtNTIAGL FREQUENCY UF OCCURRENCE OF SURFACE WIND DIRECTION VERSUS WINU SPiEUUSAF CAC FROM HOURLY OASLRVATJON5

AIR wEATHER SERVICE/MAC

STATION NUMBER: 72185S S8IAION NAMt; FAIRCHILD AFB

WA PERIOD OF RECORD: IL-AGMONTH: JAN HOURS1 S1): 2100-2303

| WIND SPEED TN 8N015

UIRLCION I 1-4 4-6 1-10 I-lIb 1-21 2-71 28-53 34-40 41-47 48-55 UE 5b TOTAL MLAN3OEGREESI I I WIND

... ** *, .. . *o,.. . , * .. *............. °......•......*......*oo............,....***...... . ................................NW 1.0 1.2 .N 2.6 4.5

NNE I .9 33 1.6 3 .2 7.4 S.4

NE I .0 4.8 1.1 .8 I0.1 5.4

ENE 2.4 4.2 2.5 .3 9.1 5.0

L 1.9 1.6 .1 .1 3.8 3.7

ESE .q .5 .4 1 .4 4 .8

SE .5 .1 .2 .2 3.3 b.2

SSE .5 .5 .8 .4 .3 1 .

S 2.5 1.5 1.2 .2 5.k 4.b

SSW 1.8 3.4 2.2 1.2 .6 .3 9.6 7.9

SW 3.6 2.6 3.2 1.1 .6 .5 .3 8.6 0.7

WSW 1 .6 .4 .4 .4 2.9 4.4

I .9 .6 .3 .2 ?.0 4.7

WNW .8 .4 3.2 3.3

NB .1 .1 .1 .3 .4 6.5

NNW .3 .4 .3 .4 4.0

.. ... . . . . . . . . . . . . . . . . ................** .** o*........o.* * . , ** . o o* * o ,. ... ... ..... .. o.o.................. .............*

VAOIABLE I

CALM 31// // ////////// //////////#///// // /// ).1 1////

TOTALS I 23.3 25.9 11.2 5.8 3.5 .5 .6 30O.O 4.2

......*.. o**.....o...... ......... ..... ...., ... ., ... *.. *........,...***........o. .o...o ..................... ....... ....

T3TAL NUMBER OF OBSERATIONS: 910

0

8LOBAL CLIMAIOLOGY BRANCH PLPZENTWGL FRLQUENCY OF OCCURRENCE SF SURFACE wINO 0IRECTION VERSUS aIND'SPEEDusAF E I C FROM HOURLY OBSERVATIONSAIR W' THER SERVICE/MAC

STATION NUMBER: 7Z7855 STATION MARE: FAIRCHILD AFa WA PERIOD OF RECORD: 76-85MONTH: JAN HOURSILSI1: IRUD-2000

.,........... ..o............ ....... °.....,...... o . ...... o . .... o,......•..........., .. ......................o... .. ,I WIND SPEED IN KN01O

UIRECIION I I-I N-b 1-10 l1-lb 1l-2I 22-?l 28-31 34-O NI-7 48-55 6E 5b 10TAL MLRNIOEGRrESI I I WIND

... .... .. . ... . * *. . ... . .. ............. ,...... ........... *. ..... ........ ,......o...... .......... ,o... . . ** . . .

N I * 1.4 .2 * 2.? 4.2

NNE 1.0 4.1 1.1 .6 .2 9.7 S.2

N E 1.9 5.1 2.2 .4 .1 9.7 5.8

ENE 1.7 4.? 2.0 .1 8.8 5.4

L 1.4 1.2 .1 2.9 1.1

ISA SE .2 .5 I.I 6.1

SE .8 .6 .4 .1 1.9 4.8

SSE ..4 .4 .I. 5.2

S 2.0 1.6 .9 .1 4.6 4.5

S5W 2.0 2.5 2.8 1.4 .5 .2 .1 9.6 8.1

SW 2.2 2.1 1.2 1.8 .3 .5 .? 8.5 8.8

WSW 1.1 1.5 .2 .6 .2 1.9 b.1

I 1.7 .9 .6 1 1.1 4 .7

WNW I 1-2 . .1 .3 6.7

Nw .7 I. .

NNW .5 .5 .1 1.2 3.7

.. . ... o... ...... .o...... ........ •......,... ............. .... ...... ............... .... .... ...... o......o.......,.... ....

ARIABLE

CALM 28.6/ ///I/Ij/2// jt/ I ////j // // / /////////I////t 28.6 III

IOALS 21.6 28.5 11.0 5.7 1.4 .9 .3 100.0 4.2

TOTAL NUMBER OF OBSERVATIONS: 910

,,a-

-

UL~b Al, CLIMAIOLOGY BRANCH Pt RINIA61i R 6tUENLY OF OLCU6R NCE OF SURFACE WIND OIRECT ION VERSU5 lN1 SPLEDUSAF IAC FROM HOURLY OBSERVATIONSAlA dEATHR S(RV1CF/MAC

"AION NUMBLR: 127855 5 ION NA.E: FAIRCHILO AfB

WA(P10I1 OF RECOR: 16-45MONTH: JAN HOURSILSTl: 1500-I1OU

..... ,...................................,....... ,.. ...... ,. o . .,,.... .........................,................,......| |N0 SPEED IN 44015

DIRECIION I 1-3 4-b /-lU 11-16 11-21 22-2 28-31 34-40 41-4? 48-55 GE 56 IIAL MEANIOfEIRE I S I A 61N0

.,. . .,.......°..... :;...... .. ..... ; ..................... •.... o..... ...... .................o................... ...............

N I .1 .5 .11.0 4.9

NNE 2.9 5.6 I.? 1.1 .2 11.5 5.8

Nt 1.6 5. 1.2 .2 1 11.4 5.8

INE 2.8 5.8 2.3 .4 9.2 5.2

I Z. 2.6 .5 5.4 4.0

I S .9 .5 .2 .2 1.8 4.6

SF .8 1.2 .1 2.0 3.8

S F 1.6 .8 .1 2.5 3.1

S 1.8 2.8 1.1 .4 6.1 5.1

S5S 1.1 1.8 2.2 1.9 .5 .1 7.b 8.9

s5 I ,1. 2.7 1.5 2.0 .8 .4 8.8 9.2

858 1.3 2.7 .2 .8 .3 .2 5.5 7.0

8 1. 1.1 .8 .1 3.2 5.0

848 .5 .4 .2 1.2 4.4

N4 W. . .5 1.8

NNW .2 .2 4.0

L.RI.BL. I

CII.P I ij//j/Ij j// IjII// / / //iIJI////U/I/I /I//I//I//// iII/I/I/I/dj#111// 2)2.9 I/I/I1

TOTALS I 21.0 31.9 14.3 7.2 1.9 .8 100.0 4.?

II................. ,...... ,........... .. °..... .... o.............,...................... ,,.°.... °°....... ...... ....... .... ...

TOTAL NUMBE.R OF OBSERVATI"ONS: 930

6LOBAL CLIMAIOLOGV BRANCH PtRCENIAGE FREQUENCY Of OCCURRENCL OF SURFACE WIND DIRECTION VERSUS WIND SPEEUUSA FETAC FROM HOURLY OBSERVAIIONSAIR WEATHER SERVICE/MAC

STATION NUMBER: 72785 STAIION NA'IE: FAIRCHILD AFB WA PERIOD OF RECORD: 76-ISMONTH: JAN HOUIRSILSI3: IZUO-1400

.. ..... .. *........ .............. *oo . .o.. . ........ .. °.....,....... ...... ........... .......... .... ........... ..... *.. °

I WIND SPEED IN KNOTSDIRECTION I I 4-b 7-iD 11-16 17-21 22-27 28-33 34-4D 41-47 48-55 GE 56 IOTAL MEANI[RE E S) I a WIND

... . .... ...... ;..... : ..................*........... ....... ...... .. .... ... . ......... .... ..... ............. .........,.

N .4 .3 .9 3.5

NNF 1.7 e.8 Z.2 1.2 .1 8.9 b.3

NE 1.1 5.7 5.6 1.1 .2 34.7 b.4

ENE 2.6 5.2 3.2 .5 11.5 5.6

L 5.3 3.3 .8 7. 4.1

ESE .9 .5 .2 .1 1.7 4.5

SE 1.0 1.0 .1 2.0 3.7

SSE 1.0 1.0 .5 .1 2.6 5.0

S Z.7 1.? 3.4 3.0 b.3 5.7

SSW .8 2.5 2.3 1.8 .4 .4 8.2 9.3

SW I. 3 .9 3.4 2.0 1.1 .5 7.4 11.2

WSW 1.4 3.0 .9 1.2 .3 .2 S.1 8.3

W 1.1 1.4 . . 3 .4 5.8

WN I .4 .4 .2 1.1 4.4

NW .2 .3 .2 .1 .9 6.5

NWW .1 . 3.0

.. ., , .* .... ,........... .... . .*... ........ ........o...,...........................o.... .... ..... ...... ...............VAR IABLE IE

CALM 16.8 1111//Iiid ////jI/ iI//j//iJJ/j/ jj///III//J//UII//I/I//jI////#II llll6l

TORALS I 23.1 21.5 19.4 9.7 2.4 1.2 100.0 5.4

.... •.....° .... ...... ,.....,........ o**,......*.. ,......., ..... ... ..... ,.,.,. *........................... °.... ...... o....


S

GL01A3 CLIMAIOLOGY BRANCH PERCENTAGL FRLQUENCY Of OCCURRENCE OF SURFACE WINO DIRECTION VERSUS dINU PEEDUSAFETAC FROM HOURLY OBSERVATIONSAIR fATHfR SERVICE/MAC

STATION NUMBER: 121855 STATION NAME: FAIRCHILD AFA MA PERIOD OF RECORO: 16-85MONTH: JAN HOURSILSII: 09U0-100

wINO SPEED IN ANOOS

DIRECTION I 3-. -4 1-ID l]-lb IT-?I 24- 28-31 39-NO 41-47 48-55 GE 5b TOTA MEANO[UREE SI I 4 0INO

*. . ... .. * **o *.* ..*.... ;.......: .o o... . . .... * °.. ... .............. * . ..............*.... ............*....... .........

N .... ... .1 1.6 4.3

NNE 2. .6 1.1 .9 .1 9.8 5.1

Al 2.0 b.8 5.1 .9 .1 15.5 6.S

FNE 1.0 5.9 3.4 .5 .1 13.0 5.6

I 3.5 2.8 .S 6.9 3.8

[ST 1.2 .1 1.3 2.3

ST 1.0 .5 .2 °1 1.8 4.4

I 1.0 .8 .3 .1 2.2 4.4

S 2.0 i.1 1.1 1.1 6.1 b.2

SSW I.2 2.0 2.4 2.2 .5 .3 8.6 9.4

SW 1.4 1.1 1.5 I.? .9 .2 6.2 9.4

WSW .3 .6 .3 .4 .2 .1 2.0 9.4

W 1.1 1.0 .3 .3 2.7 5.2

MNM .2 -2 .1 .9 9.2

NW . .1 .2 8.0

NNW ,| .2 . 4 9.0

... . . .. .. . . . ° o.. ..* . . . ° . . ° * * .* . o ~ o . ° . .... .. * * ° o ° . . o . ° ....*...................

RANIABLE I

CALM Ii//ilI/IIIII/IIjj/jjj//j/I/I/j/IIIII/III/I// I 21.2 1///

TOTALS I 2I.0 29.6 18.1 7.6 1.8 .8 100.0 5.0

.... ... .... . ..... ......................................................... ...... ..................... oo,.....o....,,. o....

IOIAL NUMBER OF OSSERVATIONS: 930

a

ULUBAL CLIMAIOLOY BRANCH PLR:[NIAG F HLQULNCY OF OLCURRENC 2F SURFAC IND 0 1RECIION WLRSUS . IN SPEC0USAFLI ' a FROM HOURLY OBSERVATIONS rS AIR WE.T"IR SRVICE/MAC

5I81*O9 NUMBLR: 721895 5181109 NA4(: FAIRCHILO Af[ WA PERIO OF RECORD: 11-89

MONTH: JAN HOUSItSIl): 0600-08ou*. ooo....... ...... .. oo. o... ........ ..... ........ *. . ................... ... ,.. , ........... .. *..o.................. o°.•.

I WIND SPIED IN NOT5DIRECIION I l-3 4-6 1-10 1l-lb 17-21 22-ZI 28-33 34-40 4t-47 48-55 4E 5b TOL ME(ANI DE REIS) % 6INU

oo. .. • ... . .. oo ..... ........ • ..... .... o........o ..... .o.o.........................o................ ......... .....N 2.0 1.2 .1 2.3 3.?

NNE I 2. 3.8 2.9 .5 .1 9.1 5.7

NE 1.9 S.? 3.9 .5 .2 11.8 S.?

ENE 1.9 9.1 2. 0 3.6 9.7

2.9 3.1 .5 6.0 1.9

[SE .5 .s .1 .8 1.9

SF I 5 .5 . .8 4.0

5%f S . 1. . . 1 2. .4 ?

S 1.6 1.7 1.6 .8 .Z 5.9 b.6

SSW 1.9 1.9 3.2 1.6 .9 1 8.8 8.?

5 I .9 1.1 1.2 .8 .6 .2 9.1 9.1

WS¥ W6 .9 .5 .5 .2 2.8 8.8

S1. .5 .2 .2 .1 2.4 5.0

W1 .1 .1 .9 Z.8

NW I .2 .4 4.1

NN W .2 .9 .2 .9 5.0

..... .°oo .. ... ..... ......... ... .....o. ... . .. .o o.. .. ........ ... .o. .... o....°..~... .... ............ °.......

10 1A5 21.2 26.5 lb.? 9.6 2.3 .5 .,30.0 9 .1

........... .. . ...... .......... ................. ... . .. ........ .. ................................ ..


6

GLOBAL CLIMAIOLOGY BRANCH PLRCENIAGE FR12U[NCY OF OCCURRENCE OF SURFALL CIIND UIRELTON V[RSUS WIND SPEEDUSAF IAC FROM HOURLI OBS[RVAIONSAIR WEATHER SERVICE/MAC

STAY ON NUMBER: 727855 "AlION NA4E: FAIRCHILD AF8 WA PERIOD OF RECORD: 76-S

MONTH: JAN HOURSILSI|; 03UD-00U0

°....° .. ...ooooo...oo oo o o . . . ,oo ......... o........... o........,........ ,...° ............... . °oo ............ o.............I WINO SP[ED IN KNOT

OIRLCIION I - 9-6 7-10 11-16 11-21 22-21 28-33 34-40 41-47 8-55 GE Sb TOTAL EAN1OIGQRE(9 I s WIND

... o....... .. ....... . . . =..o..... o ..........o........................... ... .. ....... o.o.o.............o........ . .oo;N I .8 I.= .3 2.0 9.0

NNE 1 .7 1.9 2.0 .1 .1 8.1 S.9

N 3.8 ".5 2.6 .5 .2 12.6 S.S

(NE 2.8 S.6 2.2 .2 10.8 4.9

I 2.0 3.9 .4 9.1 9.0

(SE 1-2 -9 3. 2.9

S[ .3 .2 .2 .3 .9 5.8

SSf .2 .9 . 13.8 S.7

S 1.9 1.9 Z.2 .6 .2 . 7.1 7.0

s I .6 2.6 1.7 1.5 .3 6.8 8.3

Si 3.3 .9 1.9 2.0 .9 .2 .1 b.9 10.0

WSW 1-2 .1 .1 . .2 .2 Z. 8.1

A 1.3 .8 .2 .1 .1 2.3 5.0

WNW .8 .1.9 2.4

NW .5 .3 .1 3.0 3.6

NNW .1 .5 .6 4.3

.... ... ... .................,............ ...... •............ .... ~o......*.................,..... ........... ............ oooVARIABLE I

TOTALS I 20.3 26.3 19.8 6.1 1.6 .6 .1 100.0 9.3

.oo .. ....oo o .. .o . ..... ... o.. .................ooo.o . ........... ........................ o.o.. .............. ooo.. o. ooo.


S

bLO8AL CLIMAIOLOGY BRANCH PERCENTAGE FNLQU(NCY Of OLCURRE NCL uf SURFACE wIND DIRECT]ION VERSUS wIND SPECL

USAF C FROM HOURLY OBSER ATIONSAIR WEATHE:,SERW:CE/M:C

StAr[ON NUMBER: 21855 STATiON NAE: F&IRCHILD AF8 WA PERIOD OF RECORD: 76-85MONTH: JAN HOURSILSTI: JO0O-OOO

ooooo.... . ooo o.... . ......... .. . ....... . .. ° o o . .*..... .o ...... ,.....o... ......... .... .........................J 81145 SPEED TN (NOIS

DIRLCIION I 1-3 4-6 1-10 11-Ib 11-21 22-2? 28-33 34-41 41-41 48-55 GE Sb TOTAL ME(8

IOE6GRE[SI I ,wIND.o .. .. . ...... .oo o o oo o o .° o... o o. .. .... . ..o~,...... .................. o.............................. ° ......... o..8 I 8 I.? .5 1*Q 4*9

NN( 2.2 3.2 2.0 .6 .1 .1 8.1 b.1

NE 1., 4.6 2.0 1.2 .Z 11.1 b.0

ENE 5.8 5.4 1.8 .2 9.? 4.b

1 1.8 1.2 .4 3.4 1.8

ESE .5 .2 .1 .4 3.8

SI .5 .4 .1 .1 .5

SSE .8 1.2 .3 .2 .1 2.6 5.8

2.2 2.9 .4 .5 6.U ..9

SSW 1.2 2.5 2.4 1.4 .9 .2 8.5 9. 1

Sw 1.1 1.1 1.0 2.6 .8 .1 .2 .1 3.1 11.1

Ws I 1.5 .8 .6 .2 .2 1.1 5.4

I 1.5 *S .1 1.9 3.2

WNW .8 .4 .3 1.5 4.1

NW .2 .2 .4 3.0

NNW .4 .2 o1 .8 3.3

.................................... ................................... ...................................VAR1ABLE( I

TOTALS I 21.9 24.6 12.3 1.2 2.3 .6 .2 .1 io3.0 4.8

.. .... .. . .. .....o o .. .......... . o. . .. ....... 0............... o...........oo........o.°.........•.................0. ..

TOTAL NUMBER OF O8SERVArIONS: 930

5l,'fAL CLIM ATOLOGY ' RANCHUSAFI TAC EXTREME VALUESAIR wFATH: R SERVICE/MAC

SURFACE WINOS

7285s FAIPCHILU AF3 A 46-85

lAILY PEAK GUSTS IN KNOTS

MONTH A..YEAAN 'EB MAR APR MA' ..N ,,L AUG SEP OC' NO' DEC MONThS

b 20/ 3427/ 4222/ 4J 6/ 38261/ 3625/ 3620/ 2719/ 3527/ 2623/ 7823/ 28231 33 27/ 4217 231 24.231 2.2 1/ 41.20/ 392 / 2629/ 3024/ 31. 3* 2523/ 21423/ 3223/ 44424/ 38 231 64'(.

7t 2U/ 4022/ 24221 3625/ 3424/ 3116/ 4228/ 3318/ 2426/ 3123/ 2928/ 4422/ 42 281 44710 _ 3/ 20.211 4426/ 2724/ 3124/ 3026/ 33201 32211 3126/ 30.24/ 26 3/ 19?2/ 38 211 '44.9, 201 43 5* 32271 3920/ 38 / !126/ 24201 3424/ 25211 2418/ 6211 3921/ 36 Z0/ 43

81 24/ 23221 38 7/ 3223/ 4825/ 30201 32221 2617/ 24.24/ 3418* 2919/ 50?1/ 38 19t 508i 221 4923/ 3924/ 4022/ 3927* 3118* 19221 3123/ 4627/ Z8201 3121f 31221 444 221 49

8 .231 42.22/ 3523/ 3124/ 26 6/ 2829/ 3024/ 29,'1f 2425/ 3626f 3221 35 %f 29 231 4?84 22/ 3217/ 2524/ 3425/ 3125/ 3225/ 3217/ 3225/ 38221 3521/ 4022/ 3622/ 40 21/ '4P 5 31 14.23/ 38231 28271 46. f/ 33.

MEAN 38.b 3 7.6 38.2 3 7.8' 3 4.8:' 35.1, 32.2. 31.7. 32 .6, 34.1. 37.5. 30.4. 4-5 D I1; 711 7.17048 .834* 5.9 555.7 _83' 7.830 5.470 5.733 4.568 6.811 8.1475.512 4.924

TOTAL OSS Ill'; 1039 184 1138, 1130' 103i7 1115 jI 7 1662* 1090' 1030 1121 13;1521NOTES * (RASED ON LESS THAN FULL MONTHS)

USAF ITAC o.S OLA% (A sFn ON I FS THAN FIJI I MONTH% AND +1110 KNOTSI

GLL "AL C IMATLCOY '-kANCrIUSAF[ TAC EXTREME VALUESA i WEA IiP SEkVICE/MAC VALUE

SURFACE WINUS

7272-i5 FAIPCHILU AF i kA 46-85

oAILY PrAK 'fUTS IN' KNOTS

S4( 0N' T E All

'EAIR ONT.S

4t , WSW 40

4 r SSW 4N.SSW 4USSw ?85SW 4 LS',w*'bSw 3b.S 4SSSw 38SSW 32S 4O'SW 27SW*43 SSW 48,4- SW *14 SW*45SSW 4b SW S' 4S

' 3,S Sh.SSW.4Ssw7t iS 4S TWSW 375W 354 36WSW 36'SW 62Sw 4511 42%SW 4k'SSW 6%4 h2W~ w 53Ilww I5s 40SW 385W 35SSW S4SSE 50SSW 40 SSW 54]

1 5. 4% 41}5w 59NNW '4W',W t'NNW 45SW 49SSW 30WSW 405W 36NSW 4INSW*46 SW 64i

I *I1wS,. 'OSw 41. ,Hsw 40JWNW 36NNW 34WSW 34-NNW 37SSE 266SW*43

Sm 55. !:,WSW 4Swsw ')S. I.w W 39SW 3OSE 35)ISW 43W 30SW 39NSW 46 SW 5514 Sw 4 . 45%W *4SwSW 44S. 4 WSw 47SSW 34WNW 43SSW 3454 48SSW 445W 46 WSW 48

SSW* 'OSw *49S. 067WSW 4,WSW 41WSW 5ISSW*4bSW 33W 3Z.WNW 38.SSW 42,%W 47 SW .b7S w 44SSW '5 ',SW 64, W 4, W''W 4W .w '9SSW*40Sw 3SWSW 4USW 44WSW 495W 45 SSW 64

c17 . ' ',l'dSW 49%W 485SW SbSSw 42WSW 36SSW 3ZWSW 37SSW 35SW 43 W *47 SSW 56S. Ht,5i 49' '9WsW 3,eSw 3:3SSW 29W 31W 39WSW 39SW 34SW 35SSW 39 SW 49,,. 34SSW 31WS.

3 85w s14WSW IbSW 53Sw 33W Z9SW *33 W 396j SSW ?7S. 3ussw 3sWSW 39wSw ibSSw*33f ?bSSW*25SSW*22SSW*355W *36SSW 30 WSW 396i ,:W ' JS w *SSSw 19WSW*3,Nk #24OWSW*$0SSW ;?7WSW*33SSW38*WSW*7SSSW*31WSW*55 WSW*5562 SSW xsNy 28w ?SW 40W 32W 3SSSW*i0SSW*26NN1 3US 34SSW 45SSW*30 SSW 45s3 NL *?EWSW*34SSW 41SW 37WSW '4SW 29WSW 7'8WNW*I8WSW*32SSW 27SW 3%Sw 30_ SW 4164 S. 4bSW 35SSW STSW 3bSW 77LNF 2bSSW 29W 3 4SW 34W 39SSW 32Sw 47 SW 47494149165 S. 4 SW 3NN U i{SSW 3IWSW042N $?8N 2LSSw 2714L 30SSW 375W 3SWSW 34. SW66 S , UW 46SSW 3 6

5SW 2SW 31WSW 29S 29SW 30S 31SSW 345 355E 28 S 50

6? SSW 46SSw 3bS 39S 3SSW 30 'JNw 2bSw *bSw 31SSW 345SW 42S 345W 40. SSW 466h SSW 3bSSW 31w 16SSW '40Sw 43SE 3227/ 39201 302U/ 3423/ 30201 2920/ 43 SW 43

69 231 31470/ 34 5* 2b231 3634/ 28. 3* 2724/ ?925/ 23? St 34. 6* 28.26/ 2322* 26 23/ 3671! 24/ 7h' 3/ 3025/ 30221 320* 2623/ 32221 3423/ 29221 3420/ 2621/ 3822/ 35 221 3871 .21/ 4323/ 4b23/ 52261 41.33/ 3923/ 29 3/ 3522/ 28.34/ 3126/ 35.19/ 380/ 41. 23/ 5272 211 1'22/ 4623/ 4425/ 3926/ 34 2/ 26 21 29221 3026/ 32 6/ 2722* 2123/ 32 211 517< ?0/ 3423/ 27231 3125/ 3524/ 3524/ 3628/ 3124/ 3422/ 28201 3019/ 4122/ 32_ 19f 4174 221 4424/ 3122/ 4124/ 3426/ 2924/ 3123 28 6/ 26 6/ 3123/ 2422/ 3023f 38 221 441

5 22 1 4 626 / 3833/ 3 L2 5/ 2 8 23/ 3 82 9/ 3 4?5 24 8/ 24 7/ 24 211/ 31,19/ 39 47 1 3 7 22 1 6SD

TOTAL 065NOTES * (BASED 0N LFSS THAN FULL MONTHS)

USAF ITAC -O S (OlA)% IRAFn ON I FS THAN Flitl MONIH% &N) +Inn KNnT%)

U S AIR FORCEENVIRONMEINTAL TECHNICALAPPLICATIONS CETER

PART C SURFACE WINDS

Presented in this part are various tabulations of surface winds as followst

.1. Extreme Values - Peak Oust., Derived from daily observations and presented by individual year and =onthfor the entire period of record available. Speeds are presented in knots, while directions are given in16 compass points from the beginning of record through June 1968, and in tens of degrees starting in July1968. The extreme is selected and printed from available peak gusts for each year-month, however anasterisk (*) is printed in the data block if less than 90% (3 or more missing observations) of the peakgusts are available for the month. An ALL MONTHS value is presented when every month of the year hnsvalid observations. Means and standard deviations are also computed when four or more values are presentfor any column. A total raw count of valid observations in presented for esch month nd ALL MONTUS.

NOTE: According to Federal Meteorological Handbook No. 1 specifications (formerly Circular N). "peak gust (data are recorded only at stations with continuous instantaneous wind-speed recorders."

*2. Bivariate percentage frequency tabulations: Derived from hourly observations, these tabulations are apercentage frequency of wind directions to 16 compass points and calm by wind speeds (knots) in incrementsof Beaufort classifications. Percentages are shown by both directions and speed, and in addition the meanwind speed is given for each direction.

A separate category Is provided oh the form for variable winds, which are reported in some data sources.In these data where light and variable winds are reported with no directions but with speeds given, th-speeds will be summarized in the appropriate groups opposite the column headed VRBL.

a. Three tables are prepared for ALL WEATHER surface winds, all years combined, by: (1) Annual - allhours combined, (2) By month - all hours combined, and (3) By month - by standard 3-hour groups.

b. A separate annual table is also presented for surface winds meeting INSTRUMENT CLASS conditions asfollows: Ceiling 200 through 14O0 feet inclusive with visibility equal to or greater than 1/2 mile,and/or visibility 1/2 through 2-1/2 miles inclusive with ceiling equal to or greater than 200 feet.

NOTE: A percentage frequency of ".0" in these tables represents one or more occurrences amounting toles than ".05' percent.

*Values for neans and standard deviations do not Include measurements from incomplete months.

C- 1

GL09AL CLIMATOLOGY 9RANCHUSAFETAC EXTREME VALUESAIR WEATHER SERVICE/MAC

SNOW DEPTH

127855 FAIRCH1I.. AFb WAST.ON NAME 'EAR,

DAILY SNOW DEPTH IN INCHES

MONTH A.AEA )A B AAR APR MA, N JUt AUG SEP OC T NOV DEC

YEAR MP'A

73 4 2 TRACE 0 U 0 0 0 a 0 8 5 "74 I TRACE. TRACE 3 0. 0. 0. 0. 0. 0. 6 6.75 12 24 4 3 J 0 0 0 0 TPACE 3 5 2476 5 2. 1 1 3. 0 0 0 . TRACE 2 S.77 S ITRACE 1) 0 0 0 U 0 5 12 127b 17 12 1. TRACE 0 0 0 0. 0 8 9 1T7v 4 14 TRACE ) 0 0 0 0 U ; 5 7 148, 1- 4 2. 0 0 0 0 0 1 3 1041 3 2 TRACE 0 3 0 0 0 0 0 0 6 6:2 1 3 TRACE 2 0 0 0 . 0 3 10 18,r A 4 0 0 1 0 c 0 o I 1 1 11

34 11 2 TRACE 0 3 0 a 0 0 0 4 13 131R5 12' 2 4 C

MEAN 10.1~5'o; f 2-0 2 ) 0 . .. 0 - .0 .2' 2.4 7.3" 13.6SS D 8.444i 9.65f 2.626* .645 .000 .000 .0a* .000 .00 .830 2.620 5.582. 9.216

OTAL Oss 12 A 8 115 *-IM -1 -2 i6~ t(130 2 12 36 12 7 1 -12 7 I I 3Y, 1271 251 1262 1S0931NOTE ( IBASED ON LESS THAN FULL MONTHS)

USAF ITAC - 0 s5 (O1A)

- .

GLOAL CLIMAIOLOGY BRANCH PLRWLN TAbL RLOUCNCV OF OLCUARENCE OF SURFACE IINJ DIR[CTION VERSUS dINU SPEEDISAF CAC FROM HOIJPLY OBSERVAhON5AIR .EATHER SERYICEIMAC

TATION NUMBER; 721875 STATION NAq|.; FAIRCHILD AFB WA PERIOD OF RECORD: 16-8SMONH: FLO HOURS(LSII; UJUO-0SUd

.... °...o.. oo ........ . o ...... ................ o. o*.o........ ..... ... ..... •........... ......................... °........,.......WIND SPEED IN ANOTS

DIRECIION 1 -3 4-b 7-10 I1-Ib 17-2| 22-21 28-3 34-40 41- N48-55 GEl 5b IIAL MlANII0ELRtEESI x WINO

.... ...°o°......... .... .... ... ........... ....... ..... ... ...... ....... ........ .............. ....... •..... °

. .. 1-2 .8" ?.O 5.

NNE 1.5 1.9 1.9 .2 .1 S.? 5.7

NF 2.6 . 2.2 .2 .4 .2 8.4 l.5

ENE 1.1 5.7 2.5 .5 1.l ,.4

f 1.4 1.B .5 .3 1.8 4 .6

ISE 1.2 .2 .6 2.0 4.b

Sf I .1 1.2 .6 .2 1.1 5 .1

5S 1.2 2.0 1.3 2 .1 4.8 5.8

S 2.4 3.9 2.7 1.6 . 10.1 b.5

SSW 1.5 3.3 4.8 2.8 .2 12.5 8.2

SW 1.4 2.2 1.2 2.2 .5 .8 10.4 9.1

WSW .1 .1 .5 .1 .2 1.6 8.1

w .9 .8 .7 .I 2.6 5.1

WNW .2 .2 2.0

NA .1 .2 .1 .5 4.8

NNW .5 •1 .6 3 .4

• .° o o .* o.. ................... ..........° . .....oo.........o*............°...... ........................ ...... °....... ...

. ARIABLI

TIOALS 20.1 21.6 21.6 8.4 1.8 1.1 100.0 5.3

..... ° ..... .*.°.. °°°... ......... .. .... o *** ....°.....ooo°°.. o.............. .... o...° ......... .°o......*.............. ....

IOTAL NUMBlR OF OBSERVATIONS: 849

- ll lSl l i lm (m I

GLOBALACLIMATOLOGY BRANCH PLWR-EsTAOL FREGUENCY Of OCCURIYENCE OFISURFAC E BIND DIRECTION tER4SUS sIND SP'EEDUSAFETAC FROM HOURLY OBSERVATTONSAIR WEATHER SERBICE/MAC

STATION NUMBER: 727855 STATION NA4E: FAIRCHILD AFS BA PERIOD OF RECO: lb-AS

MONTH: FEB HOURSILSII: UtOO-OnOO

I WIND SPEED TN KNOTSDIRECTION 1 -3 N-6 1-10 21-16 17-21 212-21 28-21 ON-NO %I-N? NB-SS CIE 56 TOTAL MLANIERE (SI I B wINO

N I .7 .2 .9 2.4

NN Z.8 3.2 1.2 .2 .1 7 .4 4 .9

NE I 2.6 N.1 2.9 .5 .N .1 0.1 b.1

ENE I .9 N.? N4.2 .5 11.9 5.9

1. 2.6 2.5 .A S.9 9 .0

ISE .6 .1 .1 &.N 9.5

SE I 9 .6 .6 2.1 %.6

SSF I S5 2.N 1.0 .N .1 3.? 7.2

I 2.0 9.2 N.N 1.5 .1 12.2 6.9

SSW I .1 2.6 5.1 2.9 .2 10.3 1.9

SW I a8 2.1 2.1 2.5 .9 .2 .? 9.9

WSA 1 .2 .6 .7 .6 .1 1.2 6.3

NA I 15 . . 3.9

NNW .5 .5 1.0

CALMK I/I/Ij/I//jII/jI////li/I////I/////tiII/II/// 11.0 /1///

TOTALS I 21.0 21 23.9 9.2 2.9 .6 100.0 9.14

TOTAL NUMBER OF OBSERVATIONS. AN9

uLUBAL CLIMAILOGY BRANCH PEPCENIAGL FRLQUENCY OF OLCURENCE Of.SuRFACE WIND DIRECTION V(RSUS IND SPLDSAIET AC FROM HOURLY OBSERWATIONS

Al' WEATHER SERAICE/MAC

STATION NUMBER: 727855 STATION NAIL: FAIRCHILD AFB WA PERIOD OF RECORD: Tb-ASMONTH: FEB HO URSILSII: 0900-II0U

........ ... .. ... .... ............. .......... ........ ... . . . . ................ ....... .......................... ......| WINO SPEED IN 8N015

DIWECTION I I- 4 4-6 ?-10 Il-lb A1-21 22-2T 28-33 34-40 41-4T 48-55 G[ 5b TOTAL MEANIDE (REESI I wINu

..... •..o ............. ,.............................•.............•......... .,......... ............ ................. .... . . ,.

N .4 .9 .2 l.S 4.5

NNE 1.2 2.2 .7 .4 .1 4.6 5.7

NL I .4 2.9 3.9 .7 .4 .1 TO.4 b.8

(NE I .2 5.9 6.2 1.6 16.0 6.8

1 2.6 3.7 1.2 .2 7.7 4.b

IS[ .b .1 .5 .4 ?.1 b.I

SE .8 .9 .S .2 2.5 5 .3

SSE I 1 . 1.8 .2 .4 3.9 1.8

S I1b - 3.8 4.8 1.8 12.0 T.I

$5 1.1 2.9 6.5 4.0 :1 14.6 A.b

SW I l. 1.6 3.N 9 . 11.1 10.3

WSW .2 .5 .5 .6 .1 1.9 9.1

W .5 . . .1 .1 . 4.4

WNW .2 .2 .S 2.8

NW .5 .1 .6 1.9

NNW

VARIABE

CALM 9 / .1 //1l

TOTALS I 16.0 28.3 30.4 11.8 2.0 .5 100. 6.6

........... •... ,......,,...................,... ...... ............ .. . ,........,......, ............. ,... ...... ........... ..


UIM

uLOEAL CLIMATOLO(Y BRANCH PLR ENIAGL FREQUENCY Of OCCURRENCE Of SURFACE .IND DIRECTION VERSUS WIND SPEED

USAFEAC FROM HOURLY OBSERVATIONSA Ik EATHER SERVICE/MAC

SIATION NUMBER: 727855 STAIION NAME: FAIRCHILD AFA WA PERIOD OF RECORD: 76-85MONTH: FEB HURtLSII| 1200-lA,

........ ......... o oo o oo...... o o oo........... .. o.oo oo..o ............. o.o..... ...... . . . . . . . . . . . . . .

wIND SPEED IN .N0S.

DIRECTION I I-I 9-6 1-iD 11-lb 17-21 22-27 28-3 34-4D 41- 7 48-55 GE 56 iOTAL MEAN(DEGREEs)I I 6 IND

........ •........,.... oz ........ ; o.. .... • . .... o... ooo.........°.............°........... ... .............o......... o o........

N 1 .6 5 .2 1.3 4.1

NNE .1 1.9 1.5 .2 .1 .5 b.4

NE 3.2 2.8 3.4 1 .2 .6 .2 .1 9.S R.N

ENE 2.9 9.2 4.6 .6 .2 12.D b.3

L 2.0 2.6 1.1 .3 .1 5.9 4.9

ES I 1.3 .5 .8 2.4 S.0

SF 1.8 .9 .7 . 3.8 5.0

SSF .8 2.2 1.5 .5 .1 5.2 b.b

S 1.9 4.k 1.3 2.0 11.3 7.1

SSA 1.2 1.9 4.2 4.0 .2 I1.5 9.0

SW .8 2.2 3.8 3.1 1.3 .9 31.8 10.5

WSW .9 8 3.9 2.1 .8 6.6 9.9

W 1.s 1.5 .9 .4 .2 9.6 6.0

WNW .6 .4 .3 3.3 1.8

NW .2 .3 .3 .5 4.5

NNW .I .3 .2 .5

VARIABLE I

CALM 1111.0.111i fot1l l~ 1 .9 ////1/

IOAL5 J J7.8 26.9 28.1 14.7 3.8 .6 .1 1030.0 b.9

|OfAL NUMBER OF OBSERVAIIONS: 849

6LOBAL CLIMATIOLOGY BRANCH PERCENTAGE FREQUENCY OF OCCURRENCE OF SURFACE IND DIRECTION VERSJ5 tINO SPE UUSAFETAC FROM HOURLV OBSERVATIONS

AIR *EATHER SERAICEIMAC

STATION NUMMER: 321855 STATION NAME: FAIRCHILD AFB Wi PERIOD OF RECORD: Tb-dsMONTH: FE HURSIL ST; I 15J1-| 10

........ ..... .............................,.......... .. . . .. . .o ...... o.... ........•..........o........*...............I wINO SPEED IN ANOTS

OIRECION I 1-3 4-6 1-10 l-lb 17-21 22-21 28-33 34-40 NI-4? 48-5s DI Sb IOIAt "LAN

IOE6REEf SI 3 wINU................. * ***.... .. ......... * * * * * * * * * * * * * ........ o...o.o o......o...... •.......... . . . . .. . . . . .. . . . . . ............. .

N I .7 1. .4 2.? 4.4

4NF 1.4 Z. 2.0 .b .1 6.8 b.4

NE I .6 3.8 3.5 1.1 .1 .2 11.0 1.R

ENE 1. 3.1 1.3 . .2 S. b.0

t *Z I.3, .9 4.RI .2 1.8 .

S SE I . .8 .5 , .T

SE I? 1.2 .5 3.1 4.6

5. I 1.6 1.6 1.9 .1 9.3 5.1

S I 1.4 2.7 2.4 1.i -I 7.? 6.e

5 I z.5 1.9 3.1 2.9 .4 .1 10.8 8.N

Si I .1 2.5 4.8 2.5 1.2 .3 13.2 M.R

WSW 1.: 1.9 2.5 1.1 .5 6.6 8.1

4 11 2.2 1.8 .7 .4 6.1 7.2

WNS ,? .1 .5 .3 4.5

NW .9 .1 .1 1.2 3.0

NN I .7 04 11 4.0

VARTABLEI

CALM I j//j/j//#i////jj//j//////j/jj/II j/h///j/ $jjj/Ij///j/////I////I./t/I/2////i#I//.'//tI 12.5 111I1

TOTALS 19.6 21.4 2b.4 10.1 3.4 .6 100.0 6.1

..........................**.... ..... ................ , ............. ... o ........ ..................... ............. .°... .. o°*.


S

ELOUBL CIIAIOLOGY BRANCH PLR8ENTAGL FREQUENCY OF OCCURRENCE OF SURFACE WIND DIRECIION VERSUS .INO SPECSUSAFETAC FROM HOURLY OBSERVATIONS

AI wEATHER SERVICE/MAC

STAIION NUMBER; 721855 STATION NAHE: FAIRCHILD AFB WA PERIOD OF RECORD: 76-85MONtH: FEB HOURSILSII: 1800-20OU

.. . . . . . ...... ............... ............... ................... .... ..... e e e e e ~ s e e~ .$...... ....... .. e.. ...... ..... e..........

I WIND SPEED IN 4NOT5UIRECIION I 1-3 4-b 1-10 11-16 17-21 22-21 28-33 34-0 41-4 NB-55 GE 56 IOTAL MLANAOEGRCES1I |I WIND

o~o o . ... .. ~o. o, ... ... o~o ,. .o o............... ......... .. .......o............ .. ........•......... . . . 2 . .o .I 1.N .9 .1 1.1 6.2

NNE 2.1 3.4 1.8 -b 7.9 0.6

N I 1.9 3.4 2.4 1.3 . . .1 9.7 7.6

ENE 2.2 3.2 1.1 6.5 4.6

L .8 2.5 .N 3.7 4.3

ESE .9 .1 .1 1.2 3.0

SE 1.1 1.1 .1 2.2 3.6

5SF .9 1.2 .6 .1 2.8 4.6

1.5 4.2 2.6 .8 9. b.I

SSB 1.8 3.1 2.8 2.8 .2 .1 10.8 1.8

Sw 1.8 2.5 3.1 2.1 1.2 .1 10.1 8.9

WSW 1.2 I.s 1.1 .5 .N 4.4 6.9

I 1.6 1.2 .1 .6 3.5 4.9

WNW .9 .7 .1 1.6 3.5

NW .N ° 1 .6 5.2

NN .9 .2 .1 1.3 3.4

RARTABEF

CAL" 2 / / D./? III

OVIL% 21.6 29.1 17.0 9.0 2.0 .6 .1 100.0 5.0

IOTAL NUMBER OF OBSERVAIIONS: 849

I

ULOVAL CLIMATIOLOb BRANCH PLERLNIAGE FREQUENCY OF OCCURRENCE OF SURFACE WIND DIRECTION VERSUS WIND SPELL)uSAITAC FROM HOUELY OBSERVATIONSA I .IATHER SERVICE/MAC

STATION NUMBER: 721855 STATION NAIE: FAIRCHILD AFB WA PLRIOD OF RECORD: 76-85MONTH: FEB HOURSILSI): 2100-230U

........ ..o.o . ..... .. . .o ..... *. ...... .ooo ...... .ooo o.... ..... ... .. *.... ....... . o ....... o°*°... .......... o

I BIND SPEED IN 4NOTS

DIRECTION I 1-3 4-6 7-10 li-lb 17-21 ,2-27 Za- 3 3N-NO NI-N N8-5S b TOAL MLANIREGE SI I % BIND

oo~~o ... oo .. o °..~o .. ....... .o..o .. .. o.o.... ... ... ....... ......o.... .. o ... o........•.......o.....................N ..... .. .. 2.2 3.7

NNE 2.7 2.1 2.0 .8 .1 .1 8.5 5.9

NE 1.3 2.4 2.4 .6 .5 7.1 7.1

INE 2.2 3.5 3.1 .1 9.0 5.4

E 2.2 1.6 .2 .1 4.2 3.7

FSE .q .2 .2 .8 N.3

SE 1o. .5 3.5 2.8

SSE I 8 1.8 .0 .2 3.7 5.N

2.1 4.b 1.5 .1 11.5 5.0

SSW 1.8 3.9 4.0 2.2 .5 12. 1.8

SB 1.1 1.5 2.0 2.1 .5 .2 .2 7.9 9.7

WSW 3.1 .8 .9 .6 .2 .1 3.8 7.b

W 1.3 1.2 .2 .1 2.0 4.0

WNA .6 .0 1.b 5.5

Nu o. .1 .5 3.8

NNW .3 .7 .1 .9 N.9

VARIABLE I

CALM Il///I//i/Iu I I/ul/fpJ/llli/i///lj////////j// 21 .6 1// II

TOTALS | 21.1 27.0 19.9 8.0 1.0 .5 .2 100.0 N.9

TO..-LNUM...OO.... ...RV.T.IONS:....44.o...oooo ........ o......o...o....................o..o..

TOTAL NUMBER OF OBSERVATIONS: 8-49

m-imi i m im / i l i

ULObAA CLIMATOLOGY BRANCH PLR:ENIAOE FRLQUENCY OF OCCURRENCE OF SURF AC WINO DIRECTION VERSUS wIND NPEELUSAF tTAC FROM HOURLY OBSERVATION%AIR .E THtR S ERVIC C/MA

SATION NUMBER. 12785, SIATION NA4E: FAIRCHILD AFB WA PERIOD OF RECORD: 76-85MONTH; FEB HOURSILSI|: ALL...... ooo.... °.o. . oo,,o . .. ..... ., ...... ,.o ..... ., .... ...,, . . .. ...,,,,, ... . ..,,.................,.....°,,.....

I WIND SPEED IN NNOT SDIRECIION | 1-5 4-6 1-30 11-16 17-21 d2-27 28-33 3N-NO 41-47 NR-55 E Sb TO3L MEANI O E G R E S ) I

W I N O-.................... ...........°°...... °° ....... .°. . .. °o..... ....... .. o .... °. . ...... . . . . . . . . . . . . .N I .8 .0 .2 .8 4.0

NNE 3.8 2.5 1.6 .4 .3 .0 6.3 5.1

NE 2.0 .1 2.9 .8 .N .2 .0 9.4 7.2

ENE 2.3 4.N 3.2 .5 .1 3O.S S.8

I 1.8 2.2 .7 .1 .0 4.8 4..

ESE I .6 .5 .4 .1 .8 4 .8

SE 1.l .9 .4 .1 2.6 4.7

SSI .9 1.7 1.2 .2 .1 4.3 6.0

S 2.1 N. 3.8 1.3 ° 50.9 6.5SSW 1.6 2.6 4.3 0.2 .3 .0 3.3 8.3

SW 1-3 2.0 3.1 2.6 .D .3 .0 10.3 9.7

WSW .9 .9 1.1 .7 .3 .0 3.9 8.0

1-1 3.2 .5 .3 .3 3.? 5.S

WNW .5 .3 .1 .3 .9 4.1

NW 1. .1 .0 .5 .6

NNW - .-2 • .7 3 .8

.... L .. . . . . ..... °.......... .o .... . ...... .. .. ...... .... .o.o . oo. .... . . . . . . . . . . . . . . . . . . . . . . . .

IOIALS I 9.7 Z7.7 2 3.4 30. 3 2. 3 .6 13 103.0 51

. . . . .. . . . . .................................................

IOTAk NUMBER Or OBSERVATIONS: 6192

SI

LOAL CLIMASOLOGY BRANCH PLR:LNTAGL FRLQUENCY Of OCCURRENCE OF SURFACE 81N0 DIRECTION VLRSUS wINU SPLEUuSAF..,AC FROM HOURLY 0BSCRVATIONUS

AIR , EAIN[R SERVIC /MAC

SA ION NUM ER 12E8/ A STA TON NAME: FAIRCHILD AFB A P R O0 OF RECORD: 16-85MONTH: MAR HOUR1LS: 5050-02[0

. o o, ............................. ...... .... .................. .. o.... .. ...... ..... .. ................................I wIND SPEED IN ANOTS

DIRECIIUN I 3-i 4-6 7-10 lI-lb 17-21 22-27 28-33 34-40 41-47 48-55 GE 5b IIAL MLANIDGREESI I I wIN......... ..... . o. o o..... * o . ..... ......... . . . °° , ,......°......°........ .................. ,o6 S. .. .. .N -. 3.3 .1 1.6 5.3

NNE 2.8 1.1 1.1 1.1 6.? S.8

NE 3.1 1.4 1.4 .4 t.3 3 .

ENE 1 .5 3.1 1.1 .I 5.8 5.z

I 1 .5 1.3 .2 7.0 3..

ISE 1.1 .5 .1 .1 1.A 3.9

SE 1.5 .6 .2 2 .4 1 u

SSE 1.8 .9 .3 .1 1.1 3.8

S .D 3.9 1.8 .2 .1 1G.0 4.8

5SW 3.8 3.9 5.7 1.3 .2 .1 15.0 7.2

SW I 2. 2.2 3.0 .9 .1 8.2 b.8

WSW I .4 1.2 .4 .4 1.4 5.5

8 1.1 1.5 .8 .2 3.5 5.N

NN 1.0 1.6 .2 .1 2.9 4.1

NA .6 .3 .i 3.1 3.

NNW .2 1.0 .i 1.5 4.6

RARIABLE

CALM I/// 2S.8 11jIIj///ii/ j1jiii//iII/I/jj id tI///I/It/I///I/jIII//Iii//I 25.8 Il//I

TOTL5 25.7 25.5 17.5 4.9 .4 ,3 100.0 4.0

.. ... o .°.. °. ... o.....o.....,. . ,*............... ............ ,.°. ... o.,.. ... ....... ... ...............................


S

tLOb. CLIMAIOLOGY BRANCH PLRCENIAGE F LQUENCY QF OCCURRNCE UF SURFACE WIND U]E CTION VERSUS WIND SPEE UUSA I AC FROM HOURLY OBSERNATIONS

AIR IfATHEA SRRIC[/MAC

SIATION NUMBLR: 72855 STATION NAIL: FAIRCHILD AFL WA PERIOD OF RECORD: 76-81

MONTH: MAR HDURS(LSTI: 1UO-0bO5............. i...........................................';.... '.. '...........................................................WIND SPEED IN KNOTS

EIRECIIUN 1 1-3 4-6 7-10 ]1-lb 17-21 22-27 28-33 3N-4O 41-47 N8-55 GE Sb TOTIL MEANIDIURtS) lI aINO

... ... ... . . . ... . °.. ... ... .. ... ,.. ......°o..........,......... ............,........ .... ................................N B .1 1.1 .1 2.1 3.9

NNT 3 .1 1 .7 2.2 .6 .2 1.I 5.b

Nm 2.0 2.0 1.5 .5 b.I 5.4

INI S.2 3.4 1.1 7.7 4.2

1 I .6 1.5 .3 3.2 3.6

1SF I .9 .5 =.1 1.5 3.5

% I 1.2 .1 11 1.6 Z.9

SSE 1.5 1.1 1.1 1.9 5.0

..5 9.2 2.4 10.1 4.7

5W I 1.6 6.0 9.5 1.5 .1 .1 13.9 b.9

SW .5 1.6 3.9 2.? .3 9.0 9.5

WSW .6 .9 .4 .1 2.0 5.4

W:I.9 l.9 .1 3.7 3.9

ANW .5 .6 .1 .1 1.6 5.1

NA .2 .4 .2 .9 4.9

NNW .1 .6 .. .9 9.4

VARIARILF

-*-o-ALS--.-o.-B 23.9- o - .-..I IA. .....6 ..o.o . ... .. 0... *0...0....., .. .*.. ......... .. .... .. , . ....1....

TOTAL NUNBER OF OBSERVATIONS: 910

S

mlm lll ilJi l mmlilml-mmmmmmmmmammw

6LOEAL CLIMAIOLOGY BRANCH PERCENIAGE FREUUENCY OF OCCURRENCE OF SURFACE WIND OIRECIION W(RSU WIND SPEED rUSAF I IAC FROM HOURLY OBSERVATIONS rAIR .EATHER SRRICEMAC

STATION NUMBER: 27A54 STATION NARE: FAIRCHILD AFA WA PERIOD OF RECORD: 76-85MONTH: MAR HOURSILST I: 0600-ObOO

.... ... ... ......, ...., ......,., ..... ,.......... . . . I,, , , = ° , , ,, , ,°, ............... °=.........,.......... . ... ............i rIND S.PEED TN KNOTS

UIRECIION 1 i-3 4-6 7-10 11-16 17-21 22-Z7 2R-33 3N-N0 41-47 48-55 GE 56 TOTAL MEANIDEREESA I I WINO

N ..0 .4 .1 .3 1.9 4.6

NNE I.I I .3 2.2 A.O .4 1.7 A.z

NE 2.0 2.6 1.4 1.2 7.2 5.8

[NE 3.8 5.1 2.9 .2 12.Z 5.0

L 2.2 3.3 1.0 4 .2 4.1

FSF 3.3 .5 .1 1.? 3.4

$. 3.1 3.3 .2 2.8 3.7

SSE i.z 2.1 .4 .3 4.2 4.0

S 2.5 5.6 2.3 .3 J0.6 5.1

5SW I .2 4.9 6.0 2.1 .3 14.5 7.?

Sw . 1 3.5 1.0 1.6 .2 .2 7.4 9. 1

WSW .2 1.0 .8 .8 .1 2.8 8.1

I 1.S 1.0 .1 .1 2.9 4.4

WNW 1 .0 .6 3 .6 S.2

NW .6 .3 1 .0 3. 1

NN .2 .3 .2 .8 S.1

VARIABLEI

CALM I f I I I I / I /j I I i I I / I / I / 11 t I I 1 18.5 IA,5 li/1

TOTALS I 23.2 29.9 2I.4 7.8 .8 .3 100.0 5.0

o.. ,...o................°°°........ °°........... o..°. o°.... ...... ......... o°. ... ... .... °.........°°..°.°...... °°°.....

IOTAL NUMBER OF OBSERVATIONS: 930

S

-~ -r

GLUBAL CLIMAIOLOSY BRANCH PERCINIAGL FARUENCY OF OCCURRENCE Of SURFACE WIND DIRECTION VERSUS WIND SPEED

USAF L C FWUM HOURLY OBSERVATIONSAIR .EAIHER SERVICEIMAC

STATION NUMBER: 727855 STATION NAIL: FAIRCHILD APB WA PER0D OF RECORD: it-A5MONTH: MAR HOURSILSIT: 09U0-1100

..... .... .... ......o,.....,......*..... .......... .... o ~ o . ,o... ..... . ......... °......... ..... oo.o.....o...... ................WIND SPEED IN ANDOS

DIRECTION I 1-3 4-6 1-0 Il-lb 17-2W 22-2l Z8-33 IN-4O 41-Ni 48-55 GE 56 TOTAL MEANIDEC.REESI I wI ND

.. .. • .. , o o~.. °. . .. o........ ; ..... ...... . ......... .......o.......... .. ..o ..... °..................°...............N .. 1.0 .6 .2 .1 .1 2.0 5.I

NNE 1.2 1.8 1.6 1.0 .1 .2 6.2 1.8

NE .3 2.9 3.1 1.b b 8.b A.6

ENE .8 3.5 4.1 1.1 .2 9.7 7.4

L z.1 3.2 1.0 .3 7.2 4.b

EST .6 .8 .6 .N 2.5 b.4

SE 1.5 I.? .4 1.1 4.3

SSE I 1.0 1.7 I. . 4.7 b.I

S I 3. 5.3 3.2 3.3 13.1 5.9

SSW 1.6 5.3 4.? 3.3 .I 15.1 1.7

SW °6 2.2 5.1 3.8 .8 .3 12.7 9.9

WSW .1 1.6 1.8 1.3 4.8 8.b

A .9 .8 .6 .6 .2 3.0 1.4

WNW .2 .2 .5 .1 1.l b.4

NW .3 .l .1 .5 5.0

NNAW . .2 .5 3 .0 5.6

RARIRBLII I

CALM I I,,/iii///i /I I I / i 1 /1.1 1 1 11 111 1 1 1 If I I I i I f 4.6 lI/I/

TOTALS 1 36.3 13.4 Z9.2 1S.1 2.0 .6 100.0 b.9

.... .. . .. o . . . . . ..........o.°.,.o ..... .o o o . .°o .oo .o,°o° ... ..... ° ..... ° .... ..o . ..... .. °o. °°o.. , ........ ,


S

-d -r 1 I IilI l l l lII l l

L.LOE8AL CLIMAIOLOUY BRANCH P-RCENTAGL FREQUENCY OF OCCURRENCL OF SURFACE WINO DIRECTION VERSUS WINO SPLEDUSA$EIAC FROM HOURLY OBSERVATIONS

AIR WEATHER SERVICE/MAC

STATION NUMBER: 1Z7855 STATION NATE: FAIRCHILD AFB

WA PERIOD OF RECORD: 16-85MONTH: MAR HOURSILST: 1200-1400

*....... ... *..°.. ** ..... . . *........*......................*...........*.......... *. o ...... *.................o.......*.......

I WIN0 SPELD IN KNOTS1IllCION I - N-b 7-10 11-1 17-2 22-?? 28-33 3N-ND 41-NI 48-SS QE 56 TOTAL MEAN

EGRE EaSI I I WIND

.. . . . . . . .. o ........ . o . . ......... . , . ................... . ........... .. ................ .. °.... . . .N 1.1 .8 .S .2 2.6 5.0

NNE I6 0 1 . 1 .A .2 .3 4 .1 9 .4

Nf 1.0 2.4 2.6 1.4 .1 .1 7.5 1.1

ENE .6 1.8 1.1 .6 .2 N.6 I.E

E 1.1 1.5 1.0 .4 4.0 L.1

ESE .5 1.1 .3 .2 2.2 5.1

SE 1.3 .3 .1 .7 4.7

SSE o. 1.9 1.5 .1 4.5 6.2

S 1 2.0 3.5 3.4 1.1 10.1 6.4

5SW I .5 3.5 5.1 3.0 .2 .1 IT. 8.1

SW i.1 3.0 6.3 4.2 1.2 .2 16.0 9.1

WSAW 1.6 1.6 3.1 3.0 .3 .2 9.9 9.0

I 1.0 2.6 2.7 2.0 .1 .1 8.5 8.3

WN W .I 1.0 .9 .4 2.6 7 . I

Nu .4 .4 .1 1.0 4.6

NNW o. .2 .2 1 .0 4. 1

o***... ,* . . ., ...... o............ .... .. ...... ......... .....*. .... , . ........ . .. ........ *.*.........................VARIABLEF

TOTALS 15.z Z1.6 30.4 11.8 2.3 1.1 .1 100.0 1.4

.... * .... ****...***..o* *o..**** .** ***..,.o°***. .. o**.°...***..****...,..o .****o°., o..... . .... *o* .*.,..** .*..,**°* ......

IOTAL NUMBER OF OBSERVATIONS. 910

C j ==, m ,,=,, . = .,, l n m m lI

OCCURRENCEOF SURFACE WINODI(CTO ATR US WINO ,PE.[UCLIMRIOLObY BRANCH PERLLNIAGI FREQUENCY OF OCCURRENCE O RC IIRCTION

uSAFLTC FROM HO URL Y OBSERVATIONS

AIR WEATHER SRIEVL/MAC

STATION NUMBER: 727855 SIAIION NAlE: FAIRCHILD AFa WA PERIOD OF RECORD: 76-8MONTH: MAR HOURS(LSII: 1S00-1100

oo ....... o ooo oo,........................................ . Oo .......................,........................................

1ND SPEED IN NOTSDIRECTION I 1-3 4-b 7-1 Il-It b 1-21 22-27 28-33 34-40 N1-R41 48-5S 6E St TOTAL MRA4

IIURf F S I WIND... ... ... .... o .. ... ... .. ... • ... .. ..........oo............................•......................,..................

N I 1. 1.0 .. . 2.6 i.R

NNE 1.3 1.6 2.2 .8 5.8 b.6

hF .6 1.2 1.8 1.7 .3 6.b 9.0

F ME .4 .6 1.5 1.0 .L 3.5 9 .0

t .2 .9 .5 .2 1.8 6. 7

ES-I .1 .1 .3 1.0 6.?

SE .5 .9 .2 1.6 4 .5

SSE 1.1 1.3 1.2 .1 .1 .A 5.9

s 1.9 3.4 1.3 .6 9.2 6.1

S5W 1.1 3. 4.9 1 .2 10.6 1.S

Sw 1.6 3.3 6.0 3.2 .5 .2 14.8 8.7

WSW .4 2.5 5.6 3.3 .1 11.8 8.8

I 2.3 %.8 3.1 Z.8 .4 .1 11.5 7.b

WNW 1.1 1.0 .4 .1 2.6 5.0

NW .4 1.3 .4 .3 z.6 5.3

NNW .6 .4 .2 ..2 4.6

.. .o o o. ... ..........oo..............o. °..........oo... .. .o..............°........ ...... ...... o.. o... ....... o..............VRIABLEI

CALM I /J/21////~li/li/jI/iti/I///Ii~jit~Ii~olI/ tj///I//I///jj/dl1 tI///////////tj//// 8.0 tl/

TOTALS I 14.8 27.7 52.0 IS.3 1.7 .4 100.0 b.9

............ ..... °...........°....... °.. ....... °o ..... °, .oo.. ............. ... o ....... .. oo .... . ..... °... ...... o..... ..

OTAL NUMBER OF OBSERVATIONS: 930

UL6UbAL CLIMAIOLOGY BRANCH PLRLNTAGL FRLEUENCY OF OCCURRENCE OF SuRFACL W IND DIRELIION Sf4523 .INa SPLED

uSAF ETAC FROM

HOURLY Ob[RVATION

AIR .E ATHFR SCR /MAC

STATION NUMBER: 127859 STAION NA4: FAIRCHILD AFB aA PERIOD OF PLLORD: 76-A5MONTH: MAY HoUS(LSII: OYU3-O533J

... ... ... ... . .o.,.. ... ... ... ... ... ... .. ... ... ... ... ... , .. ....................... .... , .......... .. ......... .WINO SP..0 IN KNOTS

UIRECIION I I-3 4-6 -10 11-16 LI-21I Z2-?1 28-33 54-40 41-4N- 4BN-T N-ss 51 S L TOTAL MEAN

IOrGR LtSl I w IND

.. .0 .. 1 .

NNT I.3 2.0 .S .1 N.I 4.4

NF 2.9 1.7 .4 3.1 1.6

371 k 1.6 2.2 .b 6.4 1.6

E I 2.1 2. 1. 5.T

St 3.2 1.2 2.?

SSF 2.1 .9 .. S 3 .2

S I .6 5.7 2.5 .1 12.1 .

5SW 2.6 4.9 8.0 2.2 17.1 7.1

SW 1.2 2.1 1.9 .7.b 6.9

WSW .9 L. 1 1.0 . 1.1 ,1

1.3 1.1 .1 3.1 .9

WNW I . .2 .2 I.1 4.1

NA .7 .2 .4 1.1

NN: .1 .1 33 1.4

AIABLEI

TOTALS I 25.6 25.7 18.0 1.4 100.0 1.7

.... °......... .......... •................*........................•...... .*,.....................,o......,.............*....... ..


S

UAt ClIMAI0LOV BRANCH PLPINTA L FRL QUNCY OF OCCUR8R[NCL OF SURFACE 4SNU DIRlCTION VERSUS .1NU SPL) E

US"fI I AC FROM4 HOURLY OBSERVATIONS r

AI ,[AtHE N V I C/MAC

ATION NUMBER: 1278S9 5 183104 ir: FAIRCHILD AFB yR PERI0D OF RCORD: 18-85MDNTH: MAY HOUR3(LSTI: UO00-02D3

...................•,.........................,..........• .... .. .. ....... ......... .. ......................... ...............5 IND SPEED IN aNOTS

DIRECTION I 1-3 4-b -1O li-kb 11-21 22-27 "8-33 34-4 41-47 48-55 Ur 5b fOi18 MEAN

IDfGREIS I 1 .14D.. ..... .......... ...... :................. o . ..... , ........ ............... ........... , ....................... , °

N i . 1.0 3 2.1 4.2

NNF 1 .5 1.9 .4 1.8 4.1

AE 1 .6 .9 .2 .1 2. 3 .1

ENE 1.9 2.2 4.0 1.3

I 3. 1.0 .2 2. 3.,

FSr . .3 1.b ,.1

SE 1.2 .5 1 .1 2.b

Ssf I . I .3 1.4 9.4

I .2 3.4 2.4 .3 9. 5.0

SSW 2.8 5.0 4.9 1.7 .1 14.6 b.6

SW 2.2 3.1 2.8 .8 8.8 8.1

WSW 2.3 .11 2.1 .2 8.3 S.4

I 2.5 3.1 .8 .3 8.7 4.5

WNW 1.2 1.5 .3 .1 3.2 4.7

NW .2 .5 •1 .9 4 .

NNW .3 .2 .5 2.8

..... ..... ... .... .,............. ... ........o....... ... ...................... .... .....................................

CAE I// //// ///j/I /I///////// ///I I //////IIII/////Ij/////I 27.6 I////

101 LS 28.5 21.4 1 4. 7 3.6 . 100.0 3.b

...... ... ......... ,oo,........o....... ............ , o ... ~~. ,...........o . o .... ............ ..... , ..........................o

TOTAL NUMME.R Of OBSERVATIONS: 916

a

ULObAL CLIMAIOL03 BRANCH PtRtNIAGE FALDUENCY OF OCCURRENCE OF SURFACE WINO DIRECTION VERSUS .IN SPE[Uu S 1 T C FROM HOURLY OBSCRIATIONSA WEATHIR SERWICT/MAC

SWATION NUMBLR: 121855 STATION NAME; FAIRCHILD AFB WA PLROD OF RECORD: 1b-85

MONTH: APR HOURS(LSTI: ALL.o .. * ................,................. .. . .......... ...... ............. . +...........*...........................

I WINO SPEED IN ANOTS

OIRECTION I 1-3 4-6 1-I0 11-l 11-21 22-21 28-33 SN-40 41-4 48-SS Dc 56 TOTAL MEAN10E09Ct52 0 WIND

.°. .. .. ... .... .. o. . .... ... o....... :........,... ....................... ...... .. ..... ............ ............... ...N I .1 .7 .N . 2.9 ,.4

NNE ].2 I.7 1.0 . .1 4.7 b-6

NE .4 .4 2.1 .6 .1 6.7 b.4

CNt 1.6 2.7 2.5 .6 .1 7.5 6.3

t 1.2 1.5 .8 .2 .0 .0 3.A 5.s

SE I .6 .6 .2 .0 .0 2.5 4.5

S I 1.1 .1 .2 .0 2.9 3.6

551 1.0 l.A .5 .1 4.9

2.4 4.1 3.0 .3 .0 9.9 5.6

SSW 2.3 4.8 6.6 1.8 .1 .0 15.7 7.1

%W 1.6 3.3 5.2 3.0 .b .1 13.1 8.5

WSW 1.1 1.1 2.3 2.6 .3 .2 .0 7.2 8.1

I 2.6 1.? 1.6 1.2 .3 .0 6.3 7.5

WNW . .9 .3 .1 .0 .0 l.8 5.6

Nw .3 .3 .2 .0 .0 .9 5.5

NNW S. .4 .2 .0 .2 4.9

.o ~.. ... .. .... *............. ... .... ........ ................. ..* ....... ........ o..........o........,....... ............ •.....

TOTALS I A.8 28.6 Z7.2 10.5 2.8 .4 .0 200.0 6.9

TOTAL NUMBER Of OBSERVATIONS: 12)0

t.

GLObAL CLIM A IOLObY OANCH PWLLNIAbL FRLUUANCY Of OCCURRENCE L F SURFACE IND IR LION V(1SJ IND %Pff DUSAF 11AC FROM HOURLY OBSERVATIONSAl, ,TAIH I 5.8RVIC6/MAC

S AION NUM ER: 727855 STATION NAIE; FAIRCHILD AFR WA PLRIO, OF RLCORD; 16-85MONTH; ApR HOURSILS2I: 22UO-2300

.°.°°°°.......°.....°,o.... .. ,° ........................... .°, ..... .°. °.. o,....° ..... .. ° ......... . ............... °......•.......

| wIN0 SPIEN IN KNOISDIRECIION I - N-b I-1U I2-Ib 17-21 22-21 28-33 34-40 42-47 48-5s GE Sb bOrAL MEANID[EPL(S I ' .2N9

..... ,........... .... . . . .... ...................... ..o.......... ,......,...,.......,.....,..............•....................

N .3 1.2 1.6 4.4

NNE 1.7 1.1 1.0 .3 .1 4.8 5.7

NF 2.4 3.1 2.4 .b 6.6 S.?

[N 2.1 1.8 2.0 .1 5.0 5.7

I .8 .3 .2 1.3 3.5

(S .2 .1 .2 .1 .9 6.0

1 2.0 .2 2.2 2.5

Sot 1.2 .1 .2 2.8 1.6

3.1 3.2 2.4 .2 9.0 5.1

S.0 I 3.4 S.0 1.2 .6 2?.2 5.S

5w 2.6 3.1 1.1 1.8 .2 10.7 6.7

WSM 1.6 2.3 2.8 2.8 .2 8.2 1.2

W 3.1 2.% 2.3 1.0 .1 9.0 5.9

WNW .9 2.3 .2 .2 ?.b 4.8

NW .8 .7 .7 3.1

NNW .7 .8 2.2 0.6

CALM / 23.4 lll//

TOTALS 23.6 27.1 19.2 6.1 .8 .1 IUQ.G 4.S

.°.............,...... ,..... ...... ...... .... ,.,. .. ,...........,, .... ...... O.......,. . ... .......... .... , ............ .....


I

GLOBAL CLIMAIOLOGV BRANCH PLNLENTA6L FRLOUENCY OF OCLURRENCL UF SURIAC[ WIND OILCTION VERSUS sIND SPiEL, rUSAFITAC FROM HOURLY OAS(RVATIONSAIR WEATHER S(RVICIMAC

STATION NUMBER: 12765S STATION NAIL: FAIRCHILD AFA wA PERIOO OF RECORD: 16-8SMONTH: APR HOURSILSTI: IRUO-2L3O

......o oo.... ........ °.. o. o ............. oo°......oo..... .. ......... ° ...... .. °oo °o.......................... °. °o ..... °.....I|ND SPEED IN KNOTS

U|RtCIION I 1-3 4-i 1-D 13-36 17-21 8-7 ZR-TI 3-0 41 4R-S6 GE 56 TOTAL MEAN

I0f(REES ) I WIND

... ... •... , ~ o~°,............. . ;. ° ...... ;...... . ......-°......•........,.... ....... ~o............°.......•....................I. I 4 1.4 51 . . .3

NNF 1.1 2.7 1.6 .4 .3 b.1 b.8

NE .3 2.1 2.2 .2 .2 5.1 1.0

INC .6 .7 1.6 .4 4.9 5.8

1 .N .9 .6 .3 .. 23 7.I

S I .7 .3 1.0 z.1

F I .9 .2 1.1 1.9

SS3 I.N .1 .2 .2 2.3 4.4

S I .6 1.1 1.3 .2 9.2 4..3

SSW S.0 3.6 2.9 .8 12.2 5.1

S W 2.8 5.4 3.2 .A 3 13 3.6 b.S

WSW .'.4 2.4 2.9 1.9 .Z 9.9 1.I

I 2.5 2.N 1.7 1.0 .6 °1 8.6 6.7

STI .6 .9 .3 .2 2.0 s.b

NW .6 .4 .3 .1 l.9 6.2

NNW .7 .3 .6 3.6 5.3

VARIABLE I

CALM I/Ii/i//it//I2/2//2///iII76lii/I~/2i/2///iIi~/ l.1 1///

TOTALS I 25.2 29.8 19.4 1.4 1.9 .3 300.0 4.9

II TOTAL NUMBER OF OBSERVATIONS: 93a

_ !-

GLOBAL CLIMATOLOGY BRANCH PERCENIAGE FREQUENCY OF OCCURRENCE OF SURFACE WIND DIRECTION VERSUS wING SPEEDUSAFLTAC FROM HOURLY ORSERVATIONS

AIR WEATHER SERVICEIMAC

STATION NUMBER: 727855 STATION NATE: FAIRCHILD AFA WA PERIOD OF RECORD: 76-8MONTH: APR HOuRSILSII: 1S00-1703

.... ... oooooooo. o......o=.... oo................. ....... o....... .............. ..... ..... .. ... oo....... o....... o ...... oo.o

I WINO SPEEO IN KNOTSDIRECIION I 1-3 N-b -10 IIb 11-21 22-27 28-33 3N-4O -1 48-55 GC 56 TOTAL MEANIDESREESI I % WIND

..... o .. o . ooo. ... ;.o..... o° . . . .. ...... ;...°. .... °....... ..... ..........°.......o.......°...................°..............

N °- .5 1.0 -t 2.3 b.0

NNE .7 1.3 1.4 1.1 .1 4.7 R.2

NF .7 1.2 2.1 .4 .1 4.6 1.2

ENE .o. 1.0 I.0 .9 3 .3 8 1.

I .9 1.2 1.0 .2 .2 .1 3.7 1.4

1S .8 .1 .3 -1 1.6 N.N

SI .7 . .1 3.0

S! .6 .7 .6 I.8 5.3

S2.1 2.9 2.3 .7 .1 8.1 b.0

SSW 1.8 4.9 7.1 2.7 .3 .1 16.9 7.9

SW I 1.4 4.5 5.4 4.2 .9 16.3 B.?

WSW 1.3 2.9 4.2 2.8 1.0 .6 12.8 9.7

1 .9 2.2 0.6 3.3 .8 .2 11.6 9.6

SNW 1.0 1.4 .9 .1 .1 .1 1.2 b.Y

NW .6 .4 .2 1.? 1.6

NNW .3 .2 .8 .2 1.6 7.4

• . ...oo° ..ooo .... o.o.. .. .. o. . . ....... ...............o...o~ o o .. , ,.... ....... ...... .. .. ...........,.......*.....BARILBEE I

CALM I// Ii////j/I///I/j////j/////j/////j///////j//j 5.3 ///1

TOTALS I 14.9 26.2 11.8 11.0 1.7 1.1 1UO.O 7.6

TOTAL NUMBER OF OBSERVATIONS: 9)0

0

-~ a

6LOBAL CLIMATOLOJY BRANCH PERLNIAGE FREQUENCY OF OCCURRENCE OF SURFACE WIND DIRECTION VERSUS WINO SPEEDUSAFETAC FROM HOURLY OBSERVATIONSAIR WEATHER SERVICEIMAC

SIATION NUMBER: 727855 STATION NAVE: FAIRCHILD AFB WA PERIOD OF RECORD: 16-85MONTH: APR HOURSILSI): 1200-1400

... ,.... . .............. . oo .................... ............. ............ .......... , ........ *............... ,,o*.........

I WINO SPEED IN ANOTSDIRECI|ON 1 1-3 N-b 1-10 11-16 11-21 22-27 28-33 34-NU 41-41 NA-5 IE 56 TOTAL MEANEDE GRLES I I I1ND

............ °. . o= o. ...... ..... ...... =. .. ................... ..... **................ ... .. .= =........,.... .............N .8 1.1 .4 .3 2.1 6.1

NNE I . .4 1.0 1 .0 .3 3.8 8.6

NE .7 3.7 2.2 3.0 .1 5.7 7.?

ENE I 1.0 1. 1.8 .A .N S.1 T-b

E 1 .3 2.0 .1 .1 4.l 4.6

ISE .2 1.3 .6 .1 2.2 6.0

SE .9 .9 .4 .3 2.3 4.8

SSF .6 .9 .6 .2 2.2 5.9

S 1.3 3.1 4.6 .3 .1 9.6 7.0

SSW 1.7 3.1 7.9 2.8 .2 15.? 8.2

SW .7 3.0 8.0 S. 1.2 .2 18.6 10.1

WSW 1.3 1.6 3.1 13 .9 .2 .1 10.3 33.4

W 3.3 2.2 2.0 2.8 .7 8.4 8.9

WNW .3 .8 .2 .4 1.8 6.9

NW .2 .4 .8 1 .4 6. 1

NNW f .6 .4 .2 3 .2 4.6

VARTIBLE I1

3818LS I 33.2 24.1 31.4 18.3 8.0 . .1 10o. 3.8

•..o........ °.....,......... ......... o. °...°°....°°o........ ....... o...,,.... ,...... ... °....... .... ............ ...


I

108AL CLIMAIOLOGY BRANCH PERCENTAGE FREQUENCY OF OCCURRENC[ OF SURF ACE IND DIRECTLON VERSUS W IN SPEEDUSAF L C FROM HOURLY OBSERVATIONSAIR WEAiHER 5ERVIC[iMAC

STATION NUMBER: 121855 STATION NA4E: FAIRCHILD AFB WA PERIOD OF RECORD: 6-85MONTH. APR HOURS(LSTI: D9UO-IO0

I WIND SPEED IN KNOTS

DIRECTION I 1-3 4-b 1-10 l-1b 11-21 22-21 28-3 34-40 41-47 48-55 6E 5b 1OTAL MLA4IOEUREESI I A WINO

oo o~o~o . .. oo .. o..... o ...... ;.... ooo ... o.ooooo.... ...... ........................... ...ooo................ oooooooooo

N I .4 .1 .8 . 8.b 7.2

NN( .1 1.8 .6 .6 3.b 6.2

f! 1.2 2.4 Z.7 1.9 .3 8.6 1.9

ENE .9 1.8 4.1 1.9 .1 9.1 8.4

1 1.0 2.9 2.4 .3 6.7 6.1

ESE 3.2 1.1 .4 .1 2.9 5.0

sE 1.2 1.8 .7 3.7 4.8

SSF .41 Z. 1 1.6 .40 4. 6 6.?

s 1.4 3.4 4.6 .1 10.1 b.7

SS W9 3.2 8.8 2.6 .1 14.9 8.3

SW 1.0 3.1 1.9 5.0 1.1 .2 18.3 9.8

WSW .4 1.0 1.0 I.3 . 3 6.2 9.6

S.4 .7 1.4 .9 .1 3.6 8.1

WNW o6 .3 .2 .2 1.3 5.4

NW .2 .1 .3 .4 3.8

NNW .1 .3 .4 3.8

VARIABLE I

TOTALS I IZ.2 2b.2 19.1 16.0 1.9 .1 300.0 7.5

TOAL NUMBER Of OBSERVATIONS: 930

S

GLOBAL CLIMATOLOGY BRANCH PLRCENOAGL FREQUENCY OF OCCURR ENCE OF SuHFACL WIND DIRECTION VERSUS t|ND SPLI

USA FL T AC FROM HOURLY OBSERVATIONS

AIR .ATHIR SERVICE/MAC

SAtION NUBERA: 121855 STAI|ON NA4E: FAIRCHILD AFB WA PE RlOD OF RECORD: If.,-85MONIH: APR HOURS(LSII: b0L1o-udoj

.... •................... ooo. o..o.. oo . ......... oooooo. .... ooo .......... ooooo .o .... oo oo oo..................... .. o ......

I wIND SPEED IN ,NOTS

DIRECIION I -3 4-6 7-10 11-16 11-21 22-2? 28-33 34-40 41-41 48-55 bE 5b TOTAL MLAN

IOEGREESI I WINDooo o . ... .. ... ooo oo ~o.... . o oo .o............O o..... .......... ........ .................... o .. .................. .....

N . . .. 6 o.4

NNE .8 1., 1.0 .7 .1 6.0 b.8

N[ 1.9 3.1 3.9 .7 .1 9.1 b.S

ENE 2-4 5.4 4.3 .9 .1 1 . . s

1 2.6 Z.9 1.2 6.7 4.3

ESE .8 .4 1. 3 .1

S .i 1.1 2.2 3.13

SS 1 1.6 .8 .1 3.8 4.5

S 2.4 1.6 3.1 .1 13.8 6.4

5S I,3.4 5.8 8.3 2.7 .1 18.3 7.6

%W .8 2.1 4.9 2.4 .1 .1 11.0 9.2

WSWy .4 1. . .4 .9 .3 3 .2 8. 7

I .4 .6 .3 .2 .1 1.7 6.5

W14W .4 .4 5.0

NA I .3 .I .1 .6 6.2

NNW .4 .2 .1 .1 .9 6.4

VARIABLE I

CAM j/jj // ////#/I/////i ///#/I/I////i////"/// /// //IdI//#I// 7.8 /////1

TOTALS 17.9 34.4 29.3 8.8 1.7 .1 100.0 b.0

IOTAL NUMBER Of OBSERVATIONS: 930

a

,U

I

OUBAL CLIMATOL061 BRANCH PERCEINTAGE FREQU[NCY Of OCCURRENCE (if SURFAICE WIND DIRECTION VERSUS WINE) SPELL,

USAEA C FROM HURLY US$ERVTIONSAIR AEUHER SERAICLIMAC

STATION NUMBER : 7206.A STATION NAIL. FAIRCHILD AFB WA PERIOD, OF RECORD: 7b-A5

MNTH: APR HOURSILS73: 0300-000

I W INO SPEED IN AR0ISDIR[CION I 13 4-6 7-10 11I1b 17-23 2 2-27 28 - 3 34-40 R1-47 48-55 GE Sb TOTAL MEANloEL.REES) I I WIND

N .9 .9 .2 1I.E 4.0

NNE I 2.2 3.8 .2 13.1 S. 5 .1

Alf I 3.7 3 .9 .9 8 .0 1. 9

ENE 4 .1 R.? 2.1 .1 11.3 R.7

ISE I 8 .2 1 1. 1 2.8

SE 1 3.0 .7 13 1.8 3.9

SF 1 .1 .9 .3 2.1 R.0

S 1 3.9 9.9 1. 1 9.9 5.2

SSW I .7 1.4 8.9 .9 18.9 b.8

*SR .9 1.9 5.3 1.9 .1 .2 30.1 8.9

WSW I 9 . 7 .6 .2 2.6 8.8

w .9 .7 1 2.1 9.9

WNW I .2 .0 .4 .1 3.6 5.7

98 I .2 .2 .9 9.0

NNW .311 .7 3 3. 9.3

VARIABLE I

TOTALS I 23.7 50.0 213.1 9. .9 9 30.0 9.6

TOTAL NUMBER Of OBSERVATIONS: 930

bLOBAL CLIMATOLOGY BRANCH PLRCENTAGE FREQUENCY OF OCCURRENCE OF SURFACE WIND DIRICTION VERSUS wIND SPEED

USAFLTAC FROM HOURLY OBSERVATIONS


TATION NUMBER: 72Y855 STATION NI9E: FAIRCHILD AFB -WA PERIOD OF RECORD: 7b-85

MONTH: APR HOURSILSII: ODUO-0200. . . . . . . . ...............,...........oo °...........,. °° o. .... ,° ..... i ....... ......... , .......... ...................... °.oo

I WIND SPEED IN VNOTSDIRECTION I 1-3 4-6 7-1o Il-lb 17-21 22-27 28-3 S4-40 41-47 4A-55 GE Sb TOTAL MEANIDEGREESI I W AIND

.,.............. ,... .......... °,.... ................... .... , ........... .. ..... ... o, ....... .o........•........... ,... ....... o.

N ..6 .2 .. .0 N.7

NNE I.7 2.1 1.2 .4 .1 5.6 S.R

NE T.2 2.3 1.4 .1 5.1 5.2

(NE 2.1 3.6 1.9 .2 Y.R 5.I

E 1.3 1.0 .1 2.? 3.8

(SE .4 .3 .1 .9 3.4

SE 1.7 .N 2.1 2.5

SS E 1.4 1.2 1 2.8 0.2

S 2.7 4.3 2.3 9.3 S.0

SSW 2.% 5.7 6.8 1.8 -1 16.8 6.9

SW 2.0 3.0 N.1 1.4 .3 .1 13.3 1.6

WSW .9 1.3 1.0 .6 .1 3.9 7.0

I 1.8 2.6 .7 .4 .2 5.T 5.5

WNW .2 .9 .2 1.3 4.9

NW .2 -b .1 .9 4.4

NNW .2 ,Y .2 I.b 4.2

.. ....... ° .. o.,oo* .... ,.°°... ........... o.. o. .... ,..°...°.,.,...,°°...o.. ........ °,,.o°..... °°.......*, .... ........ooo.....

VARIABLE

CALM :ii/ii/I/ii/////// I/I///iii/Iiu/ /ii///////////iii/i//ii/i/iiii,.'////i 20.7 I/I//I

TOTALS I 21.8 30.6 20.8 5.2 .8 .2 100.0 4.6

..... •.° ..°...... ..°° .......° ......° ....°--° .° ...................° ............° .............° ...* ........° ..... ° ..............


I

ULObAL CLIMAiOLOGY BRANCH PERCENTAGE FRLEUINCY OF OCCURRENCE OF SURFACE RIND DIRECIION VIRSUS .IN& SPI UUSAfEIAC FROM HOURLY OBSERVATIONS

AIR S.LATHER SERVICE/MAC

SIIION NUMBER: 121855 STATION NAME: FAIRCHILD AFB WA PERIOD OF RELCORD: lb ,sMONTH: MAR OURS(ILSI1: ALL

.................. **o... .............. •............. ,,. ,** .... ...... o.,. , ............. . ....... ............................IND SPEED IN ANOIS

DIRECIXON 1-3 4-b 1-10 IL-lb 17-21 22 -2 2a-33 3N-40 NUN? -0 7 8-SSE b I1OL EA1

IOfGRE E SI I N11Z,

N ..... . , , .. .... 9 ..... * . ....... .... ... . ....... 0**....*...... ...... . . , ............. •............. * * *,........N I .9 .9 .3 .1 .0 2.2 .T

NNE 1.5 .6 .8 .8 .1 .1 5.9 b.8

NE 1 3.2 l. 1.9 .9 .1 .0 . 7.0

fEN! 1.5 2.5 1.9 .5 .1 b.. t.I

k 1 1.4 1.4 .5 .1 3~ . .6

ESE I 7 .6 .2 .1 3 .6 .7

S zI1. .9 .2 .0 2.3 3.R

SSE 1 .5 1.4 .9 .1 .0 3.v 4.9

S 3.2 4.1 2.5 .5 .0 I.2 5.3

SSW 1 .8 N.1 N.A l. .1 71 . 1.3 7.2

SW 1.4 2.7 4.3 2.1 .4 .1 11.2 8.5

WSW I .0 1.7 3.9 1.2 .1 .0 6.0 1.5

1 I 3.7 2.2 1.2 .9 .1 .0 .0 6.? 6.3

WN w .7 .9 .N .1 .0 2.1 5.2

NW .4 .5 .3 .1 1.3 4.7

NNW .5 .5 .2 1.2 4.4

.. ..... .... *.. ... * * . . . . .o. . * * * . . . * * * * * * * . o . * . = * * * * . * * *o * . * . . . * * . . .* o , *

VARIABLE

CALM / i/ jjji/ j16.9 /ll/1

TOTALS 20.6 28.5 23.1 9.5 1.3 .3 .0 300.0 5.1

. . .. o . . . . .. . . . . . .. .* . . . . . •... .. . . . . .. . . . .. . . . .* . . . . o. . . . . .. *.. . . . . . . . .. . . . .. . . . . . . . . . . . . . . .. . . .. . . .. . . . .. . . . . . . ..


I~mmgm lglIi II m

~JuAl CLIMATOLOUVY 1RANCH PLIALENIAGE FRLEUUENCY OF OCCURRECEOF SUFC INDSOIRECTION VERSUS W.IND SPEEUUSAFUTAC FRM HOURLY SRCVATIONSAIR AIT?.w SERVICli/MAC

S181104 NUMBER: 121855 STATION NAIE; FAIRCHILD AF8 WA PERIOD OF RECORD: 76-VS

MONTH : M ARA HOURSILSTS; ZIUG-213

I1N0 SPEED IN KNOTSU IRE C I IN 4-6- N- I-ID Il-lb 11-21 22-27 28a-3S 34N-4U 4I-4? N.8-55 A Sb TOTAL MLAS440FGR ESI WINDlS

N .4 1.0 .4 1l.A 4.9

NNE .9 1.0 1.A .3 N .Y b.A8

NF . 1.1 1.9 .2 5.s 1.1

ENE I .9 1.5 1.6 .2 4 .2 b.0a

L 1.3 1.0 .1 .1 2.5 1.9

ESE I .1 .3 .4 3 .A

SE I .4 .5 2.0 2.8

SSE I 1.8 1.4 .4 3.7 3.8

s I 4.1 1.2 1.4 .1 9.4 4.4

SSW 2.6 6.4 4.S .A .1 14.% b.1

SA 2.5 3. 1 2.4 1 .1 .1 9.1 6.3I

ASW 1.4 1.5 1.4 .S 5.1 6.0

I .0 21.0 .9 .9 6.8 N.A

WNW a . .9 .4 2.0 4.-4

NA I 2 .8 1 .0 4 .?

NNW 1 .3 .8 .4 2.5 M.D

CALM I I~/Ii/I//I/i/i~/I~jIjU/jjII///I/~/jjj~~//// 27.6 ///111

TOTALS I 23.13 26.4 18.0 4.4 .2 100.0 3 .9


GLOBAL CLIMATOLOGY BRANCH PLR.NTAGL FLQUENCY Of OLCURI[NCE OF SURFACE WINE) DIRTLtION ¥V[SUS WIND SPEEDUSAFEIAC FROM HOURLY OBS(RVATIONSAIR [EATHER SERVICE/MAC

SIATION NUMMER; 721855 STATION NAME. FAIRCHILO AFB WA PLROU OF RECORD: 1b-bSMONTH; MAR HOuRS(LS3;: 1800-2Jt0G

...... •........ ..-. . ... .... .... . .-. ......... ....... °°.......o.......... ..... ....... o..................... ............I IND SPEEO IN KNOTS

DIRECrION | i-3 4-6 1-10 I|-3b 11-21 22-27 28-S3 -40 41-47 N8-55 ut 56 lufal MLA%(OGREESI I IND.° .... ........ .°° ° ..... .° ... ... ;................. . . . .... ........................ °.........................

N 1-.2 1.2 .2 .4 2.? .?

NNE 132 3.5 1.4 .0 b.5 S.

NE .2 .8 3.5 *3 2.8 1.8

[NE .6 .9 3.7 .5 3.A 1.3

L .9 .9 .2 3 .9 4 .()

ESE .6 13 .. I .6 4.i

SE I .3 .8 .2 2.0 3.6

SSE 2.9 .4 .2 0.5 2.8

S 3.7 3.5 1.7 -1 9.01 4.b

5SW 3.2 4.0 3.3 1.3 .2 11.8 6.3

SW 2.8 4.5 4.2 .6 .3 .1 12.6 6.5

WSW 2.4 .8 1.3 .3 .2 8.0 5.1

2.7 2.8 1.3 .5 7.0 4.8

WNW .4 1.6 .1 .3 .1 2.6 6.3

NW .5 .5 .3 1 .2 3.5

NNW .5 .6 1 .2 0.5

• o.° °,.°. . ,.............°................. .... ~........ ... .... ° ° .. ..................... °.°.............. ..........VARIZARLE I

CALM |: / / 21.3 //////

TOTALS I 24.9 30.9 37.4 4.5 .9 .3 IUO. 4.1

. . .... ..... ....... ........... ... .. .. ... ... ..... .... .. .. .............................. . . . . . .

T01AL NUMBtR OF OBSERVATIONS: 930

.,I-

bLUbAL CLIMAIOLOGT BRANCH PIRLINIAGE fRL ULNCV OF OLCURNENCL OF URFACI WIND DIRICTI1N WERSUS wIU SPEEDUSAF k IAC FROM HOURLY OBSRVATIONSAIR W tATHER NFRVICE/MAC

STATION NUMBIR: 721855 STATION NAqY: FAIRCHILD AFB

WA PERIOD OF RECORD: lb-8SMONTH: MAY HOURS(LSI} jbJD-O.3

.. . . .. . . .. . . . .. ,. .. . . .. . . . .. . . .. . ., o.. . .. . . .. . . . .. .. . ............... . . .. . .I W1N0 SPETED TN 99015

DIRECTION I 1-3 4-6 7-10 1l-16 11-21 22-21 28-51 34-40 41-4T 8-55 UC 5b TOTAL MEANID EGREIS) I I W RIND

............. .,................................ .. .......... .... ...... .............. ,.......................... . . . . .

N .4 .2 .0 0.7

N N E . 9 1 .0 3 . 5 3 . 7 b . 0

NY 1.1 2.2 1.9 .3 .1 5.8 1.2

ENE 2.4 1.5 2.5 .2 9.b 5.0

1 2.0 3.9 1.5 .1 0.0 4.8

USE .2 1.1 . ?.b 9.2

S I .6 I.2 .2 3.0 . 3

SSE 1.6 3.1 .8 5.5 9.6

s 4,7 6.9 4.6 *6 16.9 0.9

SSW 1.6 6.8 9.8 2.8 .1 .1 . 7.6

s W .8 2.0 9.8 3.0 .1 11.2 8.0

WSW .3 8 .6 .8 2.5 8.0

. 4. .8 .4 1.6 .9

8NW .1 ,I .I .1 9.7

NW .I .1 .2 0.0

NNW ,I .1 .1 .1 .9 0.5

..... ... o. .......... ....... ......... o.. ..,.....°.................... ........ ..... .......... °... .... ....... ,..... .......RARIABLEF

CALM .......... 7.4 Il/l/ll

TOIALS 19.0 35.3 29. 8.5 .3 .1 100.0 5.8

...... o............. . ........ °.....*°.......................o=...... ,.................... °...= ...... °..... o°.... ......


I

ULOkA L CLIMAIOLOGY BRANCH PLRCEN IAGL FREQUENCY OF OCCURRLNCL OF SURFACE wINU bIRECTION ER(RSU I[IND SPL .UUSAFETAC FROM HOURLY OBSERvAT]ONSAIR I[ATHER SERVICE/MAC

STATION NUMBLR: 721855 STATION NATE: FAIRCHILD AFB A PLRiOD Of RECORD: 1Tb-asMONTH: MAY HOURSILSII: J9ZJ3-II(1Q

............ o . o ....... ooo...........o.................. o .oo . oo.. ...... o.... ...... •..........*..............................

SrIND SPEED IN KNOTSDIRECTION I 1-3 4-6 7-10 I1-lb 11-2,1 22-27 2R- 3 -3 34_4D I1-47 48-55 UE 5b ITAL MLA4IDEGRES ) I 6 RIND

,,. ,oo o ... .. ... , . ... .o ,,, ,, . . ....... o . ...oo ........ ,.. oo... o................. .. .....o,......... *..... ,.... . .

N I -1 . .S .7 4.4

NNE I .8 1.1 .8 .4 3.0 f. .

NF I . 1.6 2.3 .9 6.3 7.2

(NE .5 2.7 1.7 .5 .1 .1 5.9 1T.

t 1.2 1.8 1.5 .2 4.7 6.5

Es .9 1.9 .2 .2 3.2 4.7

SE 1.0 1.0 .3 2.1 4.2

SSF 1.1 1.9 .8 .1 3.9 5.2

s 2.9 6.6 4.8 .1 .1 14.6 5.1

5W8 2.0 4.S 7.1 4.2 .1 18.0 8.1

SW I .1 3.4 7.5 6.3 .3 18. 9.3

WSW . 1 1.1 2.7 2.9 .4 7.5 10.I

A 1.0 1.0 .5 1.1 3.s 1.1

WNW I .2 .5 .5 1. 3 6.8

NW .14 .3 .8 b.6

NNW .3 .1 .1 .1 .9 60

o-,o oo.o... o. . °o. o ..................... .. .... *-.........•.....•..... .o* ...... • .... o .. °.... ................... .. o.

VARIABLE I

CALM IiI/ti iIII/iiiiiiiii iii///iiiiiiiI/I ti//////II/I//iii/2///#i#/flhi///i//ii/iitt iii/ii N.Y Iiiiii

ITALS I 14.b 30.0 31.9 17.3 1.3 .1 100.0 7.0

.. . . . . . . . ......................o.o.o.ooo............ooo....ooo...... o o o o . .......... ............. o .. oo... ....... °.........


B

- lld-~ail ml am nm, nnl i

naIm mmimmm

510681 LC148840L18 88ANCHI PERCENTAGE FRL JUENCY Of OLCURRENCE OF URAC( 8140 OI8ECIION VERSUS WIND SPEEDUSAF ETAC FROM NOURL9 ORFRAWINSAIR wf-THE SERVIC /mAC

STATION NUMBER: 1218553 STATION NAiE. FAIRCH-ILD AFB WA PERIOU Of RECORD: 76-85MONlHz MAY HOURSILSII: 12110-1400

.4440 SPEED0 IN KNOTS0 IRE C IION I 1-3 4 -t, 7-10 41-46 1-1 2 2-21 2 8-33 304-40U 41497 48-553 GE 5.6 TOTAL MEANlD[6RE(S) t 1 IND4

N .. .. .... .;. . .. 8 . . .: . . : .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.7? . . 5.1

NNE! I .2 .9 1.5. .3 3.9 b.0

NF .6 1.41 1.2 .5. .1 1.6 7.13

ENE 1 .0 .8 .4 1.0 31 7.?

L 1 .7 1 .1 .1 .3 3.2 4.

ESE I .4 .5 .2 .1 1.31 5. 3

SE 1-43 4.0 .4 .1 2.8 4.?

SSE1 1.0 .6 .A .2 2.. S. 3

S. l 4. 4.4 3.4 .3.1 14.3. 6.4

SSW4 1.3. 5.0 5.9 3.8 46.4 41.0

SW I .1 4.3 1.3 5.3 .8 18.? 9.0

WSW4 .9 2 .? 3.8 3.6 .4 14 .0 9.?

44 I 1.0 4.9 2.8 2.3 .8 8.7 9.1

WNW8 I 8 .6 .5. .2 . 2. .

mw. 1 . .8 .5. .2 1.8 6.?

NN8 W .4 .4 .2 .2 14.3 6.41

VARIABLEI

CALM l/I/1j1IU/I/I/Ijj~//Ij/I/,/,jI////,/j,/,//Id 6.2 11/

TOTALS IS4.8 2b.8 29.4 19.6 2.2 100.0 1.2


bLAR CIMAIOLOY BRAONCH PLP [NT AGE FREIQUE NCY OF OCCURRENCE OF SURF ALE WiIND DIRECLT ION VERSUS I.Nb SPEEDUSI[A FROM HO U RLI OBSERVATIONS

AIR T1HEP SERVICE/4MAC

STATION NUMBER : 727855 STATION NA4E: FAIRCHILD AFB WA PERIOD 0f RECORD: 76-OSMONTH: MAY HOURSILS11: ISUB-1700

I WIND SPEED IN K1N01SDIRECTION 1 -3 -6-6 7-10 I1-lb 17-71 2?-21 28-31 34-40 41-41 48-S5 GE 56 TOTAL MEANtOCUREES) I WINO

N. I .1 .6 .9 .2 2.8 5.6

NNE1 .4 1.0 1.0 .3 2.7 b.8

NE I .9 1 .2 1 .3 .8 4.1 7.0

ENE I.9 .6 1.0 2.5 8.9

I 1.1 .6 .9 .1 2 .? 5.4

ESE I 4 1.0 .1 1 .5 4 .4

SE I 1.4 1.0 .5 2.9 4 .4

SSE F 1.0 .9 .3 .21 S

S 2.4 4.3 2. 3 .8 .1 9.8 5. 7

Sw 2.3 5.4 4.5 5.1 .5 .1 17.9 8.4

AA1.2 2.6 5.4 3.2 .6 13.0 8.9

I 1.3 1.7 5.1 3.0 .6 .1 11.9 9.1

WNW .6 .9 1. 1 .2 ?1 .9 6. 8

NW .8 3.1 .5 .6 0.0 6.4

NNW I . .3 .1 .4 1.0 9.0

VARIABLE

TOTALS I 16.3 21.9 29.5 17.6 2.2 .2 100.0 1.0

TOTAL NUMBER Of OBS[RVATIONS: 928

1 LtOlIAL C1147016O&Y BRANCH PELCENAGE FRLQULNEY Of OCCURRENCE 0D 5URF ACL IN oIRC ION VERSUS WIND SPIEDUSAFETAC FROM HOUL OBERVATIONSAIR WEATHER ERVIC /MAC

STATION NUMBER: 1218S5 STATION NAlE: FAIRCHILD AFB WA PERIOD OF RECORD: 76-85MONTH: MAY HOURS(LSIi: 18U-Z30J

.... o..... ... ...... ... ....... *.......o*......, °... ...... . o.... . .ooo oo ....... .....oo ... o °........°.....•.... .......... °...I WINO SPEED IN 1N0T5

DIRECIION I - -b 7-10 11-lb 17-21 22-21 28-33 3-0 1-N? .8-55 GE Sb TOTAL MA N10 EGREE I I WIND

..........o... ...... o......................... : °. ..... ..... . ..... .............. ... °°.................. . .... °.... . .

N I 3.6 1.6 .b .1 3. ..1

NNE .4 1.7 1.1 .2 4.5 5.0

NE .7 .5 .9 .3 .1 2.5 7.0

ENE .7 .4 .8 1.9 5.5

E 1.8 1.5 .8 .'. 4.1

ESE 9 .9 .2 2.0 3.6

SE .8 1.2 .3 .1 .1 2.5 5.3

[2.1 1.3 .1 3,. 3.7

S 3.3 3.6 2.0 .7 9.3 5.4

SSW 3.2 4.2 3. 13.2 .1 11.8 b.O

A I 3.7 5.6 1.1 .8 .2 5.3 5-6

WSW 2.5 8.6 4.7 1.3 .1 13.2 b.5

I 1.9 2.5 1.9 1.5 .2 9.0 1.0

WNW .1 1.0 .7 .1 2.. 5.5

NW o. .9 .2 1.9 4.1

NNW .4 .9 .3 1.b 5.0

....• .° .. . ........° . ...... ......o. . .o.............. ..... oooo.... . .. .......................... .. ...... °...........o..VARIARIE

CALM Ij#///Ij jII/#/II/II#/I/jI/II/I/jI/jjj//j/I/U j,//j#,//jI,,//I///,,// I t//jIUIUI/I/,I IN.'o IIIIII

TOTALS 25.8 32.2 ZO.3 6.4 .'8 .1 100.0 8.8

o,...°..,..M .. o.... 8SERVA 918....... ... . .o..o.. ,o°° ... .. . .. ... ... ,ooo, ...... o.... .. ,.... ,,.


ULOAL CLIMATOLOGY BRANCH PIBLEN'AG[ FRLQ~UENCY OF OCCURRENCk OF SURFACE WINO DIRECTION VERSUS wIND SPLEUSAFEl AC FROM HOURLY OBSERVATIONSAIR WATHER S [VICEIMAC

STATION NUMBER; l727RS STATION NATE: FAIRCHILD AFA A PLRIOD OF RECORD: 76-8MONTH: MAY HOURSILSI): 2100-2300

....................................... . ............ ....... ..... .. . .......... ........................... .. ...I wIND SPEED IN 45015

DIRECTION I 1-3 N-b 1-10 Il-lb 17-21 22-21 28-33 3N-N0 4I-4I N8-SS bE 56 TOTAL MEAN

IDEGREESI I W SIND.............. ............................ ,,, .... ............. ... .... ...... ............ .. .......................N I .8 .8 .• 1 .6 4.13

NNE 1.3 1. .2 .1 5.6

NE .8 .' .8 2.1 4.8

[NE 1.3 .5 .2 2.1 0.1

E I 1. .3 .l 2.6 3.8

[SE .9 .5 I .N 2.9

SC .9 .9 .1 1.9 3.1

SSE I 1. .8 .1 2.2 3.0

s 3 .6 3.13 1.0 .1 8.21 4 .4

SoW %.0 5.9 2.6 1.0 .1 11.6 5.

S I -4 lN .I 2.3 .9 .2 10.9 5.8

WSW Z.6 2.9 2.0 .5 8.0 5.2

W 3.6 3.6 1.2 .9 .1 9.N 5.0

WN I .7 1.3 .1 .3 2.6 5.6

NW *. .9 .1 1.6 5.1

NNW .I I.1 .2 1.3 5.2

... ....................................... .......... ..... ............ ..... .................................... . ..VARIABLE

CALM III //I////II /I//I///i//2/o//I o,///j/I//////,o/ j/j jf /j//uonu/o /////o 21.2 I//Ill

TOTALS 26.9 29.9 11.6 N.O .3 .1 100.0 3.6

. ......................................... .................-................................................


.5_

ULUOAL CLIMATOLOGY BRANCH PLERENIAGE FRLUCNLY Of OCCURRENCL OF SURFACE AIND DIRECTION VERSUS AlNU SPLEUUSAFEIAC FROM HOURLI 0BSERVATION

AIR WEATHER SERVICEIMAC

STATION NUMBER: 727855 STATION NAIE: FAIRCHILD AFB WA PERIOD OF RECORD: 6-A5MONTH: MAY HOURSiLSI|: ALL

.. oooo.........o.......................... .. oo. .o °. oo°......... ° ........... . ..° , . ~.oo. o ............................. ..

I WIND SPEED IN KNOTS

DIRECIION I - N-6 7-10 11-1b 11-21 22-21 28-3T 3N-HO 41-47 4-55 GE 5b TOTAL MEAN

4OEGREESI It WIND.. .....o . . .°.. ......... ...o...°°°o ...... o .o.*. o°°, ......... o°°,o..........•. .... °o .o. * . o . ° . *° . . °. .......

N . .7 .A .. .1 1.. 4.?

NNE 1.1 1. .9 .2 T.b 5. 1

NE 1.2 1.2 1.1 .H .0 T.9 5.9

ENE 1.4 1.8 .9 .3 .0 .0 4.4 5.5

I 1.5 1.7 .b .1 1.9 4.5

ESE .9 .A .1 .0 1.9 1.9

SE 1.2 .8 .2 .0 .0 2.3 3.9

SSE 1.6 1.3 .4 .1 3.4 4.2

S 3.2 9.8 2.9 .6 .0 11.5 5.H

55W 2.9 9.1 5.8 2.3 .1 .0 15.7 7.1

SW 1.9 3.8 9.5 2.8 .3 .0 13.H 1.8

WSW 1 1 2.2 2.8 1.6 .2 .0 8.1 7.7

A I.b 2.0 1.b 1.1 .2 .0 6.b 6.9

WNW .6 .8 .5 .1 .0 2.0 5.6

NW .3 .b .3 .1 1.1 5.5

NN .3 .4 .2 .1 .9 S.7

o°.°*.........o. ° .°.°........................... .. ...... ° ... o.......o.............°....................°..............

VARIABLE /

CALM IIIII ///II ///I/I/// //i/////IJ///I i iI//////II/il/ i//i/ii/III i//,// 19.1 IIIII/

TOTALS 21.3 29.9 23.2 10.1 .9 .1 100.0 9.1

.. . . . . . . . . . . . ...... ,°°....o..°..o°°...oo.° .o°. .°° .. °° .°o. o.°.........oo o° o . . . . .° °. o°°°° . ....... ,°o .... °° .. ° ...... .. °. oo..


,4ot

UL(UAL CLIMAlOLOY BRANCH LRCENTAGL FQLWUjfkCY (f OLCURRTNCL Of SURFAC[ WINO OIRECIION VERSUS .IND Sp EuUSAFETAC FROM HOURLY ORSERVATIONSAIR i[A1HER SERVICEIMAC

STATION NUMBER: 72785S STATION NAIE: FAIRCHILO AFB WA PERIOD OF RECORD: 75-NMONTH: JUN HOURSILSI): 3OD-Ol03

WIND SPEED IN KNOTS

UIRECl.N I I-$ 4-6 7-1 Il-lb 1 l-1l 22-21 28-33 I -NO 4i-Nl 8-55 41 5b TOTAL MEAN(DEGREES) I WIND

N I .7 . .2 1.4 4.1

NNE 1. 1.1 *N .1 3.2 4.3

NE I-. 1.I 2.4 3.4

ENE 1.3 1.3 .2 2.9 3.9

f .6 1.0 .1 I.1 3.9

ESE .2 1 1.0 3 . I

5 .4 .4 2.3

SS1 1.S 1.7 .2 3.S 3.5

S 3.9 4.6 1.3 .2 9.9 4.3

SSW 2.9 6.2 4.4 2.5 .1 16.1 b.8

SW 2.4 4.q 1.2 .8 10.8 5.8

WSW 2.4 2.0 .8 .2 5.5 4.2

I 3.3 2.1 .8 .1 6.2 q.I

WNW .6 1.1 .4 2.0 4.6

NA .6 .5 1.3 3.3

NNW o. .4 .3 .3

VARIABLE

CALM /I~ i /, , 1 .4 111111

TOTALS 24.3 28.1 12.0 4.0 .1 100.0 3.4

3OTAL NUMBER OF OBSERVATIONS: 840

I

6LOBAL CLIMATOLOGY BRANCH PERZENTAGE FLQUENCY OF OCLURRENCE OF SURFACE WIND DIRECTION VERSUS WINU SPLEJUSAFEIAC FROM HOURLY OBSERVATIONSi AIR EAYHLW,5.ER¥1CLIM:C

STAION NUMBLR: 1 7855 STAI|ON NAIE: FAIRCHILD AF8 WA PERIOU OF RECORD: 75-84

MONTH: JUN HOURSILSII: 3U3-OSU3ooooo... ..... .. o ..... . * ..... *..... .°......... ........................ ..... ...................... ..........................

I WIND SPEED IN KNOTSDIRECIIIN i I-I N-b 7-I0 Il-lb 11-21 22-27 26-31 34-40 4I-N1 B-5S GE 5b TOTAL MEAN

IDEGREESI I % WIND

.. o......... . ...... :; ..... ; .... .. ;..o .. °......o...o. o.................... .. .................. ..°o... ........... . .. o..N B. .6 .1 |,N I.N

NNE 1.5 .3 .6 .1 2.4 4.1

NE 2.2 1.7 .6 4.5 4.O

ENE Z.2 2.2 .6 4.9 4.1

I 2.0 1.1 .1 1.2 .5

E I .6 .2 1.0 1.1

SE 2.0 .6 2.S 2.S

SSE 3.2 1.6 .1 4.9 1.1

S 1.1 6.3 2.3 .5 12.4 4.9

SSW 2.N 6.7 7.5 2.2 18.7 7.0

SW .8 3.6 3.1 1.0 9.3 1.0

WSW .6 .9 .3 .1 2.2 N .9

i I .8 I.4 .6 2.6 4.S

WNW S. .2 .1 6 3.T

NW .1 .1 .2 3.5

NNW .3 .8 .1 1.3 N.I

... ;; ;;; ';..............................................................................................................

CALM | ii/iii/ iiitii/ Ii// IIii2I/I2I/II//i/j// /ii/II2//I/2I i/I/I/.I/ 21.8 IIII/I

IOTALS I 23.1 26.5 16.N 3.8 .1 100.0 3.A

o....°o...o...o........o.......oooo. .... ..o.......o.o.o..o..°........o..o.......~~........o ...... °......°oo.....o°.


a

__°

05CLIM8OL1Y BRANCH PIRLNtAft INL6.UENLY OF OCCURRENCE OF SURFACE WIND DIRECTION VERSUS WIND SPEEDU68113£C FROM H0URLy ODSER8A1IONSAIR .[AINLR OFRVIC[jMAC

SIAIION NUMBER. 7Z1865 STATION NA6*: FAIRCHILD AF8 WA PERIOD OF RECORD: 75-84

MONIH: JUN HOURS6ILSI): 0bUO-080..... .. *...... .... ............... .......... o............ . * . . . . ......... *......... ................ ............ .. ....

J wIND 6P(00 IN ANOTS

UIQLCIION 1 5-3 N-b 7-10 11-16 11-21 22-27 28-33 34-40 4I-NI 48-55 E 56b IIAL MEANS[Ul 6E[6 I I WIND

N ...8 .. .2 ... 3.8

NNF .8 3.2 .1 .1 2.9 6. 1

NF 1 .9 2.3 1.1 5. 4.7

f [ I |.1 S.2 2.3 7.2 5.2

1 2.6 1.2 .7 6.4 4.I

EST I .1 1.1 . 2.4 3.6

Sf 2.0 1.6 .1 3.7 3.2

ssf 1.9 4.0 .2 6.1 4.1

S 1 6.6 .0 .6 14.8 5.4

SSW 1.7 8.9 10.8 2.8 .1 24.2 7.5

SW I .1 2.4 6.0 1.? .3 10.6 8.7

W . 5.2 5.8 .1 5.6 b.1

I .4 .2 5.0 . 1.8 6.8

WNW I. .5 .3 .6 9.5

N .2 .2 . .6 5.4

NNW .3 .2 .4 3.3

,... ... .... ... °........................................ ....... ... ......... ........................ ......... ... ,......8441A8L1 I

CALM |ji /iiI/iii/ /ii////I2/I/////2 /j//////////////////////Uj/II//// j, / 7.9 /1///

TO3L I 19.6 37.0 29.1 6.0 .4 10O.O 5.5

........ o. °............ ..... .......... o.....°..°.........°.., ...., ,. ........ °.............. °,, .......... ,... ......... ...

OTAL NUMBER Of OBSERVATIONS: 930

...3

GLOBAL CLIMATOLOGY BRANCH PLRCENTAGE FREQUENCY OF OCCURRENCE OF SURFACE WIND DIRELTION VERSUS uIND SIEIUUSAFETAC FROM HOURLY OBSERVATIONSAIR WEATHER SERRICE/MAC

STATION NUMBER: 727TS5 STATION NAIE: FAIRCHILD AFB WA PERIOD OF RECORD: 15-8.

MONTH: JUN HOURS(LS|; 39U03-1103........ °..........° ............ ..= .......,. ..... ..... = = . ° ..*..=,°,, .... .oo=...=, ......................... °......o*.*

I WIND SPEED IN ANOTS

DIRECIION I 1-3 N-b 1-i 11-lb 17-Z! 22-27 28-33 3.-40 41-47 48-55 ,E Sb TOTAL -LANIDEGREESP I I WIND

... . . .o ....... **.. . .. . ...... ; .............. ................... *.*.... ................ *.... ................ ............N . ... .6 .2 I. 4 4.3

NNF .9 .7 .7 .2 . 2 .6 6.4

NE 1.1 1.1 .9 .3 3.7 .1.

ENE .9 1.1 2.3 .4 4.8 b.T

1 2.0 2.4 1.2 .2 5.9 5.0

ESE .7 1.0 1.7 3.6

SE 1. 7 1.2 .2 1.1 4.0

SSE .N 1.9 .6 2.9 4.8

S3.2 ).0 N.7 .4 .1 15.8 5.6

SSW 1.3 6.b 8.2 3.3 19.4 7.6

SW 1.1 4.8 7.3 4.7 .2 18.1 R.6

WSW 1.1 2.) 4.4 .1 .2 .1 8.7 7.7

.8 2.0 .6 .4 .1 3.9 b.2

WNW .3 .4 .6 .3 1. 7.I

NW .2 .3 .2 .1 .9 5.5

NNW .3 .4 .1 .9 4.1

°................ *... ........ .... ...... .. ° .... ............................ ............ ... °.°,............................

VARIABLE I

EI AL5 I 16.8 34.0 32.2 11.2 .8 .i 300.0 6.4

II

LOB CLMAIOLOY BRANCH PE RLNIAGE FREQUENCY OF OCCURRENCE OF SURFACE WIND SIRECTION VERSUS .140 SPECDJSAFEIAC FROM HOURLl ORSERVATIONS

AIR ,EATHfR SERVICE/MAC

SIATION NUMBER: 727855 STAKION NA4E: FAIRCHILD AFB WA PERLOD OF RECORD: 75-8

MONTH: JUN HOURSILSII: 1,00-140J. ....... ... ... ..... , o............,........... ... .... °...... ..... ..... ,... ......... ............ ............ .......

l WIN0 SPEED IN AtNOTS

DIRECIION I I -3 4-6 ?-o 1 l-16 17-21 22-27 28-33 34-N0 41-47 8-55 GE 5b I1IAL MLAN

IEGREcSI I % WIND

° .. ... ..,....... .. , . ..... ... ...... ......... ....... .. °............ ............ ,......... ............. ......... . .4:;N I .7 1.0 .4 2.1 9.3

PON 1 .2 1 .0 .6 .4 2.2 7 . I

NE .2 I.2 .2 .2 1.9 6.1

ENE .6 .9 .7 .1 2.2 5.6

1 1.6 1.3 1.0 .1 4.0 S.0

ESE .7 .6 .4 .1 l.8 5.3

1, 1.4 1.0 .1 2.6 3.3

SSE .8 1.0 .6 ?.3 4.4

5 3.6 5.1 2.9 .7 IZ.2 5.4

SSW 1.7 4.9 7.2 2.6 16.3 7.6

SW 1.3 4.7 A.7 5.1 .6 20.3 8.8

wSW I 1.3 0.0 5.6 2.3 .4 .2 13.1 A.6

i.2 2.6 3.4 1.6 .1 B.9 7.5

NW . .9 .2 .1 .2 2.1 6.2

NW .6 .4 .2 1.2 4.6

NNW . .4 .4 .2 1.4 6.5

.°.° ,.. , . .. .,.... ..........•......°..... .... ............. °. ........... •......... .°.......... ... ..... ,........... .......BARIABEE I

CALM 5 /ii///i/.2iiiiiiiii //iI////,'/i///i/7I///I///////I////I//I/ ///I/ /i/// 6.2 /11/

TOTALS I 16.8 30.0 12.9 13.6 1.3 .2 I0O.0 6.8


LUO&L CLIMATOLOGY BRANCH PLRLNIAGL FkLEUCNCY OF OCCURRENCL OF SURFACE AINDS IRELTION VERSUS WIND SPLESUSAf IAC FROM HOU9L OBSFRVAIONSAIR FATHCR SERVICE/MAC

STATION NUMBER: 727855 STATION NAIL; FAIRCHILD AF WA PERIOD OF RECORO: IS-84

MONTH: JUN 1OURSLSII: ISO-1703o.. ........ o... ......................... . o . . ,. . ° ... , o . ..... .. °........ .....................................

I WIND SPEED ON 87N075

OIRECIION I 1-3 4-6 I-AO II- I t -1-21 / 2-2 7 8-33 3N-NO NI-NT NB-5S UE 5b TIUAL MEAN4DfEGRELS) I AIND

.... °. ...........° o.. ............. . .. .... .°..... °................,......*.............................°......... ;........

. .8 1.1 .2 3.1 5

NNE .6 .6 1.2 .3 .1 2.8 1.8

NE .6 1.0 .4 .! 2.1 S.0

[NE I 1 A.7 .. .1 2.0 .4

t 1.8 .8 .4 .1 .1 1.2 4.b

[sE .4 .N .2 1 4.5

SE .. .7 .3 1.6 4.0

SSE 1 3 1.4 .1 1.5 4.5

S I .B 4.3 2.A .6 9.0 0.9

rSSW 1. 4 N.1 6.6 3.1 .1 .1 14.1 7.5

SA 2.2 5.1 6.9 3.6 .4 181 . .9

WSW 1.2 2.9 5.9 2.1 .2 .1 . 8.4

I 1.6 4.7 4.1 2.1 .3 .1 3.1 77.?

WNW .4 1.6 3 1 . 2.7 6.0

NA I ~ . 3 1 3. 0.4

NOW I . .6 .3 .1 3.4 5.2

VARIABLE I

TOTALS I 16.6 10.8 12.3 12.0 1.3 .3 100.0 6.0

................... o. o........ . . ..... ........... ....° o . ........... o . o......... ................ ,.....,..............,....


£

,L ubAL CLIMAIOLOGY BRANCH PER.tNIAGE RLOULNCY OF OCCURRLNCE OF SURFAC WIN DIRECTION VERSUS .INO SPEE

uSAF LI AC FROM HOU8LV OBSERVATIONSAt1 A THFF StkYICt/MAC

siArros N(JMH8P.8 7ZT85S STAIION NAIfL; FAIRCHFIIO AFf iA PL1OL) OF RECORD: 15-84MONTH: J k, HOURS(LSIJ: iBU3-2 O3

,IND PED 8901I

LR EC 1 ON 1 3-3 1 9-b -10 1-l b 17-21 22-2? 28-33 SN - 4 1- 7 98- 5 6F b OTA L "AN

I0EUREES) I I WINb.. . .. .. .. . .. .. . . .. . . .. . ... . ,.. .. .. . . ,o. . .. , .......................... ,............... , . ......

N .9 .9 .. 2.6 .. 7

NNE 2.0 1.8 .1 .5 4.9 4.9

N! 1 .0 .9 .1 2.6 N.

FNE .3 .9 .3 1. 4.6

L 1-7 I .0 .3 3.1 3-5

ESE -E .6 .I I .5 3.7

S f .9 .b .1 1.8 9.2

SSE 1.7 1.? .3 1.2 3.8

S I 3.8 9.0 2.z .5 10.5 5.0

Sw 2.9 4.1 3.7 .3 .1 11.4 b.0

SW 2.1 5.1 5.1 1.6 13.8 6.7

WSW 4.0 4.1 3.1 .9 .1 12.3 5.?

I 2.0 9.9 2.0 .9 .6 10.4 6.6

WNW .7 .2 .6 .6 .1 3.1 1.0

NW . 1.2 .2 1.8 5. I

NNW .5 .2 .5 .2 1.4 7.2

.. .. .. . .. *.... ... ........... ... ..................,.... .. ........ ,......o.... ..............,,.......... ..................888188(_1 I

cAt I I///jijj/2,///Iijjijjl//lliI/lI2Il//I/l/j/#1#/l, lll//l#.11/lil/ l/ IN .0 /1//l/

TOTALS I 2S.5 32.8 20.,7 5.5 1.4 100.0 4.6

.... •... ° .... . .. ° .... ............ ...... ,......°........... .. ,...,o ..... .... o ................. . ,........,....................

1OA18 NUMBER81 OF OBSERVATIONS: 069

S

AD A159 700 FAIRCHILO AFII VASHINGION REVISID UNIFORM! SUM AT OFSURFACE WEATHER OBSER.. U) AIR FORCE ENVIRONMENTALTECHNICAL APPLICATIONS CENTER SCOTT A. SEP 85

tIN(tASSIF IED USAFETACIOS-05/051 F/G 4/2 NL

IIIIIIIlllll11111111

-MENNENhhhhloonhhhNONEh

EMhmhMhhhmhhlmhhhhhhhhhhmhl

LI~____ ,,_o_ z ,i,,3 915 02-2' l ' 11111 2 ----

1 -2 5__ 11 -

......... /

LLObAL CLIMAIOLOGY BRANCH PERCENTAGE FRLQUENCY OF OCCURRENCE OF SURFACE MIND DIRECTION VERSUS wIN SPIEE7USAITAC FROM HOURLI OBSERVATIONSAIM WEATHER SERVICE/MAC

STATION NUMBER: 127855 STAIION NAME: FAIRCHILD AFB WA PERIOD OF RECORD: 75-ARMONTH: JUN HOURSILSI}: 2100-200

............................. °.o..ooo= ........ ............................................................ .... .o.o....*.=.. °

I .11ND SPEED IN KNOTSDIRECTION 1 1-3 9-6 7-10 l-16 17-21 22-21 28-33 4-0 41-47 48-55 GE 5b TOTAL MEAN(DEGREES I I bIND

.. .. .. .. ;°° ° °:° ° ° ° °°; °° ° ° . . . ;. . . ;. . . ;. . . . . . . . . . . . . . . . . . . . . ..... ...~o °°......-... - ..... .... ...N 1o5. .5 .2 .3 2.R 3.6

NNE 2.3 .8 .1 . 3.6 4.1

NE 1.1 .6 .b .1 2.R 5.0

ENE 1.0 .8 1.8 3.5

L 1.1 .8 .1 2.0 3.6

(S[ .R .2 .2 .1 1.0 6.0

SE 1.1 .1 1.2 2.4

SSE I.R .6 .1 .1 2.3 3.7

S 4.5 4.4 1.9 .2 .1 11.2 4.6

5SW 3.c 4.4 3.0 .5 10.8 5.5

SW 3.2 3.2 3.3 .8 10.6 5.8

WSW 3.1 3.5 2.6 .1 9.3 5.0

A 3.S 2.6 1.4 .6 8.1 N.9

WNW 1.9 .7 .6 .1 3.3 4.2

NW .7 .5 I1 1.3 S.5

NNW .5 .5 .| . 1.2 5.0

.°°...o° ....o.o .........o ......o., .....ooooo .oo ....... ..oooooo .....o.o ...o..... ..o ....o .o ....o ...................o.o, ....o .VARIABE

CAL" 27 Z.5 /11111

TOIALS 30.2 24.3 14.S 3.3 .1 100.0 3.5

oTAL NUBER.o ..OF SEV°oNS: 809. ° ° ° ... °°...° .. °°°.°.°..°......°..°.... °.. .°.. .... °.. °...°...°....°................


C.LObAL CLIMATOLOGY BRANCH PLRCENTAGE FRLJUENCV OF OCCURRENCE OF SURFACE wINO DIRECTION VERSUS WIND SPEEDUSAFtIAC FROM HOURLV ORSERVA7rONS

A ER WEATHER SERVIC Im C

STATION NUMBER: 727855 STATION NA4E: FAIRCHILO AFB A PERIOD OF RECORD: 75-84MONTH: JUN HOURS|LS|I: ALL

.... .° ... .° . . . . . . . . . . . . . . . . . . . . . .......,....... ......o..o..o.° o ~.....,,* ....... °. ., ,......,........ .... ... .... ... ,...I WIND SPEED IN KNOTS

DIRECTION I 1-3 N-b 7-10 l-lb 17-21 22-27 28-33 3I-4O 4I-47 48-55 GE Sb IOTAL MEAN

ADEGREESI I WIND

............. .... ,. ,;....,..,;...,.....; .. o.... oo........................ .. ............. o.............. .... ..... .. .......

N .9 .6 .N .0 2.0 4.4

NNE J.2 .9 .6 .3 .0 3.1 5.5

NE 1.2 1.3 .6 .1 3.1 N.7

ENE 1.1 1.5 .8 .1 3.4 5.0

E 1.7 I.S .5 .1 .0 S.7 4.T

ESE .7 .6 .2 .0 1.4 4.1

SF 1.3 .7 .1 2.3 3.k

SSE 1.5 3 . 7 .N .0 3.6 3.9

S 3.5 5.4 2.8 .5 .0 12.1 .. Z

SSW 2.2 5.7 6.5 2.0 .I .0 16.S 7.1

SN 1.6 N.2 5.6 2.5 .2 14.1 7.7

WNS 1.8 2.5 3.1 .9 .. .1 R,5 6.9

W: 1.6 2.6 1.8 .7 .1 .0 6.9 6.N

ANW .6 .8 .4 .2 .0 2.0 6.0

Nw .N .5 . .I 3.1 N.7

NNW .N .N .2 .1 .0 3.1 5.2

• .el oo~l. .. .. . . . ...................................-- -....-- - -- . ..- .. . .. .... . ... , ... ............-. ...............VAIABLE 1

TOTALS I 21.5 30.0 24.0 7.5 .7 .1 100.0 5.1


I

GLOBALACLIMATOLOGY BRANCH PERCENTAGE FREQUENCY OF OCCURRENCE OF SURFACE WIND DIRECTION VERSUS WIND SPEED

uSAFET C FROM HOURLY OBSERVATIONSAIR WEATHER SERRICEIMAC

STATION NUMBER: 127B55 STATION NAIE: FAIRCHILD AFB WA PERIOD OF RECORD: 75-R4MONTH: JUL HOURS(LSrI: O000-0203

o....o......o...~... ..... .. ...... .... o.. . *..................o...... ..... ,... ..... . .o....oo....o.... ..... •..... ,,.,*....,I WINO SPEED IN ANOTS

DIRECTION 1-3 4-b 1-10 11-16 11-21 22-27 28-3 14-40 41-47 48-55 GE 56 TOTAL MEAN1OER ES3 I I WIND

. . ...... ...... ;...... ...... :; .................. .... ......... ...... ....... ... ....... ..... .......... .... *.. .... .....N 1. .6 .2 1.4 3.2

NNE 3.2 1.4 .5 5.1 3.4

NE 2.4 1.4 .1 3.9 3.1

ENE 2.3 2.0 .5 4.7 3.6

I 2.3 .8 3.1 2.T

ESE .6 .2 .8 3.4

SE 1.3 .1 1.4 24

5SF 1.8 .9 .1 2.9 3.1

S 5.0 2.3 1.3 .2 8.8 4.0

SSW 2.2 3.7 2.9 .7 .1 9.6 6.0

SW 2.6 2.5 1.5 .6 7.3 5.3

WSW 2.8 1.7 .1 .1 4.1 3.6

s 3.2 1.5 .2 .1 S.1 3.5

6NW .1 .2 .1 .7 4.1

NW .6 .1 .2 .9 4.3

NNW .2 .2 .1 .6 4.0

RARIABLE

CALM I IIII j//II i jI d Ij/ijjjI ii i.'/ijII /Ij/j//I//II/j/jjI/jj jII//I ////j/ I//////III/I 39.2 I1111/

TOTALS 31.6 19.6 1.8 1.6 .2 100.0 Z.5

.... . ............................ . .................................. °.°..... .........°.. ............o....o....

TOTAL NUMBER OF OBSERVATIONS: 8b

a

GLOBAL CLIMATOLOGY BRANCH PERCENTAGE FREQUENCY OF OCCURRENCE OF SURFACE WIND OIRECTION VERSUS WINO SPEEUSAFETAC FROM HOURLY OBSERVATIONS

kiR WEATHER SERVICE/MAC

STATION NUMBER: 727855 STATION NAIE: FAIRCHlILO AFB WA PERIOD OF RECORD: IS-8.MONTH: JUL HOURSTLSl1: 03DO-05D0

.... •........ ..... = ...... .......=..... *....o... ........ .* .... ..... ,* .*.**... .,*..=.. , ..... ... * ..... •.......,.... °.....I WIND SPEED IN TNOTS

DIRECTION I 1-3 4-6 7-1O 11-lb 17-21l Z-1 2B-$ 34-40 41-4 48-SS E 66 TOTAL MEANIDEGREES) I W AIND

N .7 .7 .2 1.6 4.j

NNE 2.B 1.B .2 4.R 3.2

NE I .1 1.7 .7 5.5 3.5

ENE 3.9 3.2 .1 7.2 3.5

L I 3.1 1.4 4.6 ?.9

FSE 1.3 .1 1.4 2.2

SE I 1.3 .1 1.4 2.26Sf 2.2 .7 .1 3.0 2.8

S 4.9 5.6 2.R .1 13.6 4.6

SSW 2.1 4.3 5.9 2.0 14.3 7.1

Sw 1.1 2.2 1.4 .2 S.0 5.7

WSW .2 .1 . .1 .8 b.N

A.4 .3 .1 .9 3.6

WNW .6 .1 .7 2.3

Nw I 1 *1 .1 .5 7.0

NNW .3 .1 2.

VARIABLE

CALM I j//I//Il//Ij//////Ii/I/jjjII////jj/i i//j/I//II//I/jj//d/IV/I j///2II/jII.'/II//iI//II/ 34.6 11///1

TOTALS 28.3 22.4 12.0 2.8 100.0 3.P

....... .. ., . ........... * * .. . **** ..... .. ..... *.. o,,......*... ..... ... ° .... ,. . o .... .,°... ..... .... ° .... .... . ,


q4

bLOBAL CLIMAIOLOGY BRANCH PLRCENIAGL FRLQUENCY OF OCCURRENCE OF SURFACE wIND DIRECTION VERSUS WIND SPEEDUSAFETAC FROM HOURLY OBSERVATIONSAIR WEATHER SERVICE/MAC

SIArION NUMBER: 727855 57*71 4 NAME: FAIRCHILD AFA WA PLRIOD OF RECORD: 75-B4MONTH: JUL HOURSILSTI: 0600-0600

..., .o ... . .. ... .o~.... .. o o.. oo.. o.. ... ,oo . . o o . , . o* o , . .o o. ... ..... o .o ....... . . . . .o . . ,

J BIND SPEED IN ANUISDIRECTION I 1-3 4-6 1-10 I|-lb 17-21 22-27 28-33 34-40 41-47 48-55 GE 5b TOIAL MEANADE6REES I I WIND

0,.. oo~~o.. .o. .. o. .0. . . .. . ... . .*.....*.. o. .. ... ....... ......... * .. ......... ..o .... .. ..*.........o..... ° .

N A .2 .I .1 . 4.0

NNE 1.1 1.7 1.4 .1 4.3 5.4

NE 2.6 4.1 2.7 .5 9.9 5.5

ENE 3.4 6.0 2.4 11.8 4.8

E 4.8 J.1 .6 8.8 3-b

fSE 1.5 .8 .1 2.4 3.3

SE 1.8 .8 .1 2.7 3.5

SSE 2.4 1.7 .4 4.5 3.6

S 5.9 7.s 4.1 .4 1B.0 4.9

SSW 2.3 7.0 6.6 1.6 17.4 6.6

SW .3 2.2 3.5 1.4 7.4 V.2

WSW .4 .2 .8 .! 1.5 6.1

A .3 .3 .4 I.1 5.4

ANw .1 .I .2 4.0

NW .2 .2 .4 3.S

NNW I 1 .2 .3 4.3

VARTABLE

CALM I I///Ii/III//Ii//Ii/iI////I///I//I/IIII//ii/ .8 IiI

IOlALS 27.5 36.2 Z3.2 4.z 100.0 4.8

........ .. o ..... o.o....o .... ............. . *........ *.....°.........,....o..o. .. ..... .o....... *.. . ..... o....... ......


S

6LOBAL CLIMATOLOGY BRANCH PEI ZENTAGE FRFQUENCO0 OCCURRENCE OF SURFACE WINO DIRECTION VERSUS WINU SPEEUUSAF ITAC FROM HOURLY OBSERVATIONS

AIR wEATHER SERVICE/IMAC

STATION NUMBER: 727855 STATION NA4E; FAIRCHILD AFA WA PERIOD OF RECORD: 75-84MONIH: JUL HOURSILSIT: 3900-110J

* .*. . . .... o .o* .oo*°......... .. , ...........*.... ..........,o,.......... , ...... , ,. ................. . **,°..... , .... .I wIND SP[E IN MNOTS

DIRLETTUN I I-I N-b 111 Il-lb 11-23 2Z-Z1 28-33 39-NO 91-4! 98-55 SE 56 TOTAL MEAN

(DEGREE! I I WIND

.... °...........,.....o°. ...... :.......... .... o..............°°....... ........... ......... .......... ...........o.... .............N -2 .9 .2 .9 5. 5

NNE .9 3.7 1.9 4.S 5.8

NE 2 .3 2.7 2.4 .6 8.0 5.7

[NE 3.5 2.7 1.6 .3 6.1 5.4

E 2.2 3.7 .9 .1 6.8 4.5

ESt ! .N .4 1 1.9 3.4

SE .5 1.1 .1 3.9 4.6

SSE .8 1.0 .4 2.2 4.9

s 4.3 7.3 9.3 .8 .1 3b.1 5.5

SSW 2.0 6.5 6.9 2.5 .1 18.0 7.3

SW 3.3 S.9 6.9 2.2 .3 16.6 7.5

WSW .5 3.3 2.3 .5 4.6 1.3

W 1.0 3.2 .5 .1 2.8 4.8

WNW .9 .3 3 .2 2.6

NW .4 .3 .5 3.8

NNA W .4 . .5 5.4

.o, ...*.. .. , ......... .*.......... ............................. ...... °... ........ ,........*.... .......... ........ ......

CIRAL . II/CALM I//I //U//IidI/i ii j/// j/jjj///j//j/jj j/ /I///j/////j ////j////J//jj/jI/// 7.2 dill/I

TOTALS 19.9 36.6 28.1 7.1 .5 100.0 5.7

... *................,...*.,..o. .... o . , ....... ,,....,... ,,. ... ,.,,......,..., .. ° ,..., ..... ... . ............ . , ..... ,.......


3

GLOBAL CLIMATOLOGY BRANCH PER'.LNIAGL FRLUENCY OF OCCURRENCE OF SURFACE IIND DIRECILON VERSUS wIND UPCED,ISAFIATC FROM HOURLY OBSERVATIONSAIR FA HIR SERVICE/MAC

STATION NUMBER: 727855 STATION NA4E: FAIRCHILD AFB WA PLRIOD OF RECORD: 75-8MONTH: JUL HOUBSI LSII: 1200-1400

°. ° . *. . . ..................................... ..... . . . ................................... ........... ....... ° ,I .. IND SPEED IN NOTS

DIRECTION 1-3 -b 7-10 LI-16 17-21 2z-z7 ?i-33 34-AD 41-41 48-S5 GE %b TOTAL MEA4

IDEGEESI I a *IND............... ,. . , ...... :; .................................................................N .S .8 .3 1°I.6 4.5

NN I 1.1 1.9 1.1 .1 4.2 5.5

NY" 1.7 2.0 l.A .1 5.7 1.5

INE .5 .8 1.0 .1 2.4 5.n

t 2.0 1.5 .5 4 .1 . 7

ESE 1.0 .2 1.Z 2.6

EI. .3 .1 1.4 .

5 .6 I . 3 .5 .1 2.6 5.0

S 3.2 4.8 3.8 .8 12.6 S.I

SSW 2.2 5.6 6.5 2.2 .3 lb.1 7.1

SW 1.6 5.4 b.8 1.1 .1 15.6 7.5

WSW A 1.1 3.? .2 1.5 .2 I0.6 7.4

I 1.6 2.? l.8 .6 .1 6.9 6.0

WAW .4 1.0 .2 .1 1. 4.8

NW 1.1 .4 .3 .2 .1 2.2 5.8

NNW .6 .5 1 1 . l.8

........o.. ... oo........................................................................... ..V RIABL I

TOTIlES 1 0.3 32.9 29.0 7.5 1.1 300.0 5.T

O N.o...o................... .o .... ........

IOIAE NuMBELR OF OBSRVATIONS: 93 0

6

bLOdUAL CLIMAIOLOG¥ BRANCH PERCENTAGE FRLQUENCY OF OCCURRENCE OF SURFACE WINO DIYC IION VERSuS WIND SP[ UU'A IIAC FROM HOURLY OBSERVATION'.

AIR AAHER $ERVICEIMAC

SIATION NUMBLR: 11855 STATIONN 8A: FAIRCHILD AFO ., PERIOD OF RECOR : 75-84MON1: JUL HOURSILS|I: ISUO-170

..................°o.ooo. o .....................................°.o. o°.o..o.. ....... . °, .........~ .ooo.° .......................I wINO SPEED IN ANO1S

DIRECIION I 1- N-t 7-10 11-16 17-Z1 22-27 28-33 34-4D NI-41 48-55 (E 5b 1OTAL MEANIDAREtS) x wIND

.... .. o....... . . ... , ...... . ,. . ... .... o o ......................... .. ..... o o.o...........•........... .......... . .

N .B .8 1.8 .2 2.8 6.5

NNE 1.4 .6 1.8 .s 4.0 b.tC

Nr .9 .8 1.1 .Z 2.8 .6

ENE .1 1.2 .9 .1 2.5 b.I

S 1. 1.7 .5 1.5 8.1

EST .5 1.1 .1 1.. I.8

SF .6 .5 .1 1.3 5.6

SSE .6 1.6 .2 2.5 8 . I

5 2.5 8.? 2.5 .8 .1 9.? 5.5

5SW 2.0 3.3 4.2 1.3 10.9 b.8

SW 2.2 5.5 6.9 1.7 .1 16.3 7.0

WSW 1.9 4.3 5.2 1.1 .2 12.9 6.9

I 1.6 4.0 1.8 .8 9.8 6.3

WNW 1.0 .6 .8 .2 2.6 5.3

NW .6 .3 .6 .Z 1.8 5.8

NNW .9 .6 .3 .1 1.9 4.7

o..o ;oo, .. . o... . . . . . .. . . . . ....................oo.,.......oo..ooo..o..o..,o o. .. o . .o.. o.. ....... .. .... o.o.... .. .... ..VARIABLEI

CALM 15.0

OTALS 19.1 10.9 29.4 7.2 .8 100.0 5.4

.oo.......ooo ... . . + .......... .... ............... °.. .. ...... ... .. ........................... .. .. ..... .... .


I

LObAL CLIMATOLOGY BRANCH PLRCENTAGE FREOULNLT OF OCCURRLNCL OF SURFACE wIND DIRECTION V[RSJS N. SPECEUUSAfETAC FROM HoURLY OBSER RAIONS

AIR &EATHER SERVICE/MAC

STATION NUMBER: 721855 'STATION NAIL: FAIRCHILD AFB WA PERIOD OF RECORD: 7S-8MONTH: JUL HOURS(LSL): 18DO-2382

....... o............. *. °* ...... °......*......°........ .,.. . , ..... .. ° ..... °...... .... o ...... .. °.°. o .........................

I W IND SPEED IN RNOTS

DIRECTION i I-3 4-6 1-10 11-16 17-21 22-21 28-33 34-40 41-4) 48-SS GE 5b TOVAL MLAIDEGREESI I S % INU

.... ... . . °oo ~ *.. =,. ., .........Z... •... .. ..,........ .. ...... ,.......,........................................... .. o

N . .1 . .6 .2T. 4.

NNE 1.8 3.1 1.? .1 6 5.O

N F .9 1.I .1 .4 .1 b.D

ENE 1.0 1.8 .2 3.0 4.4

E 2.0 1.8 .2 4.0 1.'

fS I .S .1 .6 1.0

ST .9 .3 1.2 2.8

SSF 1.9 .9 .3 1.1 5.b

I 4.1 1.8 .9 .2 1.0 3.9

SSW 2.7 N.0 2.3 .1 9.1 S.1

5. I .3 2.8 2.7 .8 10.5 S.2

WSW 4.5 6.0 3.1 .7 .1 14.k S.1

w 3.1 3.3 1.4 .7 .1 .1 8.8 5.7

WNW 1.0 .8 .6 .1 .1 2.4 b.1

NW .9 .7 .2 .1 1.9 4.5

NNW .1 .0 .1 .2 1 . .4

VARIABLE

CALM //I/iI/j//t////i//I///j///II/II/i/ii/II//I//I 19.6 ////I

TOTALS 31.3 29.7 15.1 3.9 .3 .1 100.0 3.9

°°°........o....oo,......... °... ................. ...°°....o .... o..o.°.. .. ° ..... °.o. . .... °....... ...... ............... .°


I

iGLJBAL CLIMAIOLOGY BRANCH PERCENTAGL F$tJUENCY of OLCUfN(I OF SUPFAC WINE) % IELTION VO(95o INbU 'PL[USAFE A C f ROM OGURLf YbiRVAIIONS

AIR sIATHER SLRVICL/MAC

STATION NUMBLR; 12780S STATION NAlI[ fAIRCHILD AfB WA PERIOD Of RLCORD: 5-84MONTH: JUL HDUBRSLST); : u-2

3 00

........ ...... . . . • ..... •................... •...............° ........................... .......... ............ °....| 80 SPEED TN &NDIS

DRI[CIIUN I I-3 4-6 1-0 11-16 11-21 2- 23 N-ND 8-41 48-5 i[ 56 TOTAL HEA

ID(UPL[ I * MINL

....... ... .......... ..... ................. ............... .................... .. ... ..

NNF 2.? 2.2 1.0 .2 6.2 N.4

Nt 1.6 .T .2 .1 2.2 3.6

ENE 8 .6 .1 3.8 4.

L .8 .8 .1 ].? '.0

(SE .1 .2 .9 2.%

St . .2 .1 ? 3.

SSE1 I 31 .8 4.

S I 92 22 . .2.1 3.1

SSW 2.7 1.7 .6 .5. 4.5

S 6.8- 2.! 1 .08.

36UW 5.7 2.9 .3 .1 9.0 3.0

5.0 2.1 .7 .5 .9 3 -.9

6NW .2 ,1 .. . 1.I S.I

NW I . .. .6 3.t,

NNW .6 2 .3 1.0 4*9

.,. .. . . .. ....,..•...................... . ...* .* o..o.. .. .... .. .o..o.. o.... .......................................VARIABLE I

CALM ......../.../////ii/I///t/t/////i//II/iII iI/iI///i//Ii/I' 31.9 I//1/

T0TLS I 3. 5.4 19. . 2.1 00.0 2-q

II..... .. ... ..... .... ....... . ...... ... ..... .... oo...... ... ..... .... ......... .. o............................. ...


LLOAL CLIMAIOLOGl BRANCH PE RL I.NIAGE F RLQUENCY Of OCCURR-NCE OF SURFACE I IND OIECTION VERSUS WIND & PEEUUSAFLIIAC FROM HOURLY OBSERA AIDNSAlA AEATHAFA1 SERVICE/MAC

SIATION NUMBER: 727855 SIAIION NAME: FAIRCHILD AFB AA PERIOD SF RECORD; 7S-V4

MONTH: JUL HOURSILSI 1: ALL

.. .. . ... . .. . .. •.. .. .. .. .. ............... . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . .I NsINO SPEED IN KNOTS

U[IRECIIUN I - I- -tO 11-16 11-21 22-27 28-33 S4-40 4 1-4 7 8-55 LE 5b 1OTAL MEA(DEGREES) sI I IN0

N .. . . .1 .. 4 .. 7

N N t 1.8 1.8 1.2 .1 4.9 4.9

N F 1 .9 1 .8 1 .2 .2 5 .2 .)

ENE 1.7 .3 .9 .1 5.0 4.6

t 2. 3 1.9 .4 .0 4.6 1

Isf .9 .4 .1 1.4 3.1

Sf 1 .0 .4 .1 .0 1.b 3.1

SSE I.? 1.a .2 .0 1.1 3.6

S. I .2 4.5 2.S .4 .0 11 .1 4.9

SSW °2. .5 4.5 1.4 .1 12.H b.6

SW 2.1 3.6 1.9 1.1 .1 11.0 6 b

WSW 2.1 2.5 Z.1 .6 .1 7.1 5.8

,,2.0 2.0 1.I .1 .0 .0 %.% 0.2

u5 N .6 ..9 .2 .1 .0 (.1 4.8

N W . 5 .s .z -1 .0 1 . 1 1.()

NNW . .1 .1 .0 t9 ... ,

o.. . .. ....... ................ .... o.. .................. o o.. ooo. ..........................................................

CAiLM 2 / / / 0.B /11////

1O 1 AL 5 26. 28.6 (9. 1 4.6 .1 .0 (101.1) 4.

................ ,.................... , .... .,,o, ........... o.............,...... oo,............................ ...............

TOTAL NUMBER OF OBSERVATIONS: 72t2

S

bLoLIAL CLIMAOLOuY bANCH P t.t (A'L F5kt .U.N. G F 0L0 SUPALL .540 NI D0 [L05IO. VL"j"$ .4, -

A I k A 1" 11' S 9 14L. (LIMAL

ON*55 4 M t I f [Z: F2559 T41 510% NA IE: fA1 k4(IL0 AF7 W4 A PLP5000O 545 (L040 : 1 -4wMONTH :AU, HOU.OI.9 5: .j32-1 J

.lI5.( 515 I 5-5 4-. 53 595l 51-25 22-21 28-3 3 34-40 !-47 48b-55 GE 56 1DIAL "SAN

10[P t b F I IN

N I"t & .1 2.5 1.9

NF I .7 1.I .5 .4,5 5.5

5. I' 1.8 3.0 .9 .2 5.: 4.5.,-{

4 .1 2 .

S.F I .6 .4 - 2.5

I,[5.0r

.2 .5 .3 2.-3

I 5.9 5.5 .4 5.4 5.4

WNW. 4.0 5.l1 .5 9 . 4.2

.,SA 5.0J 4.2 2.2 .9) 9.4 5 .2

.8 5 .0 t.•6 5 .5 .4 1. • .l

abA 1 .9 .4 .5 2.1 4.4

- I 2.S 5.8 .9 5.,2 4.5

... .. .9 .5 .5 5.4 .4.

NA L 5 .2 .S 5.2

..... .5 .5 .s 5.5

10 5L I 2I.8 25. 09 O.1 595 500 0 2.t,

5:15*1 45,8818 05 0495 4,85 5049: 950

.,-- "

,LOdAt 0LI8'OLQOY F8491N9 PT3LfJ3A3t FkLRUtNCY OF OCT.URRENCt A SURFAF wINO UIRtIION VF RS .36.0 SPELUSA' [1AC FROM HOURLY OBSERVAIIONSA37 tAVH[8 S[RV3C[IMAC

IAIION NUMBR; 12785 STAT10% N497: FAIRCHILD AF B WA P1I 3IOU OF RECO0: 15-MO.NH SEP .40U95S(33: 351 31

.IND SPEED IN 8N0TS

dIACIION I -3 4 -6 7-10 33-1 37-23 22-2 28-3 14-47 - 241 28-55 07 Sb 30T4 1-7AN10[ ,RL t S) I .14ND

N ,I . S. .8 .2 4.0 5.'

NNE 3.9 3.6 2.0 .9 8.3 6.1I

NE .7 . t.1 I.9 3.7 7.0 b.8

CkI .8 :.4 .F .3 3.3 S.7

k .1 3.61 .6 3 .0 4.o

70 I .3 .6 .9 4 .9

SF I o . 2 1 3.0 S 9

$5.€ I .0 .4 .3 3.6 0.,3•

U 2.4 2.2 2.3 6.8 4.9

W 2.3 5.2 3.0 .6 . 3 30 5.9

I 2#.2 5.2 3.2 2.4 .3 3 7.2 1.4

S 3. . 1.0 2 .0 8.6 7. .

WNW 3.3 .9 .6 2.6 4-5

NW 1 9 .7 . .220 .

.N . . . 7 .1 3.8 3.8.

VA83A81! I

CAL-

OllL 21(.7 1 1 . b -l 9°8 lot S0, -.,

1lollA NUMB IR OF OBSERVATIONS: ",30

UL0'BAL CLIMAIOLOGY EiRAN(H PtRtIA't FkeutN(Y . OLLjt. . N Uf SURF ACE WINO U67I24 d190U0 ,IND 9PL[ I

USAF f; AC F koM ,GUwLY ORSU¥AT IONSAI. HA E kA SI8V ICE/MAC

SfAIION NUM9[Q: 727855 S f ION NAIE: FAiRC HILD AF B WA PERIOD Of RECORD: I -l,4MONTH: SIP HOURSF(SlF: 1:U-1.iO

[ .1N[) S PE[D IN 84010

UIIRECIION I 1 4- 1 1) 17 1 1-t I -Z 12-2 28- 33 14-40 41-k7 .8 -,5 u[ Sb T0tAL MEEAND[UR[F I I ,I,3

N . 1.3. . . . 2.4 s.8

NNF |.7 1 . 2.1 .2 0.7 5.I

NE 2.1 3.7 2 .4 .9 9.1 6.0l

IN! 1.2 2.1 2.4 7 .I 6.4 6.0

I I.i 3.0 .N 0.2 4.7

f .7 1.9 4.2

SF .4 .9 .2 l.6 4.0

S'F I .7 .8 .4 1.9 . 9.4

s I 2,.7 1.2 2.6 7.8 0.2

',',w I., 4.6 0,.3 2.1 .1 14.0 7.2

s .. D 2.8 .8 1 6. 0 7.

I. 1. 7 2.2 2.0 .2 7.0 8.

I 1.6 2.10 . 2.2 7.4 6 .8

40,. . I.' .2 .2 2.2 5.7.

NA .9# -4 1.8 9.•'.

448 I.. 1.0 ,l I.E 4.1

VA*vIAI I

101 ALS 19.8 32.0 29. 1 10.2 .9 10 r. 0 0.9

. ... ... .* .*.*.. .. .. .. .. .. .* . .. .. .. .. .. ...................... .*. .... . . ...... .. .*.*.......*...... .*. o * * . .*..... .. .. .. .. . .. . . . .. . . .. .. .. .. .. .. . .. . ..

IOL NUMBER OF B0SERVATIONS: 9JO

am, ,,I,,m - aim a

AUBAL CLIMAIOLOGY BRANCH PLRZLNIAG FREQUENCY OF OCCURRENCE Of SURFACE WIND ,Ik[LTION VL[Sit -1% .'Ll

USAFI TC FROM HOURLY OSURVATIONSAIR WEATHIR S(RVICL/MAC

STATION NUMALR: 72785$ STATION NAIE; FAIRCHILD AFB WA PLOS OF WICORD: I5 -.MONTH: SEP HOUJSILSI): JOg I-i.

............ . .......... •............ ............ .... ....... .. ...........**..........•..........................................

WIND SPEED IN KNO

DIRECIION 1-3 -b 7-10 11-16 11-Z 22-? 28-33 4-40 41-4? 4A-15 Ut 56 TOT -t AN

1OE[FREESI I % wIN?. ....... ........ * o* * . . . ..... : ..... . . ....... ..... .. ........... ................ ........... •...........................

N 4 .7 .N .1 I.? 3."

NNE 1.2 1.9 2.7 .6 6.3 b.f

NE 1.8 N.9 6.1 1.4 .1 14.6 1.f"

ENE 1.9 S.] 3.9 .7 11.6 t .D

2.3 4.7 1.0 .1 8.1 .6

EST 1 1.4 . 9 .2.7 57.A

SE 1.3 1.6 .3 .S 7.3 '.2

SSE I .I 1.1 .4 2.9 4.j

I 1.9 5.N4 .. . 10. S.6

I 2.3 4.9 S.8 1.1 14.l 6.6

Sw .8 2.4 4.j .8 .2 R .Z 1.9

WSW .3 1.1 2.7 1.0 .2 5.9 4.1

I 1 1 .6 1.3 .4 1.7 b.8

WIS I .4 .2 .2 .9 5.8

NY 4 6 .. 7 2.22

NNW .6 .6 4.m

... . o *o .. .......... .*......... . .... * ... ..... ............. ....... ..........o.... ~ .. ........ ...*o.... .... o..............RARIARFE I

IOALS | I8. 1 3 7.7 32.9 6.3 .6 1o0.0 5.9

..... ..... ..... O .. . o....... .....................).0........... ................... ...........................N.S:*9*


ULObAL CLIMAIOLOGy BRANCH PLRENTAGE fT'6EOUINCY OF OLCURRE NCL iF SURFACE wINO OIRECTIO0N v(9SUS .1ND SPE10USAFETAC FROM HOURLY OBSERBATIONSAIR fETHE R SERVICE/MAC

STATION NUMBER 721855 STATION NA4E: FAIRCHILD AFB WA PERIOD OF RECORD: 7S-84MONTH: 5EP HOUR(LSI): Jb:O-0UJ

WINO SPEED IN KNOT5

DIRECTION I 4- 8-6 71O 11lb 11-21 22-21 2a-33 8-NO 4I-k7 N-SS* GE 5b TOTAL MEAN4 D1 C LREE I wIND

... ,o .. .o. o ... ... , ,,, o .... .............. ...... .... ............. ... ,...........................o... ................

N .. .. .6 .1 I.C 4.0

NNE 1.7 e .1 1.1 1.0 5.9 6.0

NE 2.9 5.8 26 .. . 1 . 5.5

ENE 9.0 b.4 4.4 16.9 5.I

I Z.9 3.7 .9 7.4 48.2

ESE I .8 .' .1 ?.0 3. 1

sI I 1.4 1. 2.8 1.2

S-,E 1.8 1.4 .8 1.? 3.9

S 1.2 8.8 2.3 .2 10.2 4.7

SSW I .1 8. 5.2 I.I 11.0 6.6

sW .1 2.0 2.2 .6 S.1 6.8

WSW .Z . 1.0 1 .6 6.8

w .8 .2 .2 .9 8.1

WNW I .2 .1 7 4.8

NW I . . 2.0

NNW S . 5.0

IOTWLS I 23.5 35.8 20.? 1.1 .3 100.0 4.4

...........o...,.... .... .............. ..... ....... ....... °....... ....... , ... , ......... ..... oo..,.... ................

TOTAL NUMIE)L OF OBSERVATIONS: 9jo

I

6106AL CLIMATOLOGY BRANCH PtRLtNIAGE FREQuLNCY OF OLCURHENC3 OF SURFACI IN10 Ol lCIION VERSUS IN0 P(f ELUSAF IAC FROM HOURLY OBSRVAIION SAIR WEATHER S(RVICE/MAC

STATION NUMBLR: 727855 STATION 9840: FAZRCHILD AFP eA PORIOD OF 91COD: 75-84MO?5TH: SEP HOURS ILST I: 0300-0503

........ •...... .... . ..°, ..... ..... •.............. ••=... .......... ,................... °...°, ......................o..............

I OIND SPEED IN KNOTSOIRLCIION I 1-3 4-6 7-10 11-16 17-21 22-27 28-33 3q-4U 41-47 48-S 60 5b TOTAL MEAN

IaG5RE(S3 I % WIND

N .6 .1 .2 1.1 4.1

NNE 3.9 2.2 1.9 .2 R.2 4.4

Nu 5.2 1.8 .1 .3 .1 10.3 4.0

ENE 4.7 b.0 .7 11.3 3.9

I 1.0 3.3 .3 4.2 3.0

FOE .9 .3 I3.2 .S

%c 1 .0 .6 .1 1.7 3.3

SSE I 3.3 1.0 .2 2.b 5

S 2.a 3.3 1.4 .3 7.3 4.5

SSW 1.N 4.7 4.2 1.1 11.4 b.6

OW I 1 1 .4 1.6 .9 5.0 0.9

WW I .8 .6 .6 .1 2.0 .1

I .0 .4 . 1.6 5.4

WNW .2 .4 .2 .9 5.3

N W I .. 3 2.

NNW .3 .6 .3 .9 4.6

.... . •.o. .. . ........ ° .*...... ..... oo............°.. .......................•.... ... .......... ......................... .

TOTALS I .. 3 ?6.8 12.3 2.8 .1 300.0 3.3

....° ..... ...... ° .. °.,.. °. . ..... • .°. o .... o..°°*° ...... ,o....,.................,. . *,°.......... . ..... .. ° ......... o°*

3O1AL NUMBER OF ORSERVATIONS: 910

S

UL BAL CLIMATLOY BRANCH PLRCENTAGL FRLQUENCY OF OCCURRFNCE OF SURFACE wIND DIR[CTION VERSUS 4 INU SP If Uus AFE'Ac FROM HO URL y OBS ERV ATON Si

A I . .1 W R H R S E R V8 I C E I / "8

Sl8l1ON NUMBLR: 727855 STAION NAIE: FAIRCHILD AFb WA PERIOD OF RECORD: 75-84nON H SEP HURSLSlI) J9Uo-OOO

o° o o . o o . . .° . . . .. o . o o .. . , o , o .. . ..... ......... ,. ........ ...... o o° . o . . . . .. . o o .W INO SPEED 116 0NOT

UIRECIIUN I 1-3 4-b 7-10 11-16 17-21 22-Z7 28-11 34-O 61-47 48-55 GE 56 10 1AL fN

1016R EES) I I WIND... . . ,........ ... ..... ..., ... ....o, o ., o o .. .o.. .o.o .. ... o.o. .o.o... o ..................... . . . ... °...

N I 1.2 1.5 .3 2.9 1.8

NNE 2.9 Z.4 .9 .2 b.4 4.2

NE I 4. 2.9 .9 8.1 3.8

11NE 3.8 1.0 1.1 .1 .2 8.2 4.5

, 1- .2.5

ESE 1.0 ,II. 2.0

.4 ?

S F .1 . 1.8 3.I

S 2.9 2.7 1.O .2 6.8 4.4

5.W Z.2 2.8 2.4 7.0 9.4 ".9

Sw 1.4 1.0 1.2 .4 .1 4.2 b.

WSW 6 .9 .6 .2 2.2 b.0

W 1.8 1.7 .4 .1 4.0 4.1

WNW .6 . .3 1 .2 4.1

NW I . 5 .2 .6 3.n

NNW .7 .4 .1 1.2 1.5

.. °. . .° ... ......... ..... .°. . .° . o . ... .. ... ..°° .° .. .. . .. . ...o °.o........ .... o...............•.......VARIABLE

1OALS ; 26.8 21.2 9.4 3.3 .3 IO.O 2.8

oo°.............. . .° ., . o.. °o...... ...°. °°°° . .o.°. °.. .... °.oo°*o., ..... ° .. .. ° °.. °........ o.. ..... ........ °. , °..

IOFAL NUMBER OF OB$ERVAIJONS: 930

.LLOdAt CLIMATOLO0Y BRANCH PEALE tNTAGE FRLOU[NCY OF OCCUIRtlNCL UF SURFACE WIND 034tLTION VERSUS .INU "PL[u l AF EIA C FROM NO U RL 0 BS CR VATI ON S£34 *FAT7NIA 6(841C1/MAC

SIICION NUMALR: 727865 STATION NA4L: FAIRCHILD A1 WA P19100 OF 8ECORD: 76-A4

MONTH: AUG H3URSIL573: ALL

DIRECTION I 1-3 9-b l-10 13-lb 17-21 22-Z1 28-33 J4-O 41-47 48-55 GE 5b TOTAL M(%i4UEGREESI I INO

.o, ..... ~~~.... .. °o .° ...................... . . .. ° . .*. .. o . ., ............. , ...... o...o.. ........ . . . . . . . .N . 1.0 1.0 .. .. 2..4 4.2

NNE 1.5 a.8 .8 .1 .0 4.2 4.7

Nf I .1 2.2 1.3 .2 5.8 5.0

ENE 2-3 2.6 .9 .1 5.9 4.4

S 1.9 2.5 .5 .3 4.8 4.3

3ES6 .9 .6 1 1 .6 0.4

SE .9 .4 .1 .0 1 . 3.5

-S E I . I . 3 .3 .0 3.0 3.9

s 3.S .7 2.3 .2 JO.? 4 .9

S5 2.7 .8 4.S 3.0 .0 13.0 6.3

Ski 2.b 3.7 3.4 3.0 .1 30.8 b.3

US. 1.6 2.0 1.6 .4 . 5 . 5.9

A 2.3 2.3 1.2 .2 .0 .0 5.8 4.9

WNW . S . .3 .3 .0 3.6 4.1

N w .5 . .1 .0 3.3 4.4

NNW .3 .3 .1 .0 .8 4.3

. . .o .. oo................... ......... ......................,.....*.... ..... ...........•.......•.... ....................

I

II

TOTALS I2 .1 30.6 1".9 3.6 .3 .0 100.0 %.1

... *..* ........ o......, ....... ,....... o............ ..... oo......o....... . , ..... o, o,.......o,,...o .... ........... ..


GLObLA CLIMAOLOGY BRANCH PERCENIAGE FRLQUENC¥ OF OCCURRENCE OF SURFACE WEN RIrECIION VERSUS W3NU SPECEuUSAFEIAC FROM HOURLY OBSERVATIONSAIR WEATHEW SERAICL/MAC

51AION NUMBER: 727855 STATION NA4E: FAIRCHILD AFB WA PERIOU Of RECORD: 75-84MONTH: AUG H3URS(LSTI: 2100-2303

..... ... ..................................................... oo ... ...... ,.,. ,. ,,....... .. , ...... .................. .I WIND SPEED IN KNOTS

DIRECTION 1 2-3 4-b 7-10 31-lb 11-21 22-27 28-13 34-N0 41-47 N-55 UbE 5b TOTAL MEANI0ELRES) I I WIND

........ ... ....... i. ........ ;...... :;o ......... ...... ............. ,°... ...................•..............•..... .........°.....

N 1.2 .6 .3 2.2 4.2

NNE 1.2 1.7 .9 .1 1.9 5.1

NE .8 1.2 .N .1 2.5 5.0

ENE .8 1.2 .3 .1 3.N 1.9

t 1.7 .8 .2 2.7 3.7

1O[ .1 .U . 1.0 9.6

S .3 .4 .8 .5

SSE 1.4 28 2.2 3.1

S I 2.1 1.8 .5 .1 5.2 3.9

SSW 3.9 3.0 2.2 .8 8.8 N.9

SW 5.2 3.1 .8 .3 .1 9.5 4.2

WSW I 3 .9 .9 .2 .1 7.4 9.0

6 .2 3.3 .4 10.3 3.7

WNW .6 .1 . 2.1 3.7

NW 1l .1 .4 4.0

NNW .4 .8 .2 .9 3.b

E ° ., . . .. ,.,........ ................. ............ ........ .......... ....... ,........... .............. ............VARIABLE

CALM / / // / / ?,7 ////If

TOIALS 3z.2 23.3 6.7 1.9 .2 200.O 2.6

.. . .....°** ... .... ° . ...... ...°. ..... ........ * . ° .. °*,* ... *.*o*.o...°. ............... ........... .°..... °..........

0DIAL NUMBER OF OBSERVATIONS: 930

IF

LBAt CLIMATOOLGT BRANCH PLER'T AGE FRLQUt NCY OF OCCURRENCL OF SURE ACE WINO SIRECTION VERSUS sIND SPLE rUSAF TAC FROM HOURLY OBSERVAIIONSAIR wEATHER SERVICE/MAC

STATION NUMBER: 121855 S[ATION NAIE: FAIRCHILD AFA WA PERIOD OF RECORD: 75-84

MONTH: AUG HOURSILSTI: I100-2)0O... o* * . .. ...*oo~o *. ... o... ... o .. ... .. . o * . ..... ... .. ....................... ..............**.........*.......

.... INO SPCEO IN ANOTSOIRECTION I -i - I- Iil 11-21 22-?7 28-13 ON-NO 41-4? 48-SS GE 56 TOTAL MEAN

UEGREEtSII I :INO.o........ ......... .. *... o.... ............................. .. .... . ....... .. * o..o.. ....... .o.... ........ . . . . . .

N I .N 1.9 .2 3.5 3.?

NNE 1.8 2.7 1.0 5.5 4.5

NE 1.7 1.4 .1 .2 3.? 4.5

[NE 2.3 3.0 .6 5.9 4.1

L 1.9 1.5 .4 .1 4.0 3.8

[SE I . .6 .2 1.2 4.2

SE 1. .3 .1 .9 3.1

5S 1.1 .2 . 1.4 2.8

S 3.3 1.6 .9 .1 5.9 1.9

5SW 3.9 3.5 1.4 .5 9. 4.I

SW S.8 5.1, 2.3 .5 .1 1.8 4.9

WSW 1 .1 4.8 1.8 .1 .1 10.0 4.8

I 3.1 3.7 1.3 .2 8.3 9.6

WNW 2.0 .6 .4 .1 0.2 4.2

NW .8 .4 .3 1.1 3.4

Nmv .2 .1 .3

CALM ih1,/;/u/j///.8 //1//I/

TOTALS 33.2 31.5 33.3 3.4 .2 100.0 3.5

°.o.. o. ........ o ....o ....... ... .o .. **. o**.. o**....,...........,..... ............. o .. ... ... ,* **......... ..... o.....


GLOBAL CLIMAIOLOGY BRANCH PLRLNIAGt FRL(UINCY Of OCCURRENCL Of SU:FAC[ WINO DIrECTION AERSUS WIND SPEEDUSAF EIAC FROM HOURLY 06ERVATIONS

A] IR WEATHER SERVlCE/MAC

SIAIION NUMNLR: 121856 STATION NAIE: FAIRCHILO AF8 WA PERIOD OF RECORO: 1-14

MONI: AU6 10U 6LSI; 1500-1103......• ........ ....... ..... .... ........... . . o o .o .o . .. o o o .... o .. ............... o........... . . ........... ...

I JlND SPED IN NNOTS

DIRECTION I 1-I N-6 1-lU 11-16 17-21 22-21 28-33 3N-NO 41-47 48-55 GE ,b IOtAL MEANIDEUREESI I WINo

. ... 1. .. .3 . 2. . 9....6

NNE I .7 1.5 .8 .5 4.. 5.10

Nr 3 .6 1.0 1.1 .5 9.7 5.8

ENE 1.8 1.3 .R .1 3.7 4.3

L 1.1 1.2 . Z.6 4.0

[SE .9 .9 .2 1.9 3.8

SE .9 .5 .1 1 .5 3. 3

SSE .8 .9 .2 1.8 R.2

S 2.9 9.4 1.9 .1 9.4 4.8

SSW Z.3 3.8 5.1 1.4 1?.5 6.9

S W 2.5 6.6 1.5 1.6 .2 17.4 7.0

WSW 1.7 3.5 4.R 1.3 .1 11.1 7.1

I 2.4 3.1 3.5 1.0 30.0 b.2

Aw .8 1.2 .6 .1 . 2.8 5.8

N IF I 3 3. .3 . 3.3 4.6

NNW .6 .4 .1 .3 3.3 9.9

.. o. . o..... .... .. o........................... ..... . ..o o .. .... ....... . ...... o...o......o........................o....VARIABLE

CALM I 9.1 I ///f//

TOTALS 29.1 32.3 Z7.0 1.1 .4 100.0 6.4

-. . .......... o....o ..... .....o. o ~~ .o .. ......... oooooo.o.o.,.. ....... ......... o o .. o.o.,oo. ..... oo oo.....

TOAL NUMBER OF OBSERYATIONS: 930

W

GOAL CLIMATOLOGY BRANCH PLRLENTAGL FRLQULNLY OF OCCURRENCL OF SURFACL WIND DIRECION AETUS WIND SPLEUUSAFEtAC FROM HOURLY OBS [RVAIONS

AIR AFATH R SERRICEIMAC

STAIION NUMBLR: 72185, SAlION NAIE : FAIRCHILD AFO WA PLRIO. OF RECORD: 15-8MO NTH: AU U HOURSOILSII: 12UD-1400

....... •.....oo....o......o.o................ ....... oo o o . , . . . o .. °.............. ...... ........ ........... .. .......I WINO SPI[O IN ANOTS

OIRLCI3ON I 1-3 4-6 7-10 Ii-lb 17-21 22-21 Z8-I 34-40 41-47 48-55 O 5b TOIAL MEANID[GREFSt I t WIND

... o . ... . ,.o ,o° ,, o., ,,, . .. .,. ..... o ..... ,, ,.................................,... ........... . ....... . .. °N .1 1.0 .2 .4 2.1 4.7

NNF 1.5 1.7 .9 .1 4.2 4.6

NU 1.5 1.1 1.5 .2 4.9 5.

E I .R .5 .9 2.2 5.0

f 1.9 2.0 .b 4 .6 .0

ESE 1.1 .1 .1 3.5 1.4

SE .9 .4 .2 .1 3. 4.

SSE 1 .3 1.1 .8 .1 3.2 4.R

S 1.5 4.b 4.1 .1 12.4 S.4

SSW 2.8 4.9 1.6 1.6 .1 17.1 1.0

SW 1.4 4.7 7.2 1.9 .1 35.4 7.5

A WSW .9 I.T 2.9 3.3 .2 1.7

2 2.0 3.0 2.3 .4 .3 1.8 5.9

WNAW .T 1.1 .4 .32.1 5.0

NW .9 .6 .3 1 .8 4.

NNW -6 .4 .1 1.2 1.5

VOALE

TOTALS 22.8 31 .0 30.3 6.2 .4 1 3 00.0 5.4


I

GLOBAL CLIMAIOLOGY BRANCH PLR LNTAGL FRLUUENCY Of OCCURRENCE OF SURFACE WIND DIRECTION ViRSUS WIND SPLEUUSAFETAC FROM HOURLY OBSERVATIONSAIR [ATHER SERVICEiMAE

STATION NUMBLR: 727855 SIATION NA4E: FAIRCHILD AFB WA PERI0 OF RECORD: 75-84

MONTH: AUG HOURSILSTI: 09U0-1103....*... o..... .......... .. ...... ........ ,.......*.. .... . * * . ...... ... *..... ............. .... .. .... ........... ....

I d]NO SPEED IN 88015

DIRECTION I 1-3 4-b 7-10 11-16 17-?1 22-21 28-33 34-40 4 1-4 48-55 GE 56 TAL MEAN(OEGREES) II WIND

*................... ;..... :..... ... ......................,o =... ................... ...,. ° * * .. .... .o... . ..... .. ....... =..

N 1.0 .6 .8 .2 2.3 8.9

NNE 1.0 1.9 .8 .1 .1 3.9 5.4

i 1.9 5.1 2.5 .2 9.1 5.4

ENE 2.3 3.1 1.1 .4 7.8 5.1

t 2.2 8.3 1.2 .1 1.1 8.8

ESE 1.2 1.0 .1 ?.3 3.7

SE 1.6 .8 .4 2.8 3.8

55E 1.2 2.0 .4 3.1 8.8

S I 3.5 5.6 8.4 .3 13.9 5.5

55W 1.6 8.3 7.8 1.5 .1 19.8 6.8

s5 1.3 3.4 8.6 1.9 11.3 7.8

WSW .6 3 3.6 .8 .I %.3 6.9

A 1.0 .9 .3 .2 2.8 5.8

W8W .5 13 .6 2.8

NU .3 .2 .2 .1 .9 6.1

8NNW .2 .3 .3 .1 .8 6.7

VARIABLE

TOTALS I 21.4 39.1 26.3 5.5 .5 100.0 5.8


|-

GLOBAL CLlMROOLOGY BRANCH PLRCLNIAGL FRLUENCY OF OCCURRENCE OF SURFACE WIND DLR(LTION VERSUS WIND SPEEUUSAFETAC FROM HOURLY OBSERVATIONSA] a WE ATHER SERVICE/MAC

STATION NUMBER: 727855 STAIION NAlE: FAIRCHILD RF8 WA PERI00 OF RCCORO: 75-B 0

MONTH. AUG HOURSILST); JbOO-DOG

• .... •ooo.. ...... °°°o°°o°°°° ..... °........°.... ................ ,.......... ........ .•° .... ° ° ° , o ° °. ................ .°ooo°°o

SwIND SPEED IN 4NSDIRECTION I - --b i-I 11-16 31-21 22-?? 28-33 iN-MO Ni-i 4N-55 GE 5b TOTAL MEAN1OFGRCESI I S wIND

.. .. .. .. ...... °° °o .... oo .....o°•o ....... o • .. °.............. °.....o ° °° o ~ °.o • ° .°.........o°...... .. . .. . .. . .. . .. . .. . .. . .. .

N I .. 4 .7

NNE 1.5 1.5 .8 .2 4.0 5.1

NE 2.4 3.5 2.1 .Z 8.8 5.4

ENE 3.7 . .2 3.1 11.0 4.7

I 2.7 5.1 1.5 9.2 4.4

ESE 1.7 1.0 2.7 2.9

SE 1.3 .6 .2 2.2 3.4

SFE 1.6 2.5 .3 4. 40

S 3.1 8.9 3.9 .6 lb.6 S.5

SSW 1.9 5.7 6.5 1.0 £5.1 b.6

SW .8 2.9 2.5 .8 .1 7.0 1.a

WSW .2 .6 .4 ,1 I.N 5.9

w .2 .1 .2 .5 4.6

WNW -2 . . .4 M.0

NW .3 3 4.7

NNW I .1 .2 5.5

. , .. . . . . . . . . . . . . .................o....o.o...°.......oo..........°.o... ...oo .... .......... .....°... . .....°. . .°.o. . .WARIARLE I

CALM 14iii/iii /II///lji////tj/////j/jI///ijl/l///// N.6 /1///1

TOTALS I 21.8 38.0 22.6 2.9 .1 100.0 4.6


£

6LUbAL CLIMAIOLOGY BRANCH PLR.ENIAGE FREQUENCY OF OCCURRENCE Of SURFACL WIND UIR3CYION ERSUS WIND SPEEDUSAFETAC FROM HOURLY OBSERVATIONSAIR i[ATHER ERwICE/ImAC

STATION NUMBER: 738050 STAION NA4E: FAIRCHILD AFAW A PERIOD OF RECORD; 15-A.MONTH: AU NOURSILSI): 0300-0500

.... *,......o........ ,..... .. . ........... • ...... .. ° *.,,* ..... * . = .......... .**,......°.. °...... ..... **..........*°**..°

I AINO SPEED IN ANOTSDIRECTION I 1- 46 7-10 11-I6 11-21 22-21 ZR-33 34-40 41-.7 48-S GE 56 IOTAL MEANIDEbRES) I IIND

... ... ° .. ° . .. °..°... ....... : ..... ...... ....... *. .......... ...... ...... °.... ....... ,*............. ..... ..... : ... ....N ° 6 1.O .3 1.4 4.0

NNE Z.2 1.4 .b 4.2 1.9

NF N.2 2.S I.1 .2 8.2 4.1

ENE 4.0 3.4 .5 8.0 I.7

c 2.0 1.9 4.0 3.5

FE 1.0 .S 1.5 ?.v

1F 3.0 .3 .1 1.4 1.?

SSE 1.8 1.7 .4 4.0 1.9

S.0 6.1 1.1 .1 11.0 4.0

SSW 1.9 4.6 4.1 .6 .1 13.6 6.5

SW Z. 2.0 1.6 .3 4.7 b.2

SWSW -s .3 .2 .9 4..

W 1.0 .6 .1 1 .7 .8

WNW .I .3 .2 .I .5 7.4

NW

NNW .2 .1 .5 3.6

o..- ...- ... ...,.........o............... .......... ................... ..... ................ ...... .........................VARIABLEI

CALM 3//I//I/3///I/I//,// i/ /i,// ,/j/// j //, /u// ,/// ,/,/,// 33.9 i/l//

TOTALS ZS.6 21.7 13.3 3.4 .3 300.0 3.1

... . *.................... ..... ...... ............ . .rc ...

.o.. ..9

... .

...

*~

.6. .

.. * . ........................


I

GLOBAL CLIMArOLOT BRANCH PL IN I AGc FRLQUfNLY OF OLCURRENCE OF SURFACE WINO, OI4E(IION VLRSUS WINO S LL1USAFIA1C FROM HOURLY OBSRV6TIONSAIR WEATHER SERVICE/MAC

57610 NUMBER: 327855 STATIO NAMf: FAIRCHILD AFB WA PERIOD OF RECORD: 75-84MONTH: SEP HOURSILSII: 18IU-2000

....... .. ooo....... .oo............. . ,,=.. . o.. . o ....... ..... o...,o ..... .. o...... ...... .o=,.. . .............. .o. ooo.

| 4IND SPEED IN KNO5DIRECTION I 1-3 4-t 7-13 11-16 17-21 22-27 28-33 34-40 41-47 48-55 GE 5b TOTAL ME4IO[6REtSI I WINi0

........ o.o.. ooo.... ;: ..... ;: . ...... oo .o......oo..... ... ........................ ........ ..... ..............................N I .4 2.6 .2 4 .2 4.3

NNE 2.4 7.3 2.6 .3 12.7 5.1

NE I .13 1.6 .7 3.6 4.5

kSF I 1.3 1.4 .1 .2 3.1 4.4

E 1.8 .4 .6 2.8 5.1

ISE .3 . .4 3.0

I - .6 .2 .6 2.4

SSE 1 .0 .3 .2 1 .6 s.5

S 3.7 1.1 .4 5.8 3.3

5W 3.2 2.4 .A .1 6.b 4.0

SW I 4.6 3.2 2.0 .9 10.7 4.4

WS 4.6 2.6 1.7 1.1 9.9 5.3

A I 2.4 1.9 .8 .6 .1 b.0 5.3

WNW 1 3.1 .6 .2 2.Z 4.1

NW .I .2 .1 .4 4.3

NNW .3 .1 .3 .3 4.7

.oo~o --. . .o....... ...... ..... .. ..... o ... o............... .........o.......... ..................o....... .. ,............VARIABLEI

TOTALS 30.0 26.9 0.4 3.6 .1 100.0 3.1

.T.O . N o O... .o..O o........ ooo...B E............S..3...... o.. .0....0. . o...... ....................Uo.P.............U..OI

TOTAL NUFIBEA OF OBSERVATIONS:" 9"10

6LOdAL CLIMAIOLOUY BRANCH PLRCLNTAGE FRLQUENCY OF OCCURRENCE OF SURFACE WIND DiRICIION VERSUS .INU SPLE,USAFETAC FROM HOURLy OBSERVATIONSAI RwEAIHER SERVICE/MAC

STATION NUMBLR: 727856 STATION NAIEl FAIRCHILD AFB WA PERIOD Of RECORD: 1-A-.MONTH: SEP HOUQSILSFI: lIU3-IO0

. ..... .. ..... *..,*.. ...... ,............ • ..... .**......** ..... **,,..... ...***...... ..... *.... .................... ,......I WIND SPEED IN ANOTS

OIRECIION 1 -3 4-}b7l-) 1I-16 11-Z Z2-ZI zR-TI 34-4D 41-47 4A-SS GE 5b TOTAL MEAN

IaE5REES) I I wIND..... ........... .o . ...... .. ......... ... •..... . .. .......... ... .... ....... ..... .............•.....•.... ............... ....

N 3.9 2. .2 5.1 4.0

NNE I 1.5 3.1 2.0 .1 b.6 5.4

NE 2.1 3.2 .4 . 6.1 4 .6

ENE .7 Z.3 .6 .1 1.7 5.1

E .9 .9 .1 1.9 3.5

I S .2 .2 e.5

SE I ' .6 1.2 1.I

5SE .A .6 .1 1.4 1.5

I .4 2.C .7 5.1 4.1

SSW 3.0 2.0 1.6 .R 1.3 5.I

SW 2.4 1.9 .4 .7 .1 S.b 5.2

NSw 2.4 2.1 .9 .1 6.1 4.7

4.8 3.6 1.9 .4 .1 10.R 4.8

wNA I*] .7 .3 .1 2.2 4.0

NU .1 .4 .2 .8 5.4

N4 w .4 .6 .2 1.2 4.2

VARIABLE I

CALM Ij/ii//i/i/tiiiii///it///i////I//i/iti/I//ItI 6.4 /1/Ill

TOTALS 241.1 26.4 9.7 2.9 2 300.0 3.0

TOTAL NUMBSE OF OBSERVATIONS: 930

.L3bAL CLIMAIOLUY BRANCH P[PRAN|AGL FRLQULNCT OF OCCURRENCE OF SURFACE .I8 OIRECION VERSUS .1NU PEEDUSAF LTAC FROM HOURLY OBSERVATIONSAIR EAIHFW SRVICE/MAC

STATION NUMBER: 127855 STATION N4E: FAIRCHILD AFB WA PERIOD OF RECORD: 75-A4MONH: SEP HOURS(LSTI: ALL

I WI18D SPEED IN AR0ISOIRECTION 1 1-5 4-t 7-10 11-16 17-21 22-27 28-13 54-4D 41-4 48-55 GE 5b IOTAL MEANIDELP EEST I z WINU

ooo o... . oo o .o........ .... .. .. .. ......... . .. o.....o. . ooo........o....... ............ ........ ,........... o .5. I .0 1.2 .3 .0 2.0 '.2

NNE 2.1 3.0 1.9 .4 7.5 0..

HF 2.7 3.4 2.0 .6 .1 8.7 5.4

FNE 2.1 3.7 1.7 .3 .0 8.1 5.

1 1.8 2.0 .5 .0 4.3 4.1

ESE .8 .8 .1 .0 1.1 1.4

SE .8 .7 .1 .0 1.7 1.6

SSE .1 .8 .2 2.? 1.8

S 2.7 3.1 1.7 .1 7.6 4.1

SSW 2.3 3.9 3.5 1.1 .0 10.9 6.5

5w 1.9 2.6 0.2 1.2 .1 9.0 6.9

WSW 1.8 1.7 1 .6 .8 .1 5.6 b.6

I 1.1 1.7 1.3 .6 .0 5.4 0.8

WNW .6 .6 .3 .1 5.6 4.7

NA .4 .1 .1 .0 .8 1.9

NNW .3 .5 .1 .0 .9 4.1

VARIABLE I

CALM / 21.9 III

TOALS I 23.9 29.8 18.8 5.2 .8 100.0 k.1


- -

.L0881 CLIMAIOL06Y *tJNCH P tHNIAGk FRt[NUfCV OF 0CURRLNCE Of- SURFACC A 1 OCkEL TIO VjASJS IND0 SP~ff)USAf E T AC FROM HOURLY OBRSRVTIONS

AIR .LATHINB SIRVICI/MAC

SIAIION NUMBLR: 1?78SS STATION NAqt: FAIRCHILD AFB

WA PERIOD OF ACCOROD: 15-8M ONTH: 0C HOURSILSII; 000-0200

| w1ND SPE[D IN ANOTS011LCIIQN I - --b F-Ia Il-16 11-21 22-21 aR-SI 34-40 41- 4d A-S5S 61 Sb TOTAL MEAN

IDof ERE I I WINO. . .. . .. .. . .. . .. . .. . .. . .. °.o. . . .. . .o... . °.. . .. .. .. .. ......... . .. .. .. ..... . . . .. °.o.. .. . .. .. .. .. .o. .. .. .. .. .. .. .. ... .. N I .9 .8 .8 .1 2.5 5.2

NNE 1.2 .9 .1 2..4 4.1

N, " 2.b 1.6 .4 4.6 3.1

EN! 3.1 6.0 2.0 II.? A.R

II1.3 1.1 .8 2.9 4.4

[SE .5 .4 .2 I .2 1.6

SE .9 .1 .1 1 .1 2.6

SSE 1.8 .2 .3 z.3 4 5

S 2.9 3.2 I.? .1 8.0 4 . T

SSW 1.6 2.7 4.5 1.5 10.3 1.4

1 .2 1.4 2.2 1.0 5.1 1.3

WSW 1.0 1.0 .6 .1 2.? 5.4

I 1.6 1.1 .4 5.I 3.6

WNW .6 . .3 .3.5 5.2

4W .9 .6 1 .5 3.5

NNW .3 .6 1 1 .1 4.4

• . .. . .. . ... ... •°........ .... •......•....................o............. ........... ......... ..,............ .....* • .. ......RARTABLE I

CALK 30 ].1 lll

TOTAL% I 21.1 23.1 14.8 2.8 .1 300.0 3.2


I

(,LOb AL CLIMATOLOGY BkANC.1 P I L tNYAt GLFR u[7NC1Y OF OCCU4111CL UF "U" A,, N1St r.3dt N4 V I INb 'pt t

USAF L YA C FROM0N (U RL, GasF84Arlo4S

I A I .. A7HIR SERVICE(/MAC NI

,IAIION NUMBER: 7278S5 STATION 4t: FAIRCHILD AFB WA P19100 OF Rtco4..: 704.M0O.TH: 0CT .OURSILS03 JI7 -O

DIRECTION I I - 4-6 7-10 11-16 11-21 22-?? 28- 3 347-40 4 1-4 1 4h-S0 Z.[ bb TOTAL WtIS

.. .. N .. . . .. . .0 ... . .6 ... . .4 .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . ... 01 . . 4.6

FINE 1 .7 3 .9 377 7.7f

NE I 37 2.?7 .8 1 7.t

ENE1 I .1 0.8 ?.0 .1 11.1 4.7

E 1.7 1.7 1.1 .1 4.b .

E1SE .8 .2 1 .0 '.b

5SF I .6 .5 .4 .2 2 .8 0.

S 2.S 1.3 1.3 .1 7.2 4.6

SSW .4 3.9 3.9 3 .4 9.6 7.5

Sw 1 .0 2.0 2.5 1.1 6.6 I.1

WS .6 .5 .8 .3Z. b3

1 3.6 .8 .3 2. . 7

WNW .1 .8 .'9 4 .4

NW I .1 .2 .1 .4 4.A

NNW -Z. .6 .9 4 .4

T0TALS 193.7 27.4 13.5 3.3 100.0 7.3

T0TAL 4044318 Of 0853188811045: 930

6 LUb*La CL IMAITL)LOGY U6BANC4 PLa.tNTArN t I E$LtJUcNLT Of OLLUR8[NCL OF SURFIICE IIND &IRkiLCTION VERSUS sIN. )PtfUUbl IC FROM HOURLY 0S RVAI ONS

A81 I EATHEA StIAVICt/MAC

AT1AIO NUM~t8R: 121455 YATION NAME: CIRALCHILO AFe WA PIR6O3 oF RECORD: /9-8.

MONIH: OCI N)UPS(LSI: jtU -0boj

I .. NO SPEE. IN KNOTSUIRLCIION I -5 4-6 ?-to Il-lb 17-?3 .2- I 28-31 14-0 41-I1 48-55 OY Sb TOTAL MEAN

..............~~~................. ....=.o.=....................... °....o°............ ......... ;. . ...... . .. . ......

N . .9 . ... 4 .6 .9 %.T

NNE 2. e 2.9 1 . 9. I .?

NY I .I 1.2 7 Y.R 4 .8

N 8.a 6.1 1.1 .7 1 5.9 .21

I 1? 2.9 1.3 .8 6.8 1 .9

T SP I I.1 .5 I.8 Z.6

51 I 1.6 .8 .3 *2 .9 1.2

SSE 1.6 1.2 .6 1.4 .1.1

S I .. 9 9 .5 .6 9 .4 S9.'

SSW I .9N 3.s 94.2 1 .1 10.2 6 .9

sw I 3.3 I 3I. 3.9 .6 .2 .4 71

Ab S 1 .6 .1 3.9 6.

II.8 .9 .3 1.1 1.9

89N I .1 .1• .6 1 .2

WNW I .. 8 .8 .4

NNW I . .1 .3.9 1.8

.. . .* . ... ... . . *.. .. ................ . . ... .. . . . . .,.,.. . ... .. . .o..,.*.,,. .*.*.o . .. .. .,..... . . . .o*.*..... . .. .. .. ... .. . . .. . .. .. . .. . ..

CALM ,//////// //jt//t//I/////I///I/ /////// //////////I///2//I/J//i2/22///I/ / 25.5 I/I/I

TOTLS I 2.5 29.5 3 l. 2.7 .2 300.0 3.8

. ...o,, ..., .. ., , *. .. .. .. .. .. .. ...................... .,,*...*..*.*,.,**.,*..,. .o .* , .... o,**...** .... ... .o. , * .* . .. .. ... . . .. .. .. ... . ..

IOTAL NUMBER OF OBSENVAIIONS: 91o

S

LO8AL CLIMAIOLOGY BRANCH PLRCLNIAGE FRLQU[NLY OF OCCURRENCE OF SURFACE ;INO0 IWECTION VERSUS MIND %PE[uuSAFET C FROM HOURL¥ OERVIAT1ONS

A:: WEATN[R S[RIC[jMC

5I3ON NUM ER: 127855 SIATION NAlE: FAIRCHILD AFB WA PEIO0 Of RECORD: IS-84MONTH: OCT HO 5SI.53S3 19U0-IlOJ

..... ...... o.. .... o... ....... I ............ .. . . . .o o . o .. . . ....... . ..o .......... ..... ... ........................

.... ND SP[ED IN 840T5UIRLCIIUN I 1-8 4-6 7-10 11-15 17-21 22-27 28-33 34-40 4 1-4? '8-55 GE 5b TOTAL MEAS

IEL.81.153 I ZX b.o................. o o .. ,... .. , .° ,.... ..o... ...... o, ..o. , . °. . . . .... ° . . . ....... ,. . . . . ........

N I .5 .2 .. .0 . . ;.4

NNE I 3. .S I .0 .2 4.1 .S

N I 1.6 5.3 3.5 .5 10.8 6.3

ENE 1.8 1.5 4.6 .5 I'.5 S.9

3.1 .5 1.9 .1 1.b 4.1

ESE .5 1.1 .2 1.8 4.5

I .9 3. .5 2.8 4.7

5S, .9 2.4 1.3 4.5 5.

S 3 3.1 $ . 614 .0 S.9.

5SW 1.4 4.3 .. 5 2.1 .5 13.2 .0

SW 1.2 2.9 2.9 2.0 .2 9.2 7.8

WSW .5 .9 3.6 .9 S.9 7.8

. I 5 .8 .3 .2 1.5 6.1

848 .4 .2 .1 .8 3.6

N I .2 .2 .2 .6 5.I

NN .2 .4 . .4 4.8

.. o . ..... °..o.... .. .... ....... ............... ........ ...... ........ ......... ........ .... .............. .......... ..VARIARLE I

CALM I i i//i#jjl/I/ /Jj////jj/IjI///ij/IIII1j1/III///I//I/I 7.7 IlI

10A15 1 38.3 37.1 27.5 8.8 .8 100.0 S.8

TOTAL NUMER OF OBSERVATIONS: 930

I

LO iAL CLIMA1OLOGY 8ANCH PiI[ NTAGL FPIQUE NCY OF O.CUUORtNCE 0F SURFACE WIND DIRE[CTION VERSUS WIND %PtE.JAF I AC FRJ4 HoU4U1 0SERATI ON SA£34 IATHf R dRVICE IMAC

SIA .O NU 101: 127856 SlA101, NAI[; FAlRCHILD AFA wA PL]00 OF RECORO: 15-84

ONTH : 0 1 "0U993 9I " : 12UO-1400..... ........ .................. . . . . .. o o° . o.... °...... . .. ............. ........ .... °..............°......... ..

I mI1NO SP1EED 34 840O39

11IC I 3-3 "-6 7-10 11-1b 17-21 2?2-27 28-3 3 -4-40 .- 4. 1 48-5b G 0b TOTAL ML:A,U[GR[ EtS)1 |

61 Jh. .. .. . . . . . . . . . . . . . . . . .. . .o . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . .

S .7 .5 .9 . 2.9 9. 4

NNE ?.9 1.95 1.1 .6 7.3 5.1

NE 2.4 S. 1.8 .s 9.b 9.0

[14 I .7 3.0 2.5 .2 1.4 5. 7

I 2.3 ,'.O 1.3 .3 5.7 9.o9

9F I } .0 .6 . .1 2.0 9.6

S1 .5 .6 .3 I.3 9.0

SS1 .S .8 1.2 .5 3.0 1.

. 4.4 3.2 .3 9.S 6 .0

SSW 1.8 4.6 5.9 1.8 .2 .1 14.1 1.

SW I 5 j.S 5.9 4.7 .5 36.0 y.3

WSW I.4 3.1 3.9 1.4 .2 6.0 8.0

I 3.3 2.0 .1 .1 4.5 5.4

WNW .5 .2 .4 1.2 4 .

N .4 . .1 3.1 5.

JN1w . .3 .2 .6 4.2

.. .. . ............ ................ °.............. ......... °. .. .......°°............°............,..............°..8883*811L I

10TALS 1 1.4 33.1 27.4 10.% 1.0 .1 00.0 t .0

TOTAL NUMB 1 OF OBSERV0TIONS: 930

I

LLObAL CLIMAIOLOGY BRANCH PLRLLN5AGL FkLwutNCY Of OLCURRENCL Of SURFACL WIND UISALTION VERSUS hIND PLLDuSAfLIAC FROM HOURLY OBS[RVAT1ONS

AIR klAHfR SEPVICE/MIAC

ST]ASON NUMBLR: 727855 STATION NAit: FAIRCHILD AFe WA PERIOD UF RECORD: 7S-84MONTH: OCT HOuRS(LST): ISLOIIJU

........ *........o..................................... .° ° °. . .°. . o . .. * . . .o. . . . .o. . . . . . . . . . . . .I ]IND SPCLO IN A NOTS

UIRECTIUN I -3 4-6 7-ID 11-b 17-21 22-27 28-33 34-40 1-47 48-55 GE b 10TAL MAN

NNf 2.9 3.8 1.5 .2 .1 o. S .8

N I 2.1 2.9 2.2 .2 8 .0

NF 1.9 5.9 .9 6.1 7 .6

I 1.5 1.0 .3 2.8 3.?

f5 I .5 .N4 .1 .1 3.9

S 1.8 1.9 1.9 .2 1.8 S.2

511 I 2.9 4.4 5.6 .9 o3 1 .5 t.8

SOO I .9 9.1 8.8 2.5 31. 7.5

wDV 1 .4 1.8 5.2 1.2 .2 7.8 5.6

I 2.2 1.8 1.2 .1 .2 5.7 5.6

NW 1.2 1.2 .8 .z 5.5 6.2

NW .6 .1 .1 .9 5.8

NNW .8 .5 .2 1.5 5.?

o. . .o , ,.... ,........•.........................o. ... .... .. ..... ........ o................ .......... ,........................VA..TA8L I

CALM 14.1 /II1/////l/i/I//II/II/I2I// 12212i111111//II 19.1 Ill/I

TOTALS I 2S.8 SI.r I 2. 5 S.1 .1 IU.O 4.9

II

........ oo.. .. a.......................... • ...... o o o o............... o... .......................... o.. ............ •

TOTAL NUMBER OF OB5 fRVlT[ONS: 930

UL bAL (LIMAIOLOU 8A N1M PEQLNTAUL FRUIIU(.3Y OF OCCURRENC[ Of SURFACI.3wINU UIRFLTION VtWuS .N14 S LUfIUSAF La FROM HOURLY 0bS RV1 IONSA3 I l a . i AH fRVI8LL /MAL

SIAIION NUMB[ R: 27805 SIAIION NAl: FAIRCHILD AFa WA PlOt Of RECORD: 15-84MONT": OCT 8U0,3LSTIT: 1KJ3-23D9

............. i........................................ o . . . . . . . . ......... •................. •...........................l.11N0 SPE[D TN KNOTS

18W6 lIION I I-3 4-6 1-ID I1-lb 11-21 22-?7 28- 33 4-40 41-41 48-05 0 Sb TOITAL .4ANSoE ,Pt [SII iN

... . o. . ... , o .. .. .. .. ..... ..... .. .... . .... .... . .............. .... ................................ .......

N . . .0 .2 .I 2.7 3.9

hNt 3.11 3.5 1.0 1 3.6 4.4

Nf 1.3 .2 .3 .5 4.0

FNF 2.5 2.2 1.2 .1 5.9 4.5

K I .8 1.0 .2 3.0 3.1

[FE . .3 .9 3.0

sI o6 .4 1. 3.1

0,! I .6 .4 o4 3.5 4 4.

S 3.9 3.0 .5 .3 7.? 4.0

558 2.7 4.2 3.5 .4 .1 8.9 5.2

I 2.? 1.9 2.0 .6 .7 .. 15 6.0n

WSW I 2.5 2.3 1.4 i.i 3.0 0.9

2.3 2.0 .6 .3 0.7 4.4

WNW .9 1.0 .3 .1 2.0 4.3

NW .0 .3 .1 3.0 4.2

NNW .2 .4 .6 5.2

VARIAKLF I

IDEALS 7 2 1k 26.1 9.6 1.2 .3 .1 300.0 3.1

. ... ... .. .. .. . .. . . .. .. .. .. .. .... .. . .. .. .,. ... . .. .. ......... .o... .ooo . .. ..o. .. . .. .. . ... .. .. .. .. .. .. .. . .. . . .. .. . . .. .. .. . .,..

TOTAL NU8. OF OBSERVATIONS: 910

.a==,

uAL LOAL CLIMAIOLOGY 3,ANCH PPIN .NTAG[ FVRt uE"NCLY OF OCLUkI(NCE Of SURFACE .1INDD IR1CT[ON W[ FSLJ. IN 's.IN PEtUUSAF I C FROM HOURLY OBSERVATIONS

A|1 LATHR SERVIC.IMAC

STA|TION NUMBER: 721805 STAIO NA41: FAIRCHILD AFB dA PCIOOO F RCOR : 75-by

MONTH: OCT HOURSILSi; ll00-21W j..... ,..,.. .... ......o,................... ....... ....... •... . ,. ................. o............. *.......•.....................

I =siNO SPEED IN ARO0TS

DIRECTION I I-I 4-6 1-10 11-6 17-2 1 2-Z7 28-03 34-40 4 1-47 48-R5 GE 5 1 TOTAL 4

AN,

IDELPEESL I N X . l.. . .... , °.......... •...... ....... ..... ..... ..... ..... ..... ..... ............... . . . .. o ............... . . ..... .

N .3 .9 .1 l.1 4.4

NE 2.T5 2.7 .6 S . b .2

(NE 2.0 4.1 .8 6.9 4.4

E .9 1.1 .6 2.6 4.b

Sf I .3 .2 .5 3.0

Sf .9 .2 1 .1 2.8

s51 1 1.0 1 .1 .2 2 .3 4 .0

S.3 . 1 . 1 .3.7 5.I

W 2.5 3.9 2.6 1.5 1.4 b.2

!W 1 .A 2.4 2.2 .6 7.0 b.0

WSW 1.6 1.2 .9 3.7 4.4

I 8.2 2.5 .5 .1 7.3 3.5

WA .9 .. . .1 1.9 4.0

NW .2 .8 .1 1. 3.9

NNW .8 .6 1. 0.9

. .. . . . . . . . .. .............. .° .. . .. . . . ...oo ... . . . .. . .. .. o.. .o.. .. ... .. .. .. .. .. .. . .. . .. . . .. . .. .. .. .. . .. . . .. . .. .. .. . .. .. ..

TOTALS 2.O z I 7. . 3 2.7 100.0 3 . I

.o.o. .,.. .. ° .. ... ............................... .,. , ..... ... .,,.,.,,.o.,°... .,. .. .°,.,.,. .. . .,...,.o.°°.,.. . . .. .. ... .. .. . .. ... .. . .. . . . .. .. .. .. .. ..

TOTAL NUMBLR OF OBSERVATIONS: 910

bLObAL ILIMATOLOIT BRANCH PERLENTAGE FREQUENCY OF OCCURRENCE OF SURFACE WIND DIECTION A IVESUS WIND SPEEDUSAF 3 TAc FROM HOURLY OBSERVATIONSAt AI IATH I, S IRvICEIMAC

STATION NUMAER: 7278S9 STATION NAIE: FAIRCHILD AFb WA PERIOD OF RECORD: 7S-8.MONTH: OCT HOURS L ;STI: ALL

. .. .. .. .. .. .. .. .. .. .. .. . .. .. .. .. .. .. .. .. .. .. .. .. ...... .. ... .. .... . .. . ... . .. .. .. .. .. . .. .o. o. . .. .. .. .. .. .. .. .. ..t WINO SPEED IN ANOTS

JIRECTION I 1-5 4-6 1-10 lI-lb 11-21 22-27 28-33 34-40 41-41 N8-55 b 5b TIAL MEAN

T1)LRELDt I I w IND

N . 1.0 . .3 . . .0 2.1 ..

NNF 2.I Z.4 .7 .3 .0 S.4 4.%

Nt 2.1 3.2 1.5 .I 7.1 .

INE 2.5 9.9 2.2 .1 9.7 5.1

L 1.9 1.7 .9 .0 4.9 '.

[Sl .7 .5 .1 .0 1.1 3.t

STb . .6 .1 1.4 1.6

SSF I .9 1.2 . 1 . 2.6 5.0

S 2.6 l.8 2.2 .1 R.Q S.?

S W 1.R 3.9 1.8 3.9 • . a1 1 .. 0 1.0

SW I 1.6 2 .9 1.1 1 .6 .2 .0 9 .0 1.'

WSW I .1 1.2 1.4 .6 .I 4.4 h.7

1.9 1.4 6 .1 .0 4.0 4.5

WNW .6 .6 .1 .3 .0 I. 4 .b

NW . .4 .4 .1 0 .9 1.9

NNW . .9 o1 .9 4.0

RARIARLE I

CALM I 2/I/I/t/I/IIIII/t///I/t11//II//IIIII/I/Itt 4 .8 Itl/I

TOTALS I 22.6 2s.2 1 1.9 .0 .9 .1 100.0 4.3

II TOTAL NUMBEP OF OBSERVATIONS; 1440

.LOAL (L]MATOLOUY b3ANCH PIRILNTAUL F t1(u[NCY OF OCtURR[NC JF %SJFAC[ WINU LIfLTIION wjNS&, LNU.1 4 P tJ)U',AfE I A f Ro H 0U kL Y OBSURVATION'

AlI Rt s A H E , 1 lv l'C t /M A( CTA[I10 N NUMeLR: 127655 SIATION Nilt: f3A8IWCH( I fi MA P E 100 OF RECORD: 1 -8

MONTH : N 0 V H31 ,1L> I j3J0)-I2UJ............. ............................ . . . . . . .. . . . . . . ......................................................

I .140 SPEED IN 115103

0)INtC I1 I -3 4-6 1-10 l1-I-o 17-21 Z2-7 26 -3 34-4) k1-41 48-S, UL Sb 1OTAL t1A3NI36[if 4 I I m NO

. -. .. . .3 .. 4.?

Nf .8 2.! .b .4 .2 7.1 0.5

I '7i 5.3 .a 1.0 .o 11.9 b.5

IN 3 2.8 4. 7 2.4 .s 3 .2 5.'

t I .1 3.3 .6 4.0 3.1

[S I .6 . .8 2.7

St . .1 .. 3.7 3.?

003 3.4 1.4 .8 .1 4.? 4.6

4 3 3.9 3.8 2.? 3.4 .4 .2 3.6 4.1

NS . 4 .7 .2 . 2.? 1.3

* I .6 .4 .1 .3 3.8 0.8

WNW .3 .4 .I .7 1.3

N4 .2 ,3 .3 . 4.0

NNW .6 .4 .3 3.3 3.4

............ ... .. .. ... . .. .. .. .. .. .. .. ................ o ... .. ... ...................................... ... .. ... .. ...

... ... ... ... ... ... ... ......... °.....................

II

TOTALS I 10.7 21.0 2U.- 1.8 1.0 .r00.0 4.

107TAL NU B8 J OF OBSERVATION .; 10

1,LUtA CLI4A1I6O7Y BRANCH PCR- tNIAGL PLQUtN(.Y OF OtCdRN[NCt 3F SURFALt IND U IRlkTION v45u5 IIN, ',P;fL,USAF tT aC F Ru" Ho U RLY Vosi( RIA I ION S

',70;.N N "ImLR: 721855 IrA1ION NAIL: F A7(H]LD A8 bA P1[IOu RE 8C70: 75b4

MONTH: NOV HO U LSt 7: 7UJ-u bj ,

I a.1N7 S7'480O IN 4NO070

(()'I) IIUN I -I u 1 -0 7 -1 1b 17-21 22-27 Z8-33 14-40 4 -1 4 48-55 6t 56 TOTAL 4:'

I11461 Al, I A X .IN f

4 . . . . . .. . . .8. .

111 1 12.7 4 5 .11 1 . .1 772

N I I 1.1 . 1 22 . 2 70.71) .8

I 7.8 7.4 .4 .

I,1 . .0 7.7 3.7

9 1 .9 74 b6 . . .

0 7 .1 1. 9 3.9 .3 .3 9.4 y .7

.4 I .6 7.4 2.6 2.7 . 7 7 7[4.2 9.k

%. . . .4 . . . . . . .4. .7. 7

644l | F I . .2.7 4.

N. 3 .3 .4. .

N I I

I7L8 I A' 8.8 2$b.? 27. E 3 0 7. .1 -03.3- 5.

Sf A L ....................................

107*1 N0MRLP OF 78578yA770N0: 9377

ULOtIAL L IMII OUL. Y bk4(5H .I,.N I(,L fI ktQI6l Y ,F OLCURLN(L JF SU4FAL. bIND iII[L T N V47,5 I .ANu Pfi(tAlI I OM *G"IJWLY OB ,EQ 1ATIONSA I 1A3IHI7! PtkVI(L/MAL

A ION 5119566'P Il'4 I5A4317(% N44 ~f oA 1 1A ii I A4 Pt6PI O0! C, f H I c : Q 'L-P1MONTH: D[C .iUoLi, , I S I I A: 1! J:-iJ j

l.1N0 SP6({0 TN p3N315

I1Pk C TI UN I - 4"C 1-1l LA-1 b 17-21 2,-2 1 28-33 34-4U 4 1I-47 48- (5 GA 50 1 I h 4 A' N9I D[ UN[ ,A I A L[A'!

N 9.A 7.0 .5 .A 2.7 '.9

N5t I .9 :. 1. .1 11. 4 1

N F 19 1. L. 9 9. .

[Nf 2.2 2. .0 .2 5.6 .6

I 1.4 I.? .1 l.I .4

I I 1.0 .5 .2 A.? 7.0

SI .6 .4 .N .4 2.3 b.

51 I .6 l.A .1 -1 2.7 t.2

S I 1.6 1.0 1.5 .6 .A 6.9 6.1

354 I .4 2.5 3. A.?1 1 1l].2? 9.!9

SN F A.]] .9 A.8 A.) Aol .6 1.1 AA .5

WOW I .6 .9 .9 .2 .7 2.7 0.4

- A-! A.? .4 .3 4.1 5.!]I6 I .1 .N .1 1. 1

WNW 11 .4 . .s .

NW j .,2 .1 .I -6 4.5

NN . II.6 4.2

C A I6 t9 I.1 f/f i44u74,61(tI

10 T L S 20.b 2%.b 1t 3 6 3 2.9 .6 10{0 .0 4.1,

103At N 1M ALR OF 0BSRVWATIONS: Y3O

LLbAt CLIMIOLOuY bkAN CH P L1 1 I RE 1 ;Ut N( I Ut 0t(JP6[NC[ F SURFACE IN[) IRE& I 1ON V LWuS u .1 %II- t r

-~# " AlII C I ko.1

Ho k LYV OBSF1VAT I N

A811 iA.A7Ht 5. Sf1VCL/HAL

,1AIION NUM8LA: 12195 S|AIION Nail: 1 1.1-, W5 8 ItuLOD Li 6tLU8: I-6i

MON: 01 O0 LSI I: I S3-IIDJ

I wINO 0811) D % E NOIS1) 18 1 u9 P I -3 t, I-lU Il-lb 11-21 /2-2 1 28-33 34-43 4 48 - iI -50 LE 5b ItI & I'" ANI Lhf LEs I S I % WIN)

. . .9 .9 .6 2.4 9.3

NNE 5 . u 4.4 2.9 .2 10.0 0.1

Nf 1 .9 3.9 2.3 1 .4 1 0.0 s .6

IN I 2.7 3.0 3.0 .2 8.0 4.8

S I 1.4 1.0 .2 I.1 *.4

1[ .s .0 .3 1.4 4.6

5[ 1 .4 3.0 .2 .2 2.8 4.0

0S0 1.1 1.2 1.2 o1 .1 .1 1.8 0.4

S.I1. 3 .8 .0 41 7. 4.

sW .4 1.8 3.8 2.7 1.3 .. I1.s Ii.J

W I .8 3.1 3.4 1.9 .8 .' 1.2 4.4

WSW .9 .1 3.b .5 4 .3 .1I

* I .4 2.6 3.0 3.2 .b 4.2 6.5

WNW .9 .4 . 1.6 F.0

NW 5.8 .04 . 3.3 4.2

NNW .8 .4 3.2 1.4

.. .. .. .. .. . o . . . . ............................................................................. ... .. ........ . .VAWIA(It[ I

10 18A I 23.3 S a.4 18.6 9.0 2.5 .6 . 0.7

T0TAL NUMBER Of OBSERATIO3NS: 430

UL06AL CLIMATOLOGY BRANCH ?LA.LINfA( [ IR:AuENtT ,I 'J CL .&F f'd ANCL J1I ,C1.N I ION V*ALI N( 9 IN, AtEUSAFETAC f RUM HUtjV V UO ,ItWATlONSAIR .F ATH(A S8VAICL/MAC

SIAT ION NUMBtP: 727854 STATION NAIL: FAIN(HILD ALA bA P 1 4100 Gf wtcjg: 74-eH1)0%1.: 0 I H IJ u;kI ST I: 1 ?U2-Il]

wI NU S PL[ ITN NvUI',

DIRLCTIuN I - '-b 7-10 1I-Io 1-21 T_ -?7 8- Z 45 4 41-47 44S ut b1 IU ITA: L

. D.. p f. I z .

NF . .8 .1 1.4 4.4

Alf I 2.4 5. . .6 1. I. r 6.7

I 2.5 4.6 2.7 .2 1 0 .2

t 2.0 1.1. 31

st I .. 8

? 1 .5 4.0 2.5 ,8 -1 4.8 6.1

SSW 1.3 2.2 1.7 3.3 1.4 -2 12.0 10.1

S .8 1.6 1 1.5 .8 .2 7. 11.1

V I 1 0 1 .b . 6 .2 * 2 . 2 4 . 4 8 . 4

INW .5 .8 .2 .1 1• 4.1

8NW .3 -4 .6 .1 1.9 6.2

ARIAL

TOTALS 19.0 31.7 19.8 1.4 3*1 .6 10.UG 4. 1

TOAL NUMMBER OF OBSERVATIONS: 930

a

... ...... ..... ... ........... .. . . . . .. . . . . . .. ... . . .. . . . ..................1... ., j . . . . .o. . . . . .

- 5),, 3 ... Ao'73: jS,,o-31jrAI N11- 1 I ' 4' I I lI*) N II%

It T I k I A IPP

. .. .. .. .. .1 .4 ..4 ....

I~~ ~ .4 2. 03'1 7

..8 . . 1.I I1.

I .1 2.1 .1 .1 ... 5.

I I I I 18 I I I I I ,8 .7 I I I I1 ..4 .. .

10TALI I .3 .< .. .0 5.8

IO7L IIlMAtQ OF O8SlIV8AT10 431i

ULUBAL C[IMAOLDUT BRANCH P PLCNfAOE FAE UUENCr (If OCCUR(,'C. Of SURF ACT RND DTRECIlON IVCRSUS d1I NO SPEEI(USAF AC FAU" HOURLY OBSRVATIONSAIR CIATHER SERVICL/MAC

STATION NUMBER: 12855 STATION NATE: FAIRCHILD AF a PERIOD Of RLCORO: T5-NMONTH: DEC HDURSILSIT: obUD-OOJ

.. . . . ~ o , ......................................... .,,, .................................................... , , ,l wIND SPEED TN KNOTS

DIRECTION 1-3 4-b TAD I0 l-lb 17-21 22-21 28-33 34-40 NI-T MR-55 6 E 5b TOTAL MEAN

IDfuQETSA I I wIND.. . o ° oo ° .. .°............ .......... .............. ............ .......... ................. ........ ........... °....

N I .R l.1 . 2.2 4.

NN( 2.6 4.5 1.6 .2 .3 9.2 5.5

Nf 2.7 4.. 2.8 .6 10.5 5.5

ENE 1. 3.8 1.9 .1 8.8 4.7

E 2.7 l.T '4.0 3.0

(SF I .8 .2 .6 T.2

SI .S .6 .1 .2 1.5 5.b

SSF .R 1.6 .3 2.7 4.S

2.6 3.? 1.7 .6 .2 .1 8.9 t.2

SSW 1.1 2.3 2.6 3.0 .5 9.8 9.2

SW .6 1.2 3.3 2.8 1.0 .3 .1 9.4 11.2

WSW .3 .4 1.0 1.2 .3 S.2 '.8

W .6 .8 .3 .1 l.A 5.4

WNW .2 .2 .3 .8 5.0

NW .8 .2 .b 1.5

NNW .4 .5 .1 .1 1 .2 '.9

.. .. . ........ o......... .. °................. ,..... .... ,....o..........°.. .......... . ........ ,............. ...............RARTARLI

CALM Z /////// / ///jj/////t///////////j///jj/jIII//II/j//I//t/iIIIII/II//I//// Ill/Il/l / 25.1 I//ill

TOTALS I9.8 2b.8 1b.5 9.0 2.8 .4 4 I 100.0 4.9

....... •.......o,......,.......o,......o,........... *o ....... ,,, ..... ...°* .,.... • .... . ,, ............*........ ,o....., ........


I

Fa

b1U0AL CLIMATOLOGY BRANCH PL R'fNIAtj FWtUENL Y OF OCCURENCL OF SuRFACt EI0 1 RE CTION VERSUS .INb SPE[b USAF1AC FOM HOUkLY 08!ERVATIONSA1 ;AffHfR SE8VIC(/MAC

SIAIION NUMBER: 721865 STATION NAIL: FAIRCH1LD AFB WA PERIOD OF RECORD: 1S-84MONTH: D[C HOU8S2L61: OiUO-06J

. . .. . . .. .. .. .. ... .° . .. .. .. .. . .. . . .. .. .. .. .. .. I.. .. .. .. .... ....... .°. .. . . . . . .. .. .. .. . . . . .. .° . ., ... . .. .° .. .. .. .. .. .. .. ...1N0 OPL[D IN 8N026

I)2CIION 1 1-3 4 -t 1-10 11-1b 17-21 22-?7 e8-33 34-4u 421-41 48-55 U[ 6 IOAL ',AN4D(EREfS) I I uIND

.. .. . .°, . ... .... . ... .. o . .. . . .. . . . . .. .. .. .. .. .. .. .. . .. .. . °. . ... . . . .... .. . . ..... . . ...... . ... .. .. ...N I .4 2.5 .6 .1 2.1 6.3

NNE 2.b 3.9 1.1 .8 .2 9.0 b.4

NF 3.4 4.2 2.1 .2 I0.S '.9

[NE .2 3.fl 1.2 . 1.4 4.6

L1.8 2.3 .2 2.4 4.4

(s . . . 1 1 2.1 4 .2

SE .9 .4 .1 . 1.6

SSf.9 2.1 .. . .b S.0

S I 2. 3.0 .9 1.3 . 8.U b.0

SSW .9 2.6 3.7 2.2 2.0 .S 11.8 13.6

s I.3 1.3 2.2 3.2 1.0 .5 8.9 11.9

WSW .4 .6 . 2.1 .3 ?.8 0.2

1 1.0 2.4 .5 .1 .1 3.2I b.

wNW . .I ] .1 4.

N I . .6 o2 2.0 4.9

NN .2 . .2 .6 4 . 3

.... ,.,...... ,, ......... .. . ........... ........... .. .............,,..°. . .......... ,............. ...... ,.........,..... . .. o

881AUMBE I

CALM |I/j /1/IiiI j jj,//12/ii i//ii /ijj/Ii/i/jijI/j/,III//,,I,1i12i///I iiI//Ji/,//i/j/ItI 26.6 //l/l

TOfTAL I 28.1 26.4 26.3 9.0 3.1 2.2 200.0 6.2

IOTA.. 6U4B(R 0F 08S(RVAT2ONS: 930

bLUdAL CLIMAIOLOGS BRANCH PERLNIAGL FRLQUENC OF OCCURRENCL OF SURFACE IND OIRELCTION VERSUS WIND SPEU

USAFEIAC FROM HUURLY OBSERVATIONS

AIR W!EATHER SERVICLIMAC

SIATION NUMBER: 7?7855 SIAT10 NAIE: FAIRCHILD AFB WA PEIOU OF RECORD: 15-84

MONTH: DEC HOuRS(LST); 3Jd0-0200............. i......................................................... ......................................................

I WINO SPEED IN KNOTSDIRECIION I 1-3 9-6 7-10 1l-lb 17-21 22-27 28-11 4-40 41-47 48-55 bE Sb 10TAL MLANIaER E[S I WINU

.................. o...................°.... .... ... ....... ......... ....... ......... o...... ....... .. .................. .. o...N I .0 1.5 .8 3.2 4.7

NNE 1.8 5.2 1.8 .3 .2 9.4 s.4

NE Z.5 1.0 1.7 .2 .1 1.5 S.1

N 1 3.0 2.6 1.2 .2 7.0 4.4

L 1.6 1.1 .1 3.0 3.7

ESE .6 .4 .2 1 4 .0

Sr .6 .5 . 1.5 4 .4

5S 1.0 1.0 1.D .2 .2 1.3 b.?

s 1.6 2.4 2.4 1.5 .2 8.1 7.4

SSW 1.0 1,? 2.2 2.3 .9 .4 8.4 10.0

SW .8 3.0 2.8 3.7 1.9 .2 10.1 11.8

WSW .3 .9 .S .6 .2 2.4 9.0

• .6 1.6 .5 .2 .3 1.1 b.)

WNW .3 .8 1.3 4.0

NW .. .2 .2 A 3.!

N W .1 .5 .1 .3 4.8

.. *.. *. .. oo * ..... * ......... .... .... *....... o.......o............o........o.......... ...... *.......,..............

OTAL5 I 37.5 24.3 16.1 9.2 3.9 .b 00.0 5.0

&I

.......... ., .o*.. ... o... . ,,, . ...... .. .. .o..o . o**.......... o.. ,o...*.......... ***.......,......o ........ .**** o .

IOIAL NUMBER OF OBSERVATIONS: 9$O

LLOBAL CLIMATOLOGY BRANCH P[KLN AGL RLQULNLY OF OCCURRE NCL OF SURkACE wIND UktClION VECISUS WIND SPEEDUS4FE C ACFROM HOURL bS RVATINSAIR WEA THER SERVICL/MAC

S 0ATION NUMBER: 727855 STATION NAIE. FAIRCHILD AFI WA PCRIOO OF RECORD: 75-84

MONTH: NOV H3URSILSTI: ALL............. o.... ........ o...................*................ ..... ............. =.. * ...... .......... . ........................

I mWIND SPEED IN NO1S

DIRECTION 3-3 4-b 1-10 11-16 31-21 2z-? Z8-33 14-40 q1-'. '.-55 C[ 56 TOFAL M4V(OD6REESI I WIND

.... .... ...... . ...... . . .•..... ..... ....... .. ....... ............. ............... o......................... 1.0 .6 . .1 34 43

NNf 2.1 3.4 2.2 .7 .1 .0 8.5 6.1

NE 1.9 5.2 3.4 3.1 .2 .0 12.1 b.7

f- hE 2.5 4.1 2.4 .4 .0 .0 13.0 5.3

1 1.9 1.7 .6 .0 4.3 4.3

ESE 1 .0 7 .2 .0 2.0 1.9

SI 1.0 .8 .1 .1 2.3 4.6

SSE 1.3 1.4 1.3 .2 .0 4.0 .5

5 2.0 3.8 3.0 .9 .0 .0 .0 9.8 6.3

SSW 1 .2 2.6 4.6 2 3 .5 . 1.3 8.6

Sw .9 1.6 2.5 2.4 .1 .3 .0 7.8 9.2

WSW .6 .9 .8 .6 .3 .0 1.3 1.7

S.7 .6 .4 .4 .3 2.3 6.7

WNW .3 .1 .2 .0 .8 5.0

NW . .3 .2 .b 5.1

NNW .2 .3 .3 .0 .7 4.3

. ** .. * ....... .....**.............. ......... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8AR1ABLE

CALM 183.6 l////

TOTALS 18.8 29.3 22.3 9.4 3.4 .4 .0 300.0 5.3

........ ..* .o.. .. ........... ,............ ....... .o.. , ...... ,....... .... ... o ..... ................... .......... ..... ....

TOTAL NUMBR Of OBSERVATIONS: 71V9

4P

6LObAL CLIMIIOLOSY BRANCH PERL3NIAUL FREQUENCY Of OCCURRENCL OF SURFACE WIND OIRECTION VERSUS WIND 5PuUSAFIT A C FROM HUUPIL¥ YBSE AVAT IONS

AIR WEATHER S[RVICE/MAC

STATION NUMBLR: 127855 STAION NAIE: FAIRCHILD AFB WA PERIOD OF RECORD: 75-84

MONTH: NOR HOURS(LS1I: 21U0-230J

f W ND SPEED 19 ANoysLIRECIION 1-3 4-6 7-0 11-16 17-21 1 2-27 28-33 34-40 41-4I 48-5s SL Sb IOIA L MEAN

IFtE ESI I W WIND.. . . . . ...... ooo oo ...... 9 ...... ; ..... oo; ............ ......... o ~ o o o o o o...... o o o oo....... •......... .. .. ................... o ooI. I .8 .9 .2 .1 3.0 3.6

NNE 2.4 3.4 1.7 .6 . 8.2 5.b

NE 2.6 4.6 2.7 1.2 11.0 b.1

[E 2.7 1.1 2.3 .2 9.5 5.I

I 2.1 1.0 .3 3.8 1.4

[S .4 .8 .1 2.3 3.?

S f 13.0 .2 .2 1 .4 3.7

SSE 3.2 1.7 1.6 4.4 5.4

S 1.9 Z.r 3.0 1.0 8.6 b.4

SSW .9 2.6 4.7 2.8 .9 13.3 8.9

Sw .7 t.1 2.3 1.8 .2 .3 6.0 9.1

WSW .9 1.4 .9 .4 5.? 1 6. 0

.9 3.l .0 3.3 4.2

WNW .7 .3 .0 3 . I

NW .3 .2 .6 7.2

NNW .6 .3 .2 3.1 3.7

..... oooo ooooo ..... ...... .oo .oo ..... ........ .oooo ooo .o.oooo .ooo ...... . ......... .. .oooo .oo .ooo .ooooo .......... ....oooo .. ...ooooooo

VARIABE I

30O81'L 21.7 26.9 20.6 8.1 ,8 .3 300.0 9.3

tOTAL NU118CR OF ORS(RVATIONdS: 930

..I" ..r=

GLOiAL CLIMAIOLOGY BRANCH PLHNt AGC FHLQULNCY OF OCCURRENCE OF SuRFA"F WIND DIHILTION HflN,) AIN, 'irus AFETAC FROM HOURLY OBS[HRATIONSA IR ,C AT HE R BS R lICL / M A C

ON81]0N NUMBLR: 12785 STATION NAIL; FAIRCHILD AFB WA PLR00 OF RECORU: IS-84

MONTH: NOV 13RSTL STI 1i3-)3....... o . ... ooooo.. ............ . . . . ........... .. . . o o o o . o....o.....................o.o........ ................

I WINO SP(EO IN ANOTS

OITECIIUN I 1-3 4-6 1-1O II-1 11-21 22-27 28-33 3N-N0 4-7 N8-S5 GE 56 lOTAL :LI

IO[1REFSI C I 0 IND

.... ... °.o .... ... ............ .ooo ..o o.o.. oooo......................o .o~.................•.......•..... °..... .. ....N 1 .7 .6 2.2 2.8

MN! 2.7 4.0 2.8 .1 .1 N.9 5.5

NE 1.8 5.1 2.2 1.0 .1 1.2 6.1

CNE 2.6 4.1 1.8 .b .6 4.8

t 1.1 1.1 .N 2.9 4.0

[SE .7 .4 .2 1. 4N.j

Sr F . 1.2 . I. , .4

SSE .b 1.0 .9 2.4 5.t

S Z.b .6 2.2 .8 9.5 5.8

5sW I 1.6 2.6 3.8 2.8 .9 .2 11.5 9.1

W I 1.2 I.4 1.? 2.0 . .I 6.8 N.H

idS w 1.0 1.6 ,9 .2 3.? 5.N

I 11 .9 ~ 4 .2

IR.1 .2 .3 .9 4.5

NW .1 .2 .4 4 .8

NA .3 .8 .1 1.2 4.

o. . .. * . . . . . . . . . ........................... .. ... ..............o* .* o o ~ o o o o o ~ o o . o~ . .............*..... o.o..oo....o...........

CALM ...///lj j/ ...... .. 1// 4.9 I /// j///////////d//i/ 24.9 /1111"

1O1ALSL I. 201 28 18.0 6.9 I*4 .3 100.0 N.h

oo. o ....... *.....o....... ......... °. * .. ..... .o .o*..o ...... .. ........... ooo .o. .* o. . **......*.. oo* ....... *....... .*

IOTAL NUMBER OF USERVATIONS: 8W9

- I

ULOBAL CLIMATOLOGY BRANCH PLRVANA6L FRIFUtNLY OF OLCURRENCL OF SJRFAL[ WIND DIRECTION V[RSJS IND SPELuUSAF(TAC FROM HOURLY OBSERVATIONSAIR CEATHER SERVICE/MAC

STAT ION NUMBER: 72855 STATION NATE: FAIR(HILO AFB WA PER1O0 OF RLCORO: 15-8MONTH: NOW HOURSILSI: 15UJ-170D

......... o.... °. .......°....................................°............... •........................................ .... oo

I WINO SPEED IN KNOTS

UIWLCIION I I-S 4-b 7-TO l|-lb 17-21 22-27 28-Ti 34-No I-N -48-5 ., St TOTAL MiAN(OEGREiSt I % wISU

....... °................. °o ....... ..oooo oo .... o ° °.. ..... °°°°°........°......°.......o...................°.......°........° ° o

N I I.W .7 .1 1 2.6 4..

N 2.6 4.0 2.9 .7 .1 10.2 6.0

6! 1.0 .. 2 2.9 1.3 .2 1.1 6.?

EN! 1.8 5.1 ?.1 .1 9.1 5.2

I I.1 1o1 . .3 4.0

fs l 1.4 .6 .2 ?.2 3.5

sf .8 .8 .6 .2 2.3 S.S

S51 1 .3 I.Z .B .4 T.8 .?

S Z.6 5.1 2.2 .4 10.3 5.4

SS 1 .2 2.4 4.4 2.0 .3 .3 10.8 8.7

sw 1.0 2.4 2.9 2.3 .2 B.9 8.1

WSW .7 1.1 .8 1.0 .1 .1 4.0 8.0

I .7 .4 .4 .6 . 2.2 7.7

WN W .3 3 1 .8 4.0

NW .2 .2 .4 7.S

NNW .2 .0 .6 6.8

BARIABLE I

CALM / L lb.8 f/////

TOTALS I 18.4 32.2 21.8 9.2 1.1 .4 1o.0 5.4

...°. .. . . . . . .. . . . ....................°o.°........o.o.....°o° .o° ° .. . ...................... .....o°.........................


I.

|a

6LObAL CL[MIOLO Y BRANCH P19C ENTAGE FREu[NCY Of OLCURRfNC[ UF SURFA3. IND 0 1ON VERUS *lNJ PEEUUSAf ETAC FROM NOURL9 S 0E5VA1I0ON T

A1k ..fATH6R S(R9VII[MAL

S A ION NUM LR: 7218S STATION NAi(: FAIRCHILD AFB WA P L10 OF RCOAG: Is-69M NTH: NO 0 1 O1 R 4L 5 1 1- ] ? 0-14[}J

............. ..... o.o.. ........................... oo.. ... .. , .. . .•. . . . . o o o .... ..oooo ..o o.............o.....,.....

I wiND 596310 14 kNOTS

0IPLCIION I 1-3 4-6 7-10 11-6 17-21 22-21 28-33 34-40 41-4? 48-55 b[ 5b TOTAL mE&N

[UtRE(SI I W rIND.. . oo o oo....... ... ...... ...... ..... ..... ..... o ...... ..... .... . ..... ............ o o.oo....... o....... , o

N . .2 .1 1.1 6.1

N N f 1.2 2.6 Z.1 1.1 .1 1 1.1

NF 1.1 b.0 5.6 2.3 .2 .1 35.1 7.5

tAt ,.0 1.1 2.7 .8 .2 9.3 b.3

S2.4 2.1 .9 6.0 %.2

(SF 1.1 .( .( 1.9 I.I

Sti 1.1 .0 .1 .2 2. 4.1

SS1 I.0 2.2 .8 .6 9.6 b.I

S 1.8 .? 3 .1 1.6 .1 33.9 6.9

S S w.I 9.3 4.2 1.9 .4 .2 32.0 8.0

5w .1 1.1 1.4 4.4 .4 .2 .1 I0.7 10.6

8W! .1 .1 1.2 .7 .1 2.9 9.5

I .q 3.4 .4 1.6 .1 9.2 9.4

WNW .1 .6 .6 .2 I.9 .2

N .2 .2 .2 .7 5.2

NNW .2 .1 .3 5.3

oooo... . o . o........... o.............oo.....o.........o.................o..ooo .... ..oooo. .. ....ooo o o o o . ..o.. ooo........ .o

8A*I*BL1 I

CAM R // / .1 iI11

TOTLS I T5.2 31.7 27.0 15.1 2.1 .7 .1 100.0 b.8

o o .. . . . . ....... ...ooo ooo oo .. 0 . .. o..... . . . ......oo ° .. . ....o...o ... o o..o......... o..... ..... •...........°.......

TOAL NUMBER OF OHSERVATIONS 9)0

0t, US A t CLIMAIOLO Y BR UANCH Pt LLNTALt FRL ULNLY OF OCCUR[NCL f URIFAC[ WIND DIRECTION v([SUS mINuj SPLEUUSAF L TAC FROM HOUR LY OBSERVATIONS

A I .[I7HER %FRVICt/MAC

SIATION NUMBR' 727@5% STATION NAIE[ FAIRCHILD AfB WA PERIO0 OF RECORD. 75-84

MONTH: NOV HOuR'8LST): 0900-110)......... ..... ... . oo. .. ... .. . .... .. ............... ...... .. ... .. ,. ... ...... . ...... ... .. .. o. . ,.... ... .. o. o . . .... ... .. ....... .o .oo. .. . ...... . .. I. .........oo. .. .....

IWIND SPEE0 IN AN075

0IR [ION I -I 4 b -10 1 1 -I 17-21 22-27 28-33 34-40 4.1-9? 8-55 G6 5b TOTL MEAN(0(1.81 SI I o 1

... .. .. .. .. .. . .. . . . t.. .. .. . . .. .. .. .. .. .. .. .. .. .. .. ........ . ...o . ..... . .. .o o o. .o. ... .o.. ..... .. .. .oo. .. .. .. .. .. . .. ... . .. .. .. .. ..

..6 .8 .1 .2 I. 5.2

NNE .8 2.9 2.4 1 .0 .3 7. . 7 b

ME 1. 5.1 4.4 1.7 .3 12.9 1.2

f 16F 2.9 5.1 4.0 .9 .1 15.0 6.1

I 2.8 1.9 .9 .1 6.? 4.1

157 I 2.8 1.1 .7 .I 1.9 4.9

Sr

1 .2 1 .0 .7 .1 3.0 4.9

SSE"

1.1 1. 1.6 .2 4.5 5.b

S 1 .9 3.6 1.9 1.1 .2 .1 0.8 1 .I

55 1 .6 2.1 1.7 2.6 .6 .2 10.9 8.8

SW.b 1.7 2.7 2.6 .2 .2 7.9 9.5

WSW .2 .8 I.U .7 .4 1.1 9.8

S .6 .6 .7 .B .1 2.7 8.5

WNW .1 .1 .2 .4 6.0

NW .1 .3 .3 .8 5.7

NN I .1 .1 .2 . b.1

o ;oooo. ... o.. o... . .... o..o..ooo........ .. ...... ...........o... .......... .......... ... ........ o..... ....... . .............

CALM18 180.7

TOITAI S 16.6 30.6 27.2 12.1 2.Z .6 .1 100.0 b.1

TO

6LOBAL CLIMAIOLOGV BRANCH PIRLLNIAGL FREQUENCY OF OCCURRENCE OF L UPFAC[ NO VIRfLIION V S, .INu (PttuUSAFE ATAC FROM, HOURLY OEB8RVA1IONSA IN WE[ATH SERVIC(IMAC

STATION NUMBER: ,77855 SIAIION N80: FAIRCHILD AFB WA PERIOD uF RECORD: 15-64

MONTH: NOV 9OuQ SLSfJ: L G,-0 60)

I wIND SP0ED IN KNOTSDIRECIION I-5 4-6 7-10 I-Ib 17-21 22-27 28-33 34-40 41-47 4b-55 (A t1 TOTAL t 1 ,1OfI5 IE [S1 I N,

. .. ...... . ... . .... ......... ........................................... ............................ ..

NNE 1.7 4.0 1 .8 1.0 .2 8. b.4

NF 2.4 4.9 4.1 1.3 .2 * S.0 E

EN 2.2 5.6 1. 7 .3 ..4 ,9

L 2.0 1.3 .8 .l 9.5

ISE .3 1.1 .3 1.8 5.1

SE 1.0 .4 .1 1.6 3.6

SE I1.b 1.0 1 3 .2 . 1 .1

S 2.2 3.1 2.1 1.3 9.1 6.I

SSW 8 2.1 6.0 1.6 .4 10.9 8.5

S W 1.2 1.8 1.9 2.4 , 1.4 8.4

WSW .8 .7 .8 .8 .7 1.2 1.8

I .6 .6 .3 . 3.6 4.9

WNW .3 .1 .4 1.8

NW . ,3 .1 1.7

NNW . .4 2 .

... ...... .. ~ ....... •...... ............. .......... o..... .. o.............................. ......... o..... .............

CAL- Z1. 1111

T01ALS 18.6 27.6 71.9 9.2 1.7 100.0 5.0

.... .,. ....... , ... ..... .... o . .. oo ..... o.o.o.....,..,.. o....... .. . o ....... .. o ..... .ooo........ ............ ..... .

IOIAL NUMBER OF OBSERVATIONS: 930

I

GLOBAL CLIMATOLODY BRANCH PCERCN T AGE RLOUE NC Y Or OCCUR RE NCE UOF ,URF ACE WIND D1IRECTION Af4SUS .IND) SP E UUSAITITAC FROM HOURLY OBSERVATIONSAIR WEATH[R SERVICE/MAC

STATION NUMBER: 7278SS STATION NAME: FAIRCHILD AFB WA PERIODJ OF RECORD: TsN-AN

MONTH: DEC HOURSILSTI: 2100-230J

I -wIND SPEED IN V(HOTS

D' ICTION 1 1-3 4-b 7-10 11-16 17-21 2 2-27 28a-33 TN-N40 4I-41 98-5s DI Sb6 IOTRE MEANIDE6REESI I t wINj,

N -.B 1 .1 .9 2 . S N.~

NNE 2.7 4.2 2.6 .2 9.7 5.1

NF 1.0 2.3 2.1 .6 .1 6.2 7.0

ENE I 2.0 1.1 1.1 .1 6.9 4.6.

L 1 1.9 1 .3 .4 1. 3. 7

1S u .5 .2 . 3 1. 4.5

Sf I 3 .2 .2 .4 1 .2 7.6

SSE 1.1 .9 .B .3 .1 3.1 5.8

S .5 3.9 29 1.3 .T9.1 6.7

SSW I 5 2.6 2.2 2.2 1.2 .1 .1 A.A 13.1

sA I Z1 .2 1. 2.6 1.4 .4 6.2 13.7

ASW I 5 1 .0 .6 .9 1 1.1 8.1

6NA .8 .5 1 . 1 .2

NA .1 . .2 1 .4 1.2

NNW 4 .2.6 3.17

. ..........................................................................

TOTALS I 15.8 24.0 15.3 A.? 3.0 .6 .1 100.0 4.7I

..................................................................................

TOTAL NUMBER OF OBSERVATIDNS: RI0

-M,

,L HAL CLIMATOLOGY BRANCH PIRLLNIAGE FALQUENCY OF OCCURRENCE OF SURFACE WIND IRELTION VERSUS IINU PECUUSAF LTAC FROM HOURLY OBSERVATIONSAIR WEATHER SERVICE/MAC

STATION NUMBER: 727855 STATION NATE: FAIRCHILD AFB WA PERIOD OF RECORD: 70-84

MONTH: DEC HOURSILSII: ALL................................... *................,.....*.. , ...... ,,,.*......,..... , ................... ,................. o

wIND SPEED IN KNOTSDIRECTION I 1-3 4-t 7-10 l1-lb 11-21 22-Z1 28-33 34-4O 4I-47 48-55 bE 5b TOTAL MEA%IDEURELSI I WIND

.......... ... o... ..... . .. •.... :......oL ......... .......... ,. ........ ,....... ..... .................. ............ ...N .8 1.2 .5 .0 2.5 4.8

NNE 2.6 N.4 2.2 .9 .1 9.7 5.4

NE 2.2 3.8 2.1 .8 .1 9.7 b.1

ENE 2.5 3.6 1.1 .2 .0 8.D 9.9

I 1.8 1.9 .2 5.4 3.5

ISE .6 .1 .? .0 1.3 4.0

SE .7 .6 .2 .2 1.6 4.8

SSE 1 .0 1.3 .7 .2 .1 .0 3.2 S.6

, 2.3 3.3 2.0 1.0 .1 .0 8.7 b.3

SSW 1.1 2.2 3.1 2.5 1.1 .2 .0 103 9.8

SW .7 1.1 2.0 2.8 1.1 .4 .0 8.2 11.0

WSW .5 .8 .9 .8 .2 .0 3.2 8.4

I .9 1.4 .7 .5 .1 .0 T.b 6.9

ANW .5 .S .1 .1 1.2 4.6

N .5 .3 .1 1 .0 9.I

NNW .1 .5 .2 .0 1.1 4.0

.*................ o.. . . . .o o o .. . . . . .=. . . .. ., , , . . o .* °. . . . ,.. . .. . . ... . .. . .. , . .. o ,VARIABLE I

CAL-/ 2.0 0.2

TOTALS 1 9.1 26.8 11.5 9.6 Z.9 .7 .0 lO0.0 ,

..... ... ................ .. .. .............. .......... ........................................ ......... ..... .....

TOTAL NUMBER OF OBSERVATIONS- 1440

uL Ud AL CLIMATOLOGYM BRANCH PC ZE[NTIA GE F REOUE NC OF OCCURRENCE OF SURFAC E WINDSDIRECTION V[RSUS WIND SPEEDUSA#F I TAC FROM HOU R LY OBS ERHATIONAIR sTAIHFA SERHICE/MAC

STATION NUM4ER: 7278SS STATION NA4E : F AIRCHILD AFRB WA PERIOD) OF RECORD: 14-81,MONTH: AEL MOURSiLSII: ALLI

WIND SPEED IN ANOTSL)IRECTIO I I - 4-6 7-101D Ib 11_21 2 2-21 2 8 -3 3S4-40 41-N1 48-4S SE Sb TOTAL MEANILFU

0L (SI I WINO

N I .a .9 .3 .1 .0 2.1 4.5

NF I 1l.A 2.4 1 .4 .4 .1 .0 6.1 .

N I 1.9 2.9 2.0 .6 .1 .0 .0 7 .4 6.0

1N It 2.0 3. 3 1.A .13 .0 .0 7.4 5. 3

t 1.8 1.A .6 .1 .0 .0 4.2 k.2

T SF I .8 .4 .2 .0 .0 1 .5 4 .0

sF 1.0 .7 .2 .0 .0 1.9 4.0

ss1 1.2 1.1 .6 .1 .0 .0 3.2 4..

S I 2.8 4.0l 2.S f, .0 .01 .0 9.8 s.

S W I 1.9 4.0 4.5 1 .9 3 .1 .0 12.6 1.4

S W I 1.6 2.17 3.5 2.1 .4 .1 .0 .0 10.4 R.2

WSW I 1.2 1.6 1.7 .9 .? .0 .0 4.5 7.2

W I 14 1 .6 1.0 .5 . 1 .0 .0 4.9 6.0

WN4W I .6 .6 3 .1 .0 .0 1 .4 5.3

NA I .4 .4 . .0 .0 .9 4 .1

NNW8 .41 .4 .1 .0 .0 .9 4.s

VARIABLE

CALM Iiiii/iiiiiiiiiii//ii/i//iiiii//i/i/ti#/Ijii/ 19.5 l/l

TOTALS I 2 1.71 28.9 20.1 1.6 .2 13 .0 .0 100.0 4 .9


GLOdAL CLIMATOLOGY BRANCH PERENTAGE FREQUENCY OF OCCURNENCL OF SURFACE WINO uIRELTION VYSUS 1INU sPEEDUSAFI AC FROM HOURLT ORSERVAIONSAIR WEATHER SERVICE/MAC

STATION NUMBER: 727855 STATION NAIE: FAIRCHILD AFB WA PEQIOD OF RECORD: 15-8bMONTH: ALL HOURSILSTI) ALL

.. . . . . ...... oo .......o° o o.oo o oo o ..... ..o° ..... o° o°°......... . °oo ................................°......o...................

CEILINGS 200 TO 1400 FEET ITH VISIBILTIIS 1/? MILL O "ORE

ANO/ORCEILINGS 200 FELT OR MORE WITH VISIBILTIES 1/?1 0 ?-112 MILLS

°°oo° .. . ...o. o o .oo o o.. °o° ....... ~ .. °,°o...........°,°o°..... o° .........................................................°oWIND SPEED IN KNOTS

DIRECTION I 1-3 4-b 7-10 11-16 17-21 22-27 28-133 34-40 41-4? 48-55 (f Sb TOTAL MEANIDEuREESI I I NIN

.......... o .o °o.. °........o....... °o.. ° ....... °°°oo°°........ °o°.. °......°°.........°...........o°............o............ °

N I 7 .7 .2 .0 1.7 4.2

NNE 18 2.1 1 .0 .3 .1 .0 5.1 5.4

NE 2.2 2.9 1.8 .1 .1 .0 71.4 .t

ENE 2. 3.4 1.6 .2 7.5 4.9

L 2.0 1.8 .5 .0 4.5 -. 1

EI .8 .5 .3 .0 j.7 1 .5

SE 1 .0 .1 .3 .2 ,.I 4.1

SSE I .2 1.1 .8 .2 .0 I.S 5.s

S 2.9 4.2 3.2 1.I . 11.5 6.0

SSW 1.8 4.1 5.5 2.3 .1 .1 .0 1q.? I.?

SW 1.5 Z.8 3.S 2.2 .1 .1 10. 8.1

WSA 1.0 1.2 l.l .5 .1 .0 1.9 6.6

A 1.0 1.1 .4. .1 .0 2.7 4.

ANW .4 .2 .1 .0 .8 4.1

NA .1 .2 .1 .0 .6 4.2

NNW .2 .2 .1 .[ .S 4.2

........ °..... ... ... .... ... ... .... ... ... ........... .... .... . ..................... ° ................... o............•

VARIABL E .. . .":

TOTALS 21.9 27.5 20. 7.6 1.0 .1 .0 100.0 4.8

.... °°... . . . .. . . ...........°°° °o °, o..... ...... ° o.............,...............oo.. oooo............o............°................

TOTAL NUMBER OF OBSERVATION$: 10685

-r

U S AIR FORCEENVIROHKIETAL TECHNICAL

APPLICATIONS CENTER

PART D CEILING VERSUS VISIBILITY

This summary Is a bivarlate percentage frequency distribution by- classes of ceiling from zero to equal to orgreater than 20,000 feet and as a separate class "no ceiling", versus visibility in 16 classes from zero to

equal-to or greater than 10 miles. Data are derived from hourly observations, and three sets of tables arepresented as follows:

1. Annual - all years and all hours combined2. By month - all years and all hours combined5. By month - by standard 5-hour groups

Due to the cumulative nature of this presentation, it is possible to determine the percentage frequency ofoccurrence for any given limit of ceiling or visibility separately, or in combination of ceiling and visi-bility. The totals progress to the right and downward. Ceiling may be determined independently by re-

ferring to totals in the extreme right hand column. Also, visibility may be determined independently byreference to the horizontal row of totals at the bottom of the page. The percentage frequenicy for which thestation was meeting or exceeding any given set of mtninm ny be determined from the figure at the intersectionof the appropriate ceiling column and visibility row. Several exniples in the use of Lhese tables are shownon pages 2 and 5 below.

U. S. Weather Buireau and Navy stations did not report ceilins within the range 10,000 feet and higher prior toJanuary 19119. Summaries prepared from data for these stations using the earlier period and data subsequentto January 1949 4ill be modified to limit ceilings to 10,000 feet. Short periods of record prior to 1949for these stations will be eliminated from the sunimary. For Air Force stations, the "no ceiling" categoryincludes clear and scattered conditions, and ceilings above 20,000 feet for period through June 1918.Beginning in July 1948 for Air Force stations and January 191) for USWB and U. S. Navy stations the "noceiling" category consists of observations with less than 6/10 total sky cover and those cases where totalsky cover is 6/10 or more, but not more than 1/2 of the sky cover is opaque.

Beginning in January 1968, HETAR stations report visibilities to 6 miles and then greater than 6 miles.

Thus, for MLTAR stations, the category equal to or greater than 10 miles is not printed in the tables,

unless the summary was for a period ending before Jaimunry 1968. For most Airways stations, visibilities of

greater than 7 miles were not reported for part of the period of record. Therefore, the >10 mi visibility category

should be used with grest caution.c'ontinued no Iever. e side

I) - I

~FDLAJ4Lt.S FORl USE OF CEILIUI. Vu~lik Vl'IiuiiyrVY TuiIIE: IN THis TADIuLTION

ZIII 10 * 5 k4 e 4d' WY, I:', VI. a I . a% a Y, kS/I5 2t

NO [11LING

2! 1 goo

k 1200

2. 99.6

k 100

2! 00

2: 400

- , -300-

2t 200

k 100

MXJA' I R Iead c~iling values independently or Yisibility under column at right headed > 0.For instance, from tile table: Ceiling >1500 feet . 92.6%.

Ceiling >500) feet u 98.1%.

EXAMI'E 2 Rlead viuibilities Independenstly of ceilings on bottom line opposite > 0. From the tabil:Visibility >3 milen -951%VILibIlity >2 miles - 96.1)%.Visibility 1 admle a 90.3%.

EXJAutE 3 To obtain combinations of ceiling with Vilbility, read figure at lnti.::.. tion at thetwo cateitories; I.e.: Ceiling > 1500 feet with visibility >3 miles n 91.0%.

ADDITIONAL EXAPLESIEXAMPLE 4 4 Values below minimums stated in the table may be obtained by subtracting the value given

in the table from 100%.Thus, to obtain the percentage of observations with ceiling < 150 feet and/or visibility< 3 miles, subtract the value read from the table at the intersection, which is 91.0,from 100.0. The answer 9.0 is the percentage of observations with ceiling < 1500 feetand/or visibility < 3 miles.

Likewise, the percentage of observations with ceiling < 500 feet and/or visibility < 1mile is 2.6, obtained by subtracting 97.4 from 100.0.

EXAPLE # 5 To find the percentage of observations falling within the two categories given in exwnpleabove, subtract the value read from the table for the first set of limits from the valuein the table for the second set of limits. The difference will be the percentage ofobservations meeting the lower set of limits, but not meeting the higher set of limitu.

The value 91.0 read from the table at the intersection of > 1500 feet with > 3 miles,subtracted from 97.4 read from the table at the intersection of > 500 feet with > 1 mileis equal to 6.4%. Thus; 6.. percent of the observations meet the criteria: "ceilLng >500 feet with visibility > 1 mile, but < 3 miles; or ceiling > 500 feet, but < 1500 feetwith visibility > 1 mile.w

Since these tabulations are prepared in several ways including by month, by 3-hour groups it is pssibleto determine diurnal variations of ceiling and visibility limits as well as probabilities of variousceiling-visibility combinations.

D- 3

GLOAL CLIMAIOLOGY BRANCH ILECLNAE FRECUENCY OF OCCURRENCE Of CEILING VERSUS VISIBILITIUS1 TaC FROM HOURLY OkSERVBIIONSAIR LA7IHEV SERVICE/MAC

SIAION NUMBER: 121855 STATION NAtE; FAIRCHILD AF8 6A PERIOD OF RECORD: 7b-6S

MONTH: JAN HOUS(LSrI: U00UO-023U

CEIL1N0 VISIBILITY IN STATUIE MILES

1I I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GL .FEEl I 10 6 S 4 3 2 1/2 2 I 1/2 I 1/4 1 3/4 Si8 112 5/1b 1/4 0...... ,. o ......... .°.ooo o.. ,°, . ............ °.. ....... •......o..oo°,................... .oo... ................... ,.......... . ,

NO CEIL I 24.4 26.0 26.3 Z6.5 26.b lb.? 27.0 21.1 27.1 27.6 27.7 27.8 28.6 28.7 29.6 33.4

GL 20OUOI 26.8 27.5 2?:R 2. 28.1 2R:2 2R.S 28.6 2.6 29.2 29.4 29.5 30.1 30.3 31.4 32.0uL 18000 2.R 23.5 21.8 78.3 28.1 28.2 2R.S 28.6 2R.6 29.2 29.4 29.5 30.1 30.3 31.4 3k20GE T)0 1 25.8 21.5 27.. 28.0 2 . 1 2R.2 28.5 2R.6 ZR.6 29.2 29. 29.6 30.1 30.1 31.4 32.

CE 140001 26.2 28.1 28.5 28.6 ZR.? 28.8 29.1 29.2 29.2 29.9 30.1 30.2 11.1 31.3 32.4 33.0GE 120001 2R.1 3.0 30.4 T0.5 10.6 30.8 31.1 31.2 31.2 31.8 320. 32.2 13.0 33.2 34.3 34,.

GE 100001 30.0 32.1 32.7 12.8 12.9 31.0 33.3 33.4 31.4 1 1.1 34.3 3.4 36.3 36.6 36.6 31.3GE 90 0 30.5 32.8 33.2 33.3 13.4 33.5 33.9 34.. 34.0 34.6 .8 34.9 5.8 38.0 37.1 31.t.E 80001 31.6 3.U 34.4 34.6 14.6 34.7 35.2 36.3 165 36.9 36.1 36.2 37.1 31.3 18.4 39.1

uE 71 3 3.8 36.3 36.8 37.3 37.1 31., 31.6 1.1 31. 38.4 38.6 38.1 39.8 40.0 41.1 41 .86E bo001 3..3 31.0 37.4 31.6 11.1 17.6 b 8.1 384 38.4 39.0 39.2 39.4 40.4 40.b 41.1 2.5

GL t51001 36.8 39. 40.1 40.3 40.4 40.5 41..:0 4 1 .1 41. .I.9 42.0 43.1 43.13 44.4 452[( 4SUO 11.6 40.4 40.9 43.1 41.2 41.3 41.7 41.8 41.8 4.5 42 42.8 43.9 44.1 41.2 15.9GE t4COI 38.6 41.S 42.0 42.3 4;2.2 42. 43.0 43.1 43.1 40.8 44.0 44.1 . 6.3 46.6 46.b 4I.

360 39.1 42.2 42.R 41.3 41.2 43.3 43.8 43.9 43.9 44.6 44..7 8 46.0 4b.z 47.3 48.1CLI .0U. 5 43.9 44.1 44.9 6S.2 45.3 45.1 45.8 45.8 46.6 46.7 46.8 48.0 48.2 49.2 50

1.1 261(01 41.9 458 46.1 46.9 47.1 41.2 41.6 41.7 1.1 48.4 44.6 48.7 49.9 60.1 1.2 I1.Il 23,01 43.3 '1.4 48.3 485 48.9 490 4.7 49.9 49.9 60.6 63.8 60.9 62.0 62.3 63.3 64.3

1 1U0I 43. 41.4 48.3 48.5 49.0 49.1 60.0 0O.4 10.4 61.1 51.3 51.4 52.6 52.8 63.9 64.6Uf 1u.30 44.3 49.4 50.2 60.4 51.0 61.1 62.3 62.8 62.9 53.8 54.0 54.1 6.3 66.6 66.6 67.3

nf 420 1 I 0.9 51.8 62.3 51.0 5.1 5.5 I6.) 66.2 66.0 66.2 66.3 57.5 57.7 68.8 69.6

f lcjuO 46 .3 SI. 62.8 53.4 54 5 .56 56.0 6.6 56.7 57.5 57.7 57.:8 59.0 59.2 b0.3 61.1E , 1 46.0 63.2 4.S4 6.S4 66.6 568 58.2 68.8 59.0 69.9 60.1 60.2 61.4 61.6 62.7 63.9bE 81)1 46 .1 4 .4 55.6 5.1 57.8 58.3 69.7 60.3 bO.1 61.4 61.6 61.7 62.9 63.) 64.2 6.9ul IUl 43. ' S6.1 566.2 57.3 68.6 68.4 b.3 61.1 b.3 62.6 b.O 61. 64.3 64.6 65.6 bb.1W3 60VI 43.4 56.0 57.2 58.6 69.8 6..2 61.6 62.6 62.8 64.3 64.9 65.1 6b.6 66.8 b8.0 68.3

63 630 49.3 67.6 59.0 60. 62.0 62.6 6 4. I. 6.4 6.8 67.6 69.8 68.7 30.2 70.4 :1.4 32.:GE *uGI 4R.2 58.1 69.7 61.1 62.8 63.2 64.8 6.5 67.0 69.4 10.8 10.4 12.5 72.7 34.4 35.3LI 3.0 I 98.6 69.0 60.4 62.5 6.6 64.9 61.0 66.4 69.6 13.4 16.6 76.8 14.2 74.8 2.8 6.11, 2 C1 48.6 59.4 61.2 62.8 66.3 65.1 68.3 7G.4 11.0 16.6 79.7 19.9 83.8 86.1 1.0 46.5uE I0I 49.6 69.5 61.3 62.9 65.4 65.8 6.8.4 1u.b 11.2 16.0 80.3 80.5 84.6 86.5 92.7 99.9

E ()1 48.b 69.5 61.3 62.9 65.4 66.8 b8.4 10.6 11.2 3b.0 80.3 80.6 84.5 46.5 92. 7 Ijj.3•... ................ °.......o.o..o....... .... o ...... •.....o.... .... ... ........ .. . . oo . . .... ° ............... .,...... ........

TOIAL N3M)t1Of ORSERVATIONS: 930

a

11OAAL CLMAIOLOGY BRANCH 'qCLNIAU[ FAE.uLNCY OF OCCURRENCE OF CEILING VERSUS VISIBL1U S:A tc FROM HOURL y OdSLR9AIONSAI IEAIHIR E8RICE/MAC

STATION NUMuR; 127805 STATION NAIL: FAIRCHILD AFB WA PERIOD IF 0LCORD: 76-A

M0N7H: JAN HOURSILSII: 030D-0500

IN I G1 61 GL GE GE LE GE GE GL GE GE 6E GL GE GE BEfL E I 10 6 5 1 2/2 2 1 12 1 1 Y 3/4 51 1/2 5/lb /N

... .. ., .. ... . , .. , . .. .. . .. . ,.. ... ... .. .. . ... ., .... ......... . . ,,......o .,......... •.......... o...

NO CEIL 1 Z2.5 21.S 23.8 23.8 21.9 23.9 29.0 24.0 24.1 24.Z 24.1 Z4.1 Z.7 2q.q 25.2 26.1

6L 2001 21.9 24.9 25. 2 25.2 25.3 25.3 25:4 25.4 25.5 25.6 25.7 25. 26 2.1 26.1 27.6St It .u 29 24.9 25.2 25.2 25.3 25.3 25.4 25.4 25.5 25.t 25.7 25.7 26.1 26.1 /6.1 27.bIE 16000 ,21. 2N.9 25.2 25.2 25.3 25.3 25. 25.4 25.5 25.1 25.8 25.6 26.2 26-S 268 17.1

E N I0001 24.1 2S.2 25.4 25.' 25.6 25.6 25.7 25.9 26.0 26.2 26.3 26.1 26. 27. 71 28.16E I/COOI 26.5 27.7 28.0 28.3 28.2 28.2 28.3 28.5 28.6 28.8 28.9 28.9 29.4 24.6 24.9 13.9

GE 100001 28.5 10.1 30.3 10.0 30.5 s0.5 30.6 30.9 31.0 01.2 31.1 11.1 II.7 51.9 12.1 11.2I.E 9000 29.0 10.6 10.9 10.9 1;.1 11.1 31.2 31.4 31.5 311 31.8 71.8 32.1 12.5 12.8 11.8

oE 8o00 11.0 12. 31.1 13. 11.4 11. 315 1. 33.9 3 4. 3. 142 46 1-. 152 1E 10001 512.8 3.14.9 15.1 35.6 3.6 35.1 15.9 36.0 16.2 16.1 3 6.8 37. 1.U 1 38.U 60001 3.8 15.1 315.4 b.2 316.6 3b.6 36.7 36.9 37.0 37.2 37.3 31. 37.7 38.0 19.1 10.2

GE 5013. 18.1 38.9 19.4 39.1 39.7 19.8 40.0 40 4 404 40.04 40.9 41.1 1.9 42.4I 3S 11.1 14.6 39.8 40.2 40.5 40.5 40.6 40.9 4 1. 4l.2 41.1 91.3 41.7 I I.9 42.1 41.2

L E 40001 3.0 41.1 41.5 41.9 42.1 42.1 42.4 42.6 b 2.1 42.9 3.0 41.0 41.4 41.7 '44.0 44.9I. 14 9.1 42.3 42.5 42. 41.2 4.2 43.3 43.5 41.1 41.9 440 44.0 4.4 b 44.9 45.8bE 05OI 40 4.6 41.4 '..7 44.1 44.5 44.5 44.6 44.8 44.9 45.2 45.3 45.3 45.? 45.9 46.2 47. 2

GE 25001 42.1 45.6 46.0 46.6 97.0 2. 47.2 47.4 47.5 47.8 48.0 48.0 48.4 96 4: 8.9 49.9I. 2O00 42.9 41.0 4.4 4o.J 48.4 48.4 48.6 48.8 48.9 49.4 49.5 49.5 49.9 50.1 50.' 51.96E IBOO1 41.0 47.1 7.5 8.1 48.6 48.6 48.8 4.4 49.5 SO. 1 50.1 SO.1 50.5 50.8 51.1 52.36L 15001 3.2 48.0 48.4 49.3 49.1 9.9 50.1 50.6 51.0 51.5 51.6 51.6 52.0 2.3 52.6 51.5I. 12001 41.9 49.1 49.7 50.4 51.I 51.5 52.0 52.6 52.9 51.5 51 51.? 54.1 54.5 54.8 55.8

It 10001 44. 50. 5.2 52.2 51.2 51.6 54.2 54.8 55. Is.9 56.0 56.0 56.7 56.9 5?.2 58.2GE 900 44.9 52.8 52.8 54.2 55.5 55.8 56.5 57.2 51.5 58.4 g.5 58.5 59.1 59.4 5 .7 b0.6E 8OI 45.2 52.5 53.9 54.9 56.2 56.6 51.2 58.4 58.1 59.6 S9.7 59.7 60.3 6U.5 60.9 61.8

IE 7o01 45.6 53.2 5.1 55.9 57.4 51.7 5R. 4 59.6 60.0 60.9 61.5 61.5 62.3 62.5 62.8 61.8GE 6001 46.1 54.2 55.4 57.2 58.9 59.2 60.1 61 .7 2.4 1.3 64.3 64.3 65.4 65.6 65.9 8bb9

I.E 500| 46.3 55.6 56.4 58.7 60.9 61.2 62.1 64.0 b48 66.0 67.1 67.2 68.1 68.7 64.2 17.1LE QO01 46.6 56.9 58.6 60.8 631 614 65.1 67.2 68.2 69.1 71.1 71.2 72.5 71.0 71.? 74.8GE 310 46.T 57.8 59.8 62.5 64.8 65.2 67.2 70.2 11.7 74.6 16.9 77.1 79.1 80.4 91.1 97.1GE 2001 46.8 58.,. 60.4 61.2 65.7 66.0 68.2 71.5 13.1 76.7 80.2 80.6 84.1 8b.b 91.0 95.1.E 1OO1 46.8 58.4 b. 61.2 65.7 b6.0 68.1 71.7 73. 77.0 80.5 81.0 84.5 87.0 92.5 9Y.1

6E 0I 46.8 58.4 60.4 63.2 65.7 66.0 68.1 71.7 71.3 77.0 80.5 81.0 84.5 87.1 92.8 130.0. ... ..o ... .o......... ...... . .oo...........................° o ° ° ...... o,.....,*........ ... . . . .... o..

O1AL NUMBER OF OB5RVATIONS: 910

J

ULO8AL CLIMAOLU T bRANCH ,[4(3 Nlu f t'ULNL 1i D(LUWPLNCL OF C(ILING VERSUS VISBILII ru SAFT C F ROM HOURLY ObtRVATION5

AIR EA78HE k (8VICL/MC

SI A 0N NUMBLR: 121855 0 STATION N8: FAIRCHILD F 6 wA PERIOD GF RECORD: 76-85MONTH: JAN HOURSLSI: 3600-0800

;;"; ;~~~~~~ .. ............ .......... .:: : : : : : : : : : : ... .. .. .. .. .. .. .. .... .. .. .. .. .. .. .. .. .. .. .. ..L . .~d .IIlii 1N SI E MIL E SIN I E 4L GL Ut G1 GE GE GE GL GE GE G GE E GL GE

FEEl 10 6 3 2 12 2 1 |12 11/4 1 3/4 Sia 112 SIlb 1/4 a.. .. .. .. .. . .. ... .. .. .. . .. o. ... . .. . .. . .. . .. .. .. .. .. .. . . .. .. .. .. . .. .. .. . . . ... .. . . o .. .. .. .. .. .. .. .. .. .. .. .. .... .. .. *. . *.*.

NO CEIL 1 19.9 23.0 21.1 21.3 21.6 21.b 22.4 22.8 22.8 22.9 23.2 23.3 23.7 23.8 24.0 24.4

GE 200003 23.1 22.6 22. 22.9 21.2 23.2 29.0 24.9 29.9 24.5 24.8 24.9 25.5 25.6 25.8 26.3GE 180001 21.5 22.b 22.9 20.1 23.4 23.4 24.2 24.6 29.6 24.1 25.3 25.2 25.1 25.8 26.0 2b.bGE I60001 23.5 22. 22. 23.1 23.4 23.9 2'.. 29.6 29.6 2. 25.1 25.2 25.7 25.h 26.0 26.b

bE 140001 22.0 23.4 23.5 2.: 24.1 24.3 24.8 25.3 25.3 25.4 25.8 25.9 26.5 26.6 26.8 27 3LE 120001 24.3 25.8 25.9 2-.1 26.5 26.5 27.2 2z.6 27.6 27.1 28.2 28.3 28.8 28.9 29.3 Z.3

GE lO000l z.8 21.5 27.3 28.) 29s4 28.9 29. .7 2'ol 29.8 30.2 30.3 30.9 31.0 31.2 II.IGE 9000 26. 21. 28. 28.2 28.6 28.6 29.9 29.9 9.9 30.0 30.4 30.5 31.1 31.2 33.4 31.'GE 8001 21.6 30.0 30.3 30.5 33.0 33.0 31.7 32.3 32.3 32.9 32.9 33.0 33.5 33.8 3'.1 3'.1

GE 10003 30.8 30.5 33.9 34.1 345 3.45 35.3 35.8 05.8 35.9 36.5 36.6 31.3 37.3 37.6 33.2GE 60001 32.8 35.6 35.9 36.3 36.6 36.6 31.3 31.8 17.8 38.0 38.5 38.b 39.1 9.4 39.7 4J.2

GE 50001 15.3 38.3 38.6 38.9 39.2 39.2 40.0 40.5 40.5 40.b 41.2 41.3 4.8 42.0 42.4 42.9GE 3ssuo 35.1 38.9 39.2 39.5 39.9 90.0 40.8 91. 4 41. 1.4 41.9 92.o 42.b 42.4 3.1 . 1

GE OUI 6 6.6 39.8 40.2 40.4 90.9 4.0 4. 1.1 2.3 2.3 92.9 92.9 43.0 4.5 43.6 4.1 49.6GE 353101 38.1 41.5 42.0 2.3 42.7 42,.8 43.5 -4.1 9.1 94.2 44.1 94.8 45.4 5.b 45.9 4b.5GE 3o1 38.9 43.2 44.a 49.2 44.9 45.1 45.8 46.3 9.3 b.5 97.3 97.1 7.6 47.8 98.2 48.?

GE 25o1 399 49.1 45.5 45.1 466 96.3 4:1.6 98. 2 982 48.3 48.8 98.9 49. 5 49.1 0.0 5.5GE 2CO0 40.8 96.3 97.2 4.4 48.5 48.6 49.6 50.I 50. 50.2 50.8 50.9 51.5 51.7 52.0 52.6GE le01 40.9 6.6 41.9 41.1 48.8 88.9 99.9 50.9 50. 50.5 53.3 53.2 51.8 52.0 52.4 52.9GE 15001 93.3 41.1 48.0 98.3 99.4 99.5 50.4 51.1 51.1 51.4 52.0 52.2 52.8 50.0 53.3 53.9bE 3201 43.9 99.5 50.3 50.6 5.9 52.3 53.3 54.1 54.2 54. 55.9 55.5 56.1 56.3 56.? 53.2

GE 3100 47.0 49.9 50.8 51. 52.4 52.7 54.0 54.7 54.8 55.6 56.2 56.3 57.0 57.4 51.1 56.361 9601 42.4 50.9 51.3 51.8 53.5 53.9 55.2 55.9 56.0 56.9 57.5 51.6 58.3 58.7 59.0 59.6GE 8001 92.7 51.9 52.0 53.1 54.7 55.1 56.5 51.9 57.5 58.' 59.1 59.2 59.9 60.4 60.8 61.3GE ID700| 92.9 59 52.8 53.7 55.? 56.1 51.5 58.1 58.8 59.? 60.9 60.5 61.2 63.1 62.0 62.bGE 6001 2.9 52.1 53.5 59.9 56.8 51.2 59.0 60.b 6.0 62.2 631 63.2 69.0 64.5 4.8 65.4

bE 5001 43.9 5'.2 55.4 56.3 58.8 59.9 61.3 60., b3.9 65.2 66.3 66.5 61.9 68.9 68.9 64.6GE 400 44 .2 55.9 51.5 5 86 63.8 62. 6 8 61.2 67.1 69.8 71.5 7 16 73.5 74.8 I5.7 76.7GE 3001 99.3 Sb.5 58.2 59.2 63.1 63.9 66.9 70.0 14. 15.2 17.3 71.5 80.3 82.3 84.4 81.26E 2001 4.3 5b.9 58.t 59.1 63.8 69.5 68.0 31.9 13.2 78.5 83.0 81.2 89.8 88.3 N3.7 95.G[ 31001 44.3 56.9 58.b 9.1 63.8 64.5 68.0 13.' 13.2 18.6 83.3 81.3 85.4 8'8.b 93.2 49.9

6f 0 44.3 56.9 58.6 59.1 6s.8 64.5 68.0 71. 13.2 18.6 81. 81.3 85.' 88.6 '.32 100• ............... * ... . ,,...... ..........*........,......... . ,° * °. . . . . . ,. . . . . . . . . . . . . . . . °

IOIAL NUMBER OF 085OERVAIONS: 930

-t-

4

N

S.

GLOBAL CLIMATOLOGY BRANCH lEkLENrAGE F8ESULNCP Of OCCURRENCE OF CEILING VERSUS VJSIbILIYUSAFL AC FROM HOURLY OBSERVATIONSAIR SEATHER SERVICL/MAC

SIATION NUMBLR: 721d56 STATION NAFE: FAIRCHILD AFB SA PERIOD OF RECORD: lb-85MONTH: JAN HOURSILSIS: 0900-11)t

CE ItING ... 1S1..85IBL157 14 STATUTE MILLS

IN I G 6L L E GE 6 GE GE GE GE GL GE GE f GL G GFEET I) 6 5 4 2 112 2 1 12 I 11/ 1 3/4 5/8 2 /25b 1/4..... o........,...................... o ...... oo........ o. o ............ ,o, ... .o. o.............................................

NO CElIL I I7.? 20.5 21.1 21.1 21.6 21.6 21.7 22.0 22.0 22.4 22.6 22.7 21.2 25.7 24.0 24.3

GE 2U000 20.3 21.1 24.Z 24.1 24.8 24.a 24.9 25.3 25.3 25.8 26.5 26.3 26.9 27.5 28.0 2U.G(,E 180001 20.5 21.5 24.4 24.5 25.1 25.1 25.2 25.5 25.5 26.0 26.3 26.6 27.1 27.7 28.? 2bZ

b IbOGO0 20.6 23.7 24.5 24.b 25.2 25.2 25.3 25.6 /5.6 26.1 26.5 26.1 27.2 27.8 28.3 2 .3GE 140001 21.9 25.1 25.9 2b.J 26.7 26.7 26.8 21.1 27.1 27.6 28.0 28.2 28.7 29.4 29.9 3J.I

0E 001 24.7 2. B.oB 2a.1 29.6 29.6 29.7 100 30.0 30.5 10.9 15.1 31.6 52.3 32.8 13.3

GE 1OOD0I 2b.6 29.9 30.6 5. 35.8 35.8 319 32.3 32.3 32.8 3.31 13.3 34.0 39.6 16.2 5,4Gf 90U0 28.5 1.4 32.4 12.? 33.1 33.3 33.4 -338 33.8 34.3 34.6 34.B 35.6 36.1 36.7 36.bE 8000! ".0.0 31.4 34.6 3651 5.7 35.7 35.8 36.1 36 36.7 37.0 37.2 38.0 38.6 3.1 34.4GE 70U0! 35.5 35. 2 36 .3 37.3 37.7 37.7 378 38.2 38.2 38.7 39.1 39.4 43.1 40.8 9. 41.5GE 6o0! 32.4 36.0 37.2 37.3 38.8 38.8 38.9 39.2 39.2 39.8 40.2 40.4 45.2 41. 8 .2.4 42.

6 5000! 17 18.1 39.9 40.5 456 45.6 45.7 42.0 42.0 42.b 43.0 43.2 44.0 49.6 45.2 45.4GE 4001 36.1 19.8 45.0 41.6 42.7 42.1 42.8 40.1 415 43.1 94.1 44.1 45 4 5.7 96.2 46.5

GE 4000 36.6 40.9 42.0 42.7 43.9 43.8 43.9 44.3 44.3 44.8 45.3 45.5 46.3 47.3 97.6 1.7GE 3600! 36.9 41.4 42.1 43.3 44.4 44.4 44.5 44.9 44.9 46.5 46.9 46.1 47.3 41.b 48.2 4. 4GE 100! 37.3 42.4 43.9 44 .6 46.2 46.2 46.3 46.9 46.9 41.4 47.8 48.1 48.9 49.6 60.5 63.1

GE 2500 38.6 44.4 46.2 41.3 48.6 NB.? 49.0 49.1 49.1 60.3 60.8 51.0 5.8 62.5 1.30 63.2bE 000! 39.6 45.6 41.6 48.4 50.5 50.2 60.8 61.6 6.6 5523 62.? 62.4 6.8 64.4 64.9 55.2

GE 58001 39.8 46.2 48.3 44.3 50.8 60.8 515 52.4 52.5 53.1 53.5 538 64.b 55.1 55.8 66.06E 160! 40.4 47.1 49. 50.2 52.4 52.5 53.2 54.1 54.z 54.8 55.3 56.6 6.6 57.5 51.7 66.0GE SZUO 45.2 48.9 51.3 2.23 5.7 55.9 56.8 51.6 57.7 58. 4 58.9 59.1 60 .5 6. 6 1.4 bi.6

GE 5o00 45.4 49.6 62.0 5i7 56. 56.9 51.7 58.7 68.8 59.9 60.4 60.6 65.9 6.6 b12 63.4GE 9001 459 50.2 52.8 54.4 57.8 58. 59.2 60.3 60.4 6;:5 62.0 62.3 61.6 64.2 t4.8 b.5bE 800 42.4 50.9 63.9 55.1 59.5 59.7 bl. 62.3 62.4 63.7 64.3 64.6 5.8 66.5 67.I 67.3GE 100! 42.5 5. 5.5 56.3 60.6 65.2 62., 63.9 64.5 66.6 66.2 66.5 67.1 68.4 69.0 69.2Gf 6O! 43.2 52.0 56.5 57.4 61 .8 62.5 64.2 65.7 b.0 67. 6 69.4 bB 700 70.b 75.3 71.6

GE SUo! 56.3 5 57 9n 64 9 b 6 61.4 69.0 b96 71.5 12.6 72.9 74.6 7.3 76.0 76.2GE 400 41.1 64.5 58.2 61.3 61.4 68.2 10.8 72.6 13.5 75.4 11.4 78.1 81 3 85.4 5.1 83.6

IE OI 43.7 54.4 585 61.6 68.9 69.7 12.5 75.4 76.1 80.4 82.9 83.S 86.1 98.1 95.1 92.8GE 200 4$11 54.5 68.6 61.6 B9.4 10.1 13. 76.6 11.4 82.2 96.5 85.8 89.5 91.3 46.6 98.3GE Iu0 43.1 54.5 58.6 65.b 69.4 70.5 73.0 76.5 171.4 82.2 BS.1 86.8 89.2 91.5 9b.2 10.3

GE O 43.7 64.5 58.b 61.5 69.4 70.5 13.0 76.5 77.4 82.2 B5.I 85.8 89.2 915 96. 2 i 3.3o~o.. .... .... o.... . • ... . o . .... ..... .... I. ..... o . ...... ...o...o. oo . ........ . . . . . . . . . o . .... * ..


a.,p .I=

ULGHAL CLIMAIOLOGY BRANCH >EWCLNIAGL FREWULNLY Of UCCUkPENLE OF CEILING VEPSUS VISI6ILITYU 5.Af [ IAC FROM HOURLY 0dStRWAITONS

AIR .EATHE G(RVICL/MAC

STATION NUMBER: 727855 STATION NAiE: FAIRCHILO AFB WA PERIOD OF RECORD: 76-85MONTH: JAN HOURSILSTI; 1?03-1.11

CEILIN VISIBILITY IN STATUTE MILLSIN I GL GE GE ISt GE GE G E G G_ E G;E E u L GI L.

FEE! 1 10 b 5 4 3 2 I12 2 1 112 I l/4 1 3/4 5/8 1/2 5/ Ib 1/4. . . .... .. .. . .. . .. .. .. .. .. . .. . .. .. .. . .. . .. . .. .. ........ . . . .. . . . .o~ .. .. ... .o. .. .. . .. .. .. .. .. .. . .. . ... .. .. .. .. .. .. .. .. . .. ...

NO CEIL 1 19.9 21.4 21.1 22.3 22.8 22.9 22.9 22.9 23.0 23.2 23.3 23.3 23.5 21.5 Z1.5 23.5

GE 000 21.8 25.6 25.9 26.6 21.2 21.3 27.9 2.4 i7.5 28.0 28.I 28.1 28.4 29.5 28.4 2b.SG E OO 29.1 26.3 26.7 21.3 28.0 2.1 28.2 28.2 28.3 28.7 28.8 28.8 29.1 29.2 24.2 29.2GE 160001 24.4 26.5 26.8 21.4 28.1 28.2 28.3 28.3 28.4 28.8 28.9 2B.4 29.2 24.4 2.4 24.4E 14O000 25.3 21.3 21 .6 28.3 29.0 24.1 29.4 29.9 29.5 29.9 30.0 30.0 30.3 ia 4 33.4 . 3.

GE 120001 29.1 11.2 31.6 3/.3 31.2 33.3 33.4 13.5 33.1 34.1 34.2 34.2 34.4 34.6 34.6 34.6

GE 100001 31.2 13.3 33 3.1 35.7 1.8 36. 0 36 36.1 36.6 36. 36.1 31.0 1.1 11.1 31.1sE 90001 32. 4'.:8 35.4 36.2 31.2 31.1 37.5 37.5 32.6 18.1 38.2 38.2 34.5 t6.t 39.6 3t.6SE 8000 3.5 11.0 31.5 3.6 39.6 39.1 39.9 4.0 40 .I NO.5 40.6 40.6 41.0 41.1 41.1 41.1ul 10001 36.1 19.6 40.5 41.6 42.6 42.1 42.9 43.0 43.1 43.5 '4.1 93.3 44.0 44. 44.1 44.1bE 60001 37.3 4N.4 41. 42.5 41.5 3.7 44.0 44.1 44.2 44.b 44.7 44.3 45.1 5.2 45.2 45.2

GT SO0 39.? 42. t 43 .S 44.b 45.1 44.9 96.2 96.5 46.6 47.0 47.1 41.1 47. 47:5 47.5 47.5uf 44001 39.8 40.4 44.4 45.6 46.8 4.0 91.3 41.5 47.6 48. 42 8.2 48.5 48.6 8.6 46.bGE 4000 I 4.9 45.I 46.0 1.1 48.6 48.9 99.2 99.5 49.6 40.0 50.1 50.1 53.4 Sd.5 50.5 5.5GE 34001 1.2 45.5 46.S 8.3 49.5 49.8 50.1 40.4 50.5 41.0 51.1 51.1 41.4 41.5 G1.5 51.5

S 30005 41.8 'b.7 47.1 49.5 SI.I $1.9 51.7 52.0 52.2 52.7 52.8 12.8 51.1 41.2 3 .2 53.2

A 2401 42.4 48 .0 9.6 51.1 52.9 5 .5 S.9 54.2 54.3 54.8 54.9 54. 55 . 55.9 55.4uE OO01 41.4 49.4 51,0 52.4 55.2 55.8 56.1 56.8 56.9 51.4 57.6 57.6 58.0 48.1 58.1 58.1AE 1801 44.1 50.1 51.1 54.3 56.2 5b.9 57.2 51.8 58.0 58.5 54.7 58.1 59.0 59.1 9.1 59.1UL ISUI 45.2 51.6 53. 2 55.1 58.1 S8.1 5Q.I 59.9 60.I 60.6 60.9 60.9 61.2 61.1 S 1.1 61.3of 12501 46.3 5q.2 54.4 48.5 tI.! 6l.9 62.4 631 63.1 63.9 64.1 6.1 6 4.4 64.5 64.4 64.5

G[l 1000j 4 .2 55.8 58.3 b.2 b.0 6b. 65.2 65.9 66.1 67.0 673 67.3 61.6 6?.? 67.7 6.17GE 90 41.1 5 59.6 62.5 65.1 66.3 67.0 61 68.0 68.8 b9.1 69.1 69.5 69.b 69.6 b9.6

GE 80 98.1 51.9 60.0 61.3 66. 2 66.9 6.6 68.1 68.9 70.0 70.6 70.b 11.0 71.1 '1 1 71.1. 700 9 .1 48.5 6.1 64.4 68.1 69.4 70.2 171.5 1.9 73.1 74.0 74.0 7. 3 7'.4 14.' 14.4o[ 60 n 49.2 59.6 62.5 66.5 11. 71.1 72.8 14.1 14.5 75.9 77.0 77.0 71.5 71.6 11.6 71.?

G 51 9U ( 9.2 z 60 69 ,5 14.2 14.9 76.5 7d.0 28.6 80.2 81.6 81.6 82.4 82.6 82.1 8'-8GE wOol 19.9 61.1 69.6 70..1 1.2 18.2 80.0 82.4 81.0 8S.3 86.9 86.9 88.0 88.4 88.b 8.17IE 3UO 49.4 61.3 65.2 70.4 18.2 14.2 81.2 84.2 85.1 88.1 90.3 90.6 92.6 91.4 44.8 4.9GE 2UO 49.9 61.1 64.2 70.6 18.6 74.8 81.7 85. 85.9 89.7 92.4 92.7 94.8 95.8 47.8 96.5SE LO1 49.4 61.3 6S.2 70.6 78.6 79.8 81.1 85.1 84.9 89.7 92.9 92.1 94.8 45.8 V8.3 10.0

(,E . I 49.9 61.3 652 7U. 18. 14.. 81.1 85.1 85.9 89.1 92.4 92.1 44.8 95.8 98.3 IOU.3• ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 9: -------------o----.... .......... ,,.. ... ,............ 9,... ..... o ...... .

OTAL NUMBER Of O8SERVATIONS: 930

'3

ft-A

, •I ; = _ . . ..... . . ..

GLOBAL CLIMAIOLOGY 8k4RNH It'EtNI E FF[ JUENCY OF OCCURRENCE OF Cf ILING VERSUS VISI1LITYUSAFETA FROM HOURLY OULRVERATIONSAIR .1IA4HE 9FRAICEfMAC

51AION NUMBER: 72785 STRIION NRIf: FAIRCHILD AF8 WA PERIOD OF ECORD: 76-8S

MONTH: JAN OURGILSI); luO-IF1J

CIL IN RIS I B IEL1Y I N S IAJIU IF MI L ESIN I GE GE Gt GE GE GE GE UI GE GE GL 51 GL GE GE L t

FE[ I 1i b 5 1 21/2 2 11/2 1/ 1 1 3/4 S/ 112 51 1/4 i

NO C[lL I I 1-A 24.0 2N.b 2S.2 29.a 25.8 25.8 25.8 25.8 2S.t 25.9 25.4 26.0 2t.U 26.2 26.5

bE 2U000 255 28 2.9 :. 30.4 :04 3 0.5 3U.S 30.5 0.9 30.6 3 30.D b0.8 31.0 31.2UE :8000! 29.6 28.5 29 29.9 0.8 IL. . 30.9 10.9 30.9 30.9 31.0 3l.0 31.1 11.1 3l. F 1.54 160Ln 2. 28.6 29.4 I' J 30 0.9 30.9 31.0 31.0 31.0 31-u I.I 1.1 31.2 31.2 1.4 51.4UL1 4;oO0 26.9 29.9 0.S 31.2 12.0 32.0 32.2 32.2 32.2 32.2 32. 3 2 2.0 .4 32.4 12.6 3 .G l10001 50.5 13.8 19.1 ;5.R 36.7 36.7 36.8 36.9 36.9 16.4 37.0 37.0 37.1 37.1 37.F 13.S

G10000 ! 39. 1 4 0.2 81.1 41.9 41.9 42.? 4N2. 42.5 2.5 42.6 42.b 42-7 42.7 41.0 40.2GE 9 1OO 16.1 14.9 .3 2 4 .0 43.0 43.2 43.4 43.5 43.5 41.7 43.7 43.8 41.6 44.j 44.3*l 8001 37 .8 41.9 43.3 44.2 49.1 45.1 45.1 45.9 45b 45.. 49. 7 49 . 45 45.4 46.1 4b.1GL 7boo 40.9 44.6 46.1 47.J 48. 0 48.0 48.2 4. 4 48. 48.5 48. 6 48.b 48.7 48.1 49.7 4.4GE b]fl 41.8 46.0 47.9 4b.4 49.4 49.4 49.6 49.8 49 . 9 5. so.0 50.0 50.1 50.1 50.4 50.8

LI 90001 44.2 48.7 50.2 91.1 52.2 52.2 5.4 52.6 52.a 52.8 52.9 92.9 I.' s 3.0 53.3 53.3GE 49()! 44.7 49.4 50.9 51. 52.58 52 93.0 52 53.4 53.4 93. 35.5 5 53 93.Z 5 4.0 94.3GE 4UG0 45.9 51.1 52.6 53.5 S4.7 5. 1 54. 94.9 55.2 55.4 99.4 55. 55.5 5.6 99.b 59.9 5t.cGE o00 46.6 91.v 53.9 5.5 55.9 99.9 5.1 56.3 56.6 5b.b 96.7 96 56.9 96.4 5..1 91.4(II 3000 47.3 52.8 54.4 95.5 57.1 57.3 51.6 57.8 58.I 58.1 58.2 58.2 58.3 58.3 58- 5.

GI 2s001 48.4 94.1 Is 5 5197 58.7 98.9 S9.2 59.6 S9.8 99.8 99.9 59.9 60.0 bLl0 60.3 b.bbG 20I0 49.5 5.7 1.5 8.9 60.8 6.1 61.4 1.1 b2.0 62.:1 6.2 62.2 62.3 62.3 74.6 62.9LI laUD! 49.6 56.5 91.8 99.2 61.3 61.6 61.9 62.3 62.6 62.6 62.7 62.7 62.8 62.8 t3.I 613.GI 1900! 90.3 91.4 99.2 61.b 62.9 6.2 1 .8 64.1 64.5 64.6 64.8 64.8 64.9 E4.9 bS.3 b9.G t 12001 41.3 99.b 61.9 60.2 66.I b6.5 .0 61. 68.0 68. 68.3 68.0 68.4 68.4 6FF. 69.3

GE 10001: 92.3 61.7 64.0 b5.: 6: b69.6 10.1 70.6 11.1 11.1 12.1 72.3 12.4 12.4 32.8 I3.IuE 950 53.1 62.5 64.7 bb.8 70.4 70.8 71.3 71.8 72.3 73.1 73.8 73.9 14.1 74.1 74.6 3..9GE oO1 91.8 63.8 66.3 61.5 12.9 72.9 73, 74.1 14.9 79.8 76.6 76.7 17.1 71.1 17.b 7.3GE 100! 5.1 64.2 b.6 69.S 74.1 74.9 15.6 76. 76. 18.1 78.8 78.9 79.4 79.4 4.9 8.2GE 6001 5.2 64.4 68.1 7.9 5.3 75.7 76.8 71.4 71.8 79.4 80.2 80.3 80.8 80.8 81.1 81.6

bE 50uo 54.4 b4.7 68.9 71. 7 77.1 77. 18.8 19.5 80.1 82.0 83.3 81.4 81.4 81.9 84.6 84.9

GE 4O! 54.6 65.3 69.1 72.s 79.1 79.6 81.2 81.9 82.6 89.2 66.9 8.0 8 87.8 88.6 88.9

GE 300! 94.6 69.3 69.1 72.9 80.0 80.6 82.9 84.0 84.8 89.0 81.1 91.3 42.? 91.1 94.2 85.1GE 2001 94.6 69.3 69.1 72.9 80.1 80.8 8.1 84.3 89.2 88.7 92.3 92.7 94.9 91.9 91.7 48.8GE lo|l 5.6 65.3 69.1 72.8 80.! 80.8 83.1 84.3 89.2 89.7 92.3 92.7 95.1 96.1 98.3 10.3

G E V1 54.6 69.3 69.1 72.8 80.1 80.8 83.1 84.3 89.2 89.7 92.3 92.7 99.1 46.1 48.3 10 .0... . .° . . ., . .... . . . .. .. .. .. .. .. . .. . . . ... . .. . .. . .. . .. . . .. °. . . . . . . .. .. ... . ... . . . . . .. . . . . . . . .. .. . .

£I8L NUOMBER OF OBSERVATIONS: 930

I,

6b8AL CLIMAIOLObY R19ANCH 2tE(AlT6

4t F1tUlL0N Of ULCU6PENLE Of CEILING A?95U5 VIs1ILI IY

USAk TIAC fO HOURLY t81 t RVAT IONSAIR , AEAtHE 1 S R l Ct /MAC

TATION NUM088: 1278S5 STATION NAME: FAIRCiILOG At b 4h PERIo of GRLECORD: 7u-A,

90534: JAN. HOFURS: 4L]; I533: )- 14 JLO

L|t INC AICII I IN STATUTE MILLS

IN I GE GE GE CE 5 GE GE G E GE G GL 6 L L 0 b tFEE; I ID 6 5 4 1 21/2 2 1 62 1 1/4 1 3/4 5/1b I /2 1o 1/4 J

NO Ctt I 2.2 23.. 24..' 25.2 2. 26. 26.2 26.5 26.6 26.7 27.2 27.3 21.5 2?.7 24.1 Co.

uE 2 DO0) 24. 26 26.S 21.5 28. is 2 .8 24.8 29.L 29.1 29.2 29.8 24.9 30.1 30.1 10.9 3.9[ 180001 24.46 t.; 27.1 2n.0 24.1 29.? 29.7 29.9 30.0 10.1 10.6 30.4 31.0 31.2 1.1I I.,

A u 60001 24.6 2b1 2.1 28.2 29.1 29. 29 24 .9 30.0 0.1 10.6 10.8 11.0 31.2 I1.? 11.4GE 140I 01Z.7 7 281 28.5 29.4 10.5 11 .1 01.1 1.4 11.5 11.6 32.2 1.1 12? '2.5 31.. 3.5

/o 12o0t1 27.5 10.1 10.5 %I. 1 2. 11.1 13 .8 1.39 34.0 14.5 14.6 15.1 35.1 15.9 It.J

LE 100001 11.6 34.4 15.36.1 ? 3 18.3 18.8 1..9 39.0 19.6 19.7 4 0.1 4U: 1 4.1. 43i.3

*E 9c001 ,1 3.0 114 9a.4 19.9 ,.4 40 0:4 41.0 41.1 41.2 41.7 4 1. 42.3 42.5 41.11 41.21 8(( 15 .1 18.8 19. 4 40.4 4.8 42.4 42.5 41.0 43.3 41.2 43.8 43.94. .3 4.5 45.1 45.1GE 0 O1 31.8 3 4. 42.0 4.4 44.5 45.1 45.2 45.7 45.8 45.9 46.6 46.7 4 .1 43.1 I 1.8 e.1.1 61{101 1 9.4 91.0 41.5 4.4 46.0 46.6 46.? 471.2 47.3 47.4 4'8.1 44.2 48.6 46B.8 45.4 449.4

G 5005 47 .9 46.4 43.1 48.1 4 9.8 5u. 50. 51.0 51.2 5.8 1. 52.4 51.6 51.1 51.IGE 45001 43.? 43.6 48.2 49.4 50.6 51.2 Sl. 51.8 53.9 52.0 52.1 52.8 53.2 51.4 54.0 52.46 L 4000 44.6 88 49.4 50.4 51 .b 52.4 52.5 51.0 51.1 53.2 51.9 5.0 54. 54. 55.2 5.GE 35(05 S4.6 44.8 50.1 ZI.1 52.4 51.3 51.4 54.0 5 54.2 54.8 5.9 55.4 55.6 St.! 5:.oGE 30005 45.8 50.0 50.5 51.4 53.0 51.7 53.8 54.1 54.4 54.5 55.2 55.1 55.7 b. t 56.5 56.4

tl 25005 46.6 51.2 SI.? 51.2 54.4 55.1 55.2 55.7 55.8 55.9 56.6 Sb.? 51.1 57.1 51.4 54.1.L 2COO 49.0 52.o 53.1 54.4 56.1 5 ., 56.9 57.5 57.7 S7.8 58.6 58.7 59.1 5.4 5,.9 b3.1

* GE 57I05 48.0 52.8 53.1 5. 56.1 56.8 56.9 57.5 57.7 57.8 58.6 58.7 59.1 5.4 54.9 63.1GEt Io1 48.8 54.1 55.5 57.3 54.1 58.9 59.0 54.7 tO,0 60.1 60.9 61, 1 1 1. 2.2 1¢.°

0E 12001 49.6 56.6 51.4 58.4 60.3 61.0 61.1 61.71 2. 62?.2 ? l0 6. 3.5 11.o 64.1 64.1

GE 1000 49. 9 58.1 594 61 61.9 b.0 62.7 b.0 63.1 64.2 64.3 64.7 65.5 6t.6 66.3

GE 9u 1 5.6 58.7 59.8 61.s 61.4 64.1 64.2 64.9 C6.3 66.0 b6.9 67.1 67.5 67.9 68.4 b6.bGE 800 51.7 60.8 b.9 61.4 65.9 66.6 66.4 67.5 68.0 68.7 69.9 70.1 70.5 70.4 11.4 1.8GE 7 JI 53.8 61.1 62.6 64.? 66.9 67.5 67.? 68.b 69.2 10.0 31.2 31.4 71.8 32.2 7?.? 11.141 6U01 5,.6 62.4 64.0 66.1 8.b 69.2 69.7 70.6 71.3 12.4 735 71.8 79.2 14.5 35.1 17 .5

13 5UO I

.0 6.8 64. 4 b 69.1 7.4 31.1 72.2 12.8 14.6 75.9 76.2 36.8 31.1 71.6 1.1"3 4001 53.0 63.8 65.6 64.2 72.0 32.8 73.1 75.1 16.8 79.2 81.0 91.14 82.0 A2.4 ol.0 43.4

ut 3o(l 53.0 69.1 b5.9 68.5 1. 71.9 15.5 78.2 19.2 81.4 66.2 86.8 88.1 84.U 9 .0 43.7GE 2UOI 51.0 64.1 66.0 68.4 73.5 34.4 7s.0 78.8 80.0 84.6 88.2 88.4 41.1 92.5 E.O 97.nGE 11101 53.0 69.1 b6.0 68.4 is.5 74.4 76.1 38.9 80.3 84.7 88.1 89.0 41.2 92.6 46.8 13.J

L, k1 1 1.0 64.1 66.1G 68.6 13.5 74. 4 ,4 76.1 78.9 80.5 84.3 7 b8.3 89.0 91.2 92.6 96.8 IIJ.,

T03AL NUME8 OF 0BSERVATIONS: 910

I

uLObAL C IMRIOLOGY BRANCH R6LINTA FRELUENCY Of UCLORRLNLL OF CEILING VERSUS VISIBILITY

us A"'A C F07M HtOULY OASERRAFIONS

AIR .EATHER ERRICL/MAC

STIION NUMBLR: 1278'5 STAIION NA9: FAIRCHILD RFB WA PERIOD of RECORD; 70-b

MONTH: MAR HOURSILSII: bUO-040(3

IN I GL GL GE GE G GE GL GE GE GE GE GE GL G GE GEFLET I I . S 4 1 2 112 2 1 112 1 1/4 1 3/4 5/8 112 5/l 1/4 J.o.......................,...............................o.....................................................................

NO C(IL I 17.7 39.7 40.1 41.b 41.0 41.1 41.2 41.2 41.2 41.3 l.1 41.0 41.4 41.7 42.4 4d.9

GE 2001 4.5 4S.5 45. 46.5 46.4 46.4 47.0 47.0 7.0 4:7.1 1.1 4. 1 47.2 41. 4..2 44.7B 40 4 .9 46.1 46.9 47.2 4.13 47.4 43.4 47.4 47.5 47.S 47.5 41.6 4.0 48.b 49.1

GE I t000 49.1 46.0 46.5 47.3 47.3 47.4 47.5 47.S 47.S 47.6 47.6 47.6 47.7 4b. 1 4 .7 9. 2

GE [14001 5.42 47.1 47.5 4.2 48. 4 .5 4 .7 48.7 48.7 4B.8 44.8 44.4 48.9 49.2 4.9 59..GE 11001 48.4 50.1 50.8 1.4 51.7 51.6 51.9 s1.9 01.9 6 52.0 5.D 62.0 52.2 52.s 10.1 53.7

L t10100 52.2 54.6 55.1 5.7 56. 1 51 5b.2 SS.2 56.2 56.3 56.3 56.3 S.5 5b.8 57.4 5.GbE 90001 64.1 67.0 67.4 64.1 58. 54.5 S8.6 64.6 68.6 54.8 .8 64.8 58.9 59.2 09.9 60..GE 40001 69.0 62.0 2.6 2 6 .3.5 63.7 61.8 63.8 b.8 64.1 .I b64. . b .2 64.5 .5. 8 .76E 7CLI 62.1 65.8 66.2 61.3 67.3 67.4 67.6 67.5 67.6 67.8 67.8 67.8 68.0 64.3 '8.9 64.6GE 0bCo bS.2 66. b 67. 64.2 68.1 6 4. 68.5 68.5 8.5 68.8 68.8 4.8 68.9 69.2 69.9 70.4

GE S Du 66.4 69.1 69.6 70.3 70.6 70.4 70.9 70.9 10.9 71.2 71.2 71.2 71.1 I1.' 72.5 72.8LE 45001 66.8 70.4 71.2 71.8 72.3 72.4 12.5 72.5 72.5 72.8 72.4 72.8 72.9 73.2 75.9 74.4

F 40DO1 68.4 72.4 72.8 73.7 74.0 74.1 74.3 74.5 74.3 74.6 74.6 74.6 74.7 70.1 75.9 76.6GE 3IuOI 69.7 73.8 74.4 76.1 75.6 75.7 75.9 75.9 75.9 76.2 76.2 76.2 76.3 76.7 77.6 74.1

E TSOLD 70.6 75.2 7.4 78 77.2 77.1 77.6 77.5 77.6 77.8 77.8 77.8 78.0 74.3 79.1 79.7

GE 2SlOI 71.3 76.2 77.0 78. 78 78.7 78.9 78.9 78.9 79.2 79.2 79.2 79.4 79.7 80.6 41.1GE 20001 72.2 77.4 18.2 79.2 79.7 79.49 AD. I 80.1 80.1 80.4 40.4 80.4 80.6 40.4 41.7 42.3

oF 18001 72.2 77.4 78.2 79.2 19.7 79.9 40.1 80.1 40.1 40.4 40.4 80.4 80.5 80.9 aI.7 82.3GE 16001 72.3 78.U 78.7 79.8 80.3 80.6 AO.B 80.9 40.9 81.2 41.2 RI.? 81.3 81.6 42.6 B1.0C, 12001 72.9 78.8 79.7 80.4 8l.7 81.9 82.2 82 89 .2. 1 8 2.7 7 l.7 82.4 81.1 84.0 84.5

GE 10001 73.2 79.4 80.2 81.B 42.4 .6 83.2 83 . 83. 81.9 85 89 3 .9 8 4. 45.2 85.7GE 9uDI 77.5 80.2 81.1 82.4 83.7 83.4 84.1 84.1 84.3 84.7 84.7 84.7 84.8 85.Z 4b.0 86.bGE 8001 74.5 81.2 82.2 83.9 84.7 89.9 85.2 86.4 85.6 86.0 86.0 86.0 86.1 86.6 a7.3 47.4GE PuOl 74.4 81.4 82.4 81.7 84.9 86.2 RS.4 85.6 8.7 86.1 86.5 86.3 46.6 86.8 7.63 44.oF 6001 74.9 82.4 83.3 84.6 85.9 86.1 46.3 86.8 46.9 87.5 87.8 87.8 48.0 84.3 89.1 8.7

LE SOg 76.4 81.2 89.4 86.1 8.5 87.1 88.1 88.6 48.7 89.4 49.8 89.8 89.9 9U.2 91.1 91.b1L 4001 76.7 83.8 86.1 86.7 48.2 9,.5 88.9 89.s ?9.7 90.5 9. 91.1 91.3 91.6 42.6 93.1GE 10I 7.8 84.1 86.4 .4 4 49.2 89.9 90.4 91.1 91.4 92.4 93.1 91.2 91.5 94. 96.1 90.6

GE 2UOI 76.8 84.1 86.4 87.9 89.4 90.0 90.6 91.6 92.2 93.5 94.6 94.6 95.9 97.0 94.7 99.bGE lon 76.8 89.1 85.9 87.4 89.9 9U.0 90.6 91.5 92.2 93.5 94.5 94.6 96.9 97.0 98.8 13U.2

GE al 15.8 84.1 85.4 87.4 89.4 90.0 90.6 91.5 92.2 41.5 94.5 94.b 95.9 97.0 9.8 100.0.. .. o .. o.......... o ° o ....... °: .... . . . ... .. . .. o. .. ° . ..:.. o .... °...°.. .. .. . ..:. .. . . .... :.......

TO1L NUMBER OF O8ERVATIONS: 930

I

GLURAL fL IMAIOLOGY BRANCH ERCENIAbI FELUE NCY OF OCCURRENCE OF CEILING VtRSUS VISIBILIT vUSAF ETAC FROM HOURLY OB SVAT T NSAIR SEATHER SRICE/MAC

STAION NUMBER: 2785S STAION NAIL: FAIRCHILD AFFb WA PERIOD of RECORD: 7b-ASMONTH: MAR HOURSILST); 03U0-OU0

ooo .. . .. ...*. o~o... .. . ° oo .. ... • . .. ... • . .. o. oo= .. ., .. .. ..................... °....... ................. ...

([ILINS RISIBILITY IN STATUTE MILLSIN I GL 6E S1 u GE GE GE GE GE EL GE GE GEL EL GE ul

FEET I 10 6 S 4 3 21/i 2 1 112 1 1/4 1 31/ 518 1Ii / /16 I/A U. . .. .. .. ... . .o . .. .. .. .. .. .. .. .. .. .................. .......... .. .. . . .,...,.,...,.,.,.....o ... . .. . . .. . .,.. .. .. .. .,. . . .. .. . .. . . .. .. .. .. .. .. .. ..

NO EIL 47.5 48.5 48.6 48.1 49.2 49.2 49.5 49.5 49.5 49.5 49.1 49.7 49.9 SIO1 50.1 50.2

bE 200001 52.5 53.4 S3.5 53.9 54.2 54.2 54.4 54.4 54.4 54.4 S4.b 5.6 54.8 5.1 5S.I 65.2GE 180001 53.3 S4.3 54.4 SN.? 66.1 55.1 56.1 55.3 .7.3 56.3 55.6 55.6 SS.7 56.9 65.9 66.0

6E 16Coo 53.4 54.N 54.5 SN,8 5,Z 55.2 55.4 $5.4 55.4. 4 .4 5S.6 S5.6 65.8 56.0 56.0 5b.1GE 140001 53.9 54.8 54.9 55.3 55.6 55.6 55.8 55.8 55.8 S5.9 56.1 56.1 56.3 56.b 56.b 5b.7GE IZ00I 56.9 56., 57.u 57.3 57., 57.6 57.6 51 .8 5.8 58.U .2 58.2 58 .5 58 .7 SR. 58.8

UE O20 bO.3 61. 63.? 62.0 6.4 62.4 62.6 62.6 62.6 62.? 62.9 62.9 63.2 61.4 b3.4 63.1bE 90UO1 61.6 62.1 63.0 63.1 63.7 63.7 3.9 63.9 63.9 64. 64 2 6 .2 64.5 64.? 64.? 64.9GE 80001o 65.2 66.5 66.8 71 . 67 .4 61.4 67.8 6.8 67.8 68.0 68.? 68.2 6B.5 68.? 8 .7 66.9bE 701 9. 70.4 70.8 . 71.4 1.4 ; 11.8 71.8 71.8 1.4 72.2 72.2 12.5 72.? 12.1 72.9GE &UOO 1 0.5 73.8 72.2 72.5 12.8 12.8 73.2 73. 713.2 73.3 173.5 73.5 13.9 74.1 l4.1 74.

GE sUOf 1 72 14.5 4.8 72 16.5 7.5 79 75 .9 75.9 16. 0 16. 76.z 76.6 7b. 16.8 17.3GE 45UO 13.4 75.3 75.6 75. 76.2 16.z 7:7 76.1 1.7 76.8 77.0 77.0 77.3 77.5 11.5 17.1GE 40001 151 77.1 77.4 77.7 18.1 17b. 78.5 78.5 18.5 78.6 18.8 78.8 79.1 79.4 19.4 79.bGE 36601 76.8 79.1 79.5 79.8 80.3 80.1 80.5 80.5 80.5 80aI 80.9 80.9 81.1 81.5 81.5 .GE 3000 77.1 19.8 80.1 RO.4 80.9 80.9 81.1 81.1 81.1 81.4 81.6 81.6 82.0 82.3 '2.3 82.6

GE 2S0O 71.6 80.3 80.6 81.3 83.4 81.4 81.8 81.8 I.8 8'.0 82.3 82.3 82.1 82.9 82.9 83.1bE 20001 19.3 81.u 81.3 81.4 82.1 82.3 82.7 82.7 62.7 82.9 83.3 83.1 83.5 83.8 81.8 84.3

SE 1SU 18.3 81.1 81.6 81. 4 82.6 82.6 83.0 83.0 83.0 83.2 81.4 83.4 81.9 84.1 84.1 84.3

GE 15001 18.5 81.6 82.0 82.9 83.0 83.0 83.4 83.4 83.8 83.8 84.0 84.0 89.4 84.6 84.6 84.4(.1 1201 79.8 81.2 83.8 84.2 84.8 84.8 85.3 85.3 85.3 85.6 85.8 8S.8 86.2 86.6 86.5 P6.?

GE 111001 80.3 84.2 84.4 85.4 86.3 86.3 86.9 86.9 86.9 87.2 87.4 87.4 81.8 t3 .l 88.1 86.1GE 4001 80.9 84.9 85.1 86.1 87.1 87.1 87.6 87.6 81.6 88.0 88.2 88.2 88.6 88.8 68.8 84.3GE 8601 81.0 86.2 85.9 86.3 87.1 81.3 88.0 88.0 88.0 88.3 88.5 88.5 88.9 89.1 89.1 84.4

GE 1u0! 81.1 85.5 86.2 86.8 88.2 88.2 88.8 88.8 88.8 89.1 89.4 89.4 89.8 93.0 90.3i 90.2

GE 6U101 81.4 86.2 87.0 EL.1 89.2 89.2 40.0 90.0 80.0 90.3 40.5 90.S 83.0 91.2 41.2 91.4

6G SUOI 81.6 81.1 81.8 88.6 90.1 90.6 1.4 91.5 91.5 91.8 92.0 92.0 92.5 92.1 92.? 9t.96E 4001 81.6 87.8 88.6 89.5 91.1 91.5 92.4 92.5 82.5 92.9 9U.2 91.2 918 4.2 94.0 94.2E9 301 83.7 88.3 84. 0 8 8 0 92.1 93.4 937 93.7 94.3 .2 95.2 96.1 4 .3 9.5 96.8GE 2001 83.7 88.6 39.4 93.2 42.6 92.9 94.3 94.6 94.7 95.4 96.2 96.2 97.6 98.1 98.1 89.1GE 101 81 88.6 89.9 911.2 42.6 92.9 94.3 94.6 94.7 96.4 96.2 46.3 91.7 98.2 89.3 , 1 0.4

GE ni 81.4 98.6 89.9 96.1 92.6 92. 9 9.3 9 .6 44.7 96.4 96.2 96.3 91.1 98.2 99.4 13.2

TlAt NUMBER Of ORSERRATIONS: 930

6[ 30 16 83 :9. 9 23 9. .' 943 9 65 9

G42i 86 89. . 4.3 9.6 .7 914 9. .2 976 q~ 8.7 9

C, ~ ~ ~ ~ ~ ~ -faU 86 8- 26 9. 4b 1 54 6.2 9 s 9 81 94 0.

GLOBAL CLIMAIOLOY BANCH 4[RLWLN 1 FkL

1ULNCY O0 OCCURRNCE OF C ILING VERSUS VISIBILITY

USAF IA C F WO0 HOURLY 0OS IRVATIONS +

A I R tI A H I I I S R V I C / M A C

ITAION NUMIBR 127851 SIAIION NAE: FAIRCHILD AFB lA PERIOD Of RECORO: 76-b,MONTH: MAR HOURS(LSI): JQOD-O21U

...... ~~~~~~~~ .* .. . . . .. . . . .. . . . . . . . . . .. o ... . . . ... . . . . . .°. .. .. . .. .. ..... .* . . . . .. .o. .. . . . .. . . ...CE L INS RISIBILITY IN STATUTE MILES

IN I C GE GE t 1 GE GE GI OC GE GE GE GE GE GE GL EFEET I 0 t 3 2 1 2 2 1 112 I l/N 1 51 4 6/ 1/2 5/16 I / 1. . .. .. .. .. . .. . . .. . .. ... . .. . o .. .......................... .. . . .o. ... .. .** . * * * * ° .. . .. .. . . .. . . . . .. . . . .. . . . ... .* . .. .**. . °. .. . .. *. °°. **.. *°. °o..*

NO CLIL I S1.S 54.3 54.3 54.4 54.6 54.6 64.6 S4.6 54.7 15.1 56.1 55.1 65.3 56.3 5,.4 6b.4

GE 20001 68.' 59. 9 .59.6 14. 59.9 69.9 S9.9 59.9 bO0 60.1 60.1 60.3 61 .6 6 .5 b1.6 b0.bCd 1800OI 69.4 6.2 bO. 60.3 .S 6 6 60.5 0.b 61.0 6:.0 b.0 61. 61.2 61.1 b:.3

b 001 5 9.4 b1.2 60.2 60.3 60. 5 60. 05 0.5 .0. bl.O . 60 61.0 61.2 6t.2 b6.1 6 .1E1 40ool 60.1 61.0 61.0 61.1 61.3 61.3 61.1 61.3 61.N 61.7 61.? 61.7 61.9 61.9 62.0 62.0GI 120001 62.? 63. 5 63. 63.1 64.0 64.0 b.0 4.0 b4.1 64.4 b4.4 64.4 64.6 64.6 b.1 4.7

GE I0000 bb. 6 7.4 b74 6.6 68.0 b8: 6 8 68 68 68.5 b8.6 68.6 68.9 . 8 b9.0 b.3GE 90001 6.8 68.9 68.9 69.1 b9.6 69.6 69.6 70.0 10.1 10. 11.4 10.5 70.b 70.6

6 t 80001 11.2 72.4 72.4 72.6 12.9 72.9 12.9 2.9 73.0 73.4 73.5 10.6 13.9 14.0 74.1 74.1E 70UD1 4.b 75.8 75.8 7.3 16.1 76.3 76.6 6.6 76.6 77.0 77.1 71 1 1 1. 77.5 77.6 73.6

GE b00 75.6 76.9 16.9 71.1 77.4 77.4 77.5 71.6 77.6 78. 1 78 78.2 719. 186b 78.7 78.1

GE 60001 1.1 18.7 78.1 78.9 19.2 79.7 79.4 79.4 19.5 79.9 80.0 80.0 80. 3 44 90.6 0.*GE 4510 77.8 79.5 79.6 79.7 8O. 80.0 80.1 80.1 80.2 80.6 80.8 80.8 81.1 8 1.2 1.1 91.3

E 40001 99.N .3 81.3 81.a 81.8 81.8 81.9 81.9 82.0 82.6 82.7 82.7 60.0 93.1 833 83.GE 300 80.8 81. 0 83. 81. 83.6 83.5 81.7 83.7 83.8 840 84.4 84.4 84. 7 84.8 86.1 46.1GE C000 .2.6 84.8 84.8 85.2 85.5 85.5 85.6 85.6 86.1 86.2 86. 3 9.1 8b.7 8b.b d7.0 87.a

GE 2SC60 81.8 .8 86 87.2 81.2 81.3 87.3 81.4 880 88.1 88.1 88.4 96.6 68.7 88.7GE 0001 64.6 8.1 87.1 88.4 88.6 88.6 88.6 88. 88.7 89.2 89.4 89.4 89.7 89.8 90.0 9U.0bE 1801 84.6 88.1 88.1 88.4 88.8 8.8 88.9 8.9 89.0 89.6 89.1 89.7 90.0 90.1 90.0 90.3

GE 6 01 I S.2 89.0 89. 89.5 89.9 89.9 0. 90.0 90.1 90.6 90.8 90.8 91.1 91.2 91.9 91.8

GE 12U0I 85.4 89.2 89.4 89.1 90.1 90.1 90.? 90.2 90.3 90.9 91.0 91.0 91.3 91.4 9.6 9.b

GE LDO01 86. E 90.3 90.4 90.? 91.3 91.3 9.4 9',4 91.5 92 .2 92.3 92. 92.6 92.1 92.9 92.9GE 900, 86.0 904 90.5 91.3 91.4 91.4 9. 91.6 9 17 92.4 92 9.5 92 92.8 9/. 931 93GE 900 86.1 91.1 91.2 91.6 92.0 92.0 9?.3 92.3 92.4 93.0 93.1 91.1 93.4 93.5 91.6 93.6GE 1U0 96.1 91.4 91.6 91.? 92.4 92.4 92.6 92.b 92.7 93.3 91.4 91.4 93.8 91.? 94. 94.1G.F 601 86.s 91.8 92.0 92.6 93.0 90.1 93.9 934 94.3 9..4 9.4 94. 7 99.8 96.1 95.1

8 510 65 920 92.3 92. 93.2 93.3 93. 91. 9 94. 94.7 94.8 94.8 9S. 96.3 96.6 96.6GE 400 86.6 92.2 92.4 92.9 93.5 93.7 94.1 94.4 94.5 95.4 95.6 95.6 96.9 96.1 96.2 96.2GE SLOE 66.5 92.4 92.8 93.6 94.1 94.4 95.1 95.6 95.8 96.7 97.1 97.1 97.6 91.6 97.8 91.8UT 21 86.5 9z5 92.9 93.1 94.4 94.6 95 3 96.0 96.2 91.1 97.5 97.5 48.6 99.2 69.6 99.6GE 100 66.5 92 .5 92.9 91.7 94.5 94.6 95.4 96.1 96.3 91.2 97.6 91.6 99.6 99.4 100.0 .00.0

GE 01 96.5 92.5 92.9 93.1 94.6 94.b 95.4 96.1 46.1 91.2 97.6 91.6 98.6 99.4 10O.O 132.3


If

GLOBAL CLIMAIOLOGY BRANCH aE RL NIAG7 FNE LUENCY 01 OCfCURENCE OF CEILING WE RSuS VISIbIL ITT YUSAFE IAC F0M HOUELY OESERVAIOSAIR .ETHER SERVICL/MAC

SIATION NUMSLR: 127854 STATION NALq: fAIf C.IL ALAfB WA PLRIOD OF ALCORD: 76-bSMONTH: FEB HOURSLSTI: ALL

CF IL ANG A14181E377 14 STATUTE MILES

IN I GE GE GE GE GL LE GE GE GE GE GL GE GE bE GE uLFEET I 10 b 5 4 3 2 11 2 i /2 1 1/4 1 31/4 5/A 112 5/l 1/4 a.......* .... ..*..,,...**°.........*.....,..........°*........,........o....... ,,.......*,......*.....,.......................,.......*

N0 CE IL I ?6.2 Z7.3 21.4 27.S 271.8 21.8 27.9 26.0 28.1 28.2 z8.1 28.3 28.4 ?8.4 Z8.5 26.b

UE 200001 33Z 32. 7 2.7 32.a 33.0 33A 3 2 33.3 33.4 33.6 33.7 33.7 33.8 33.9 349. 34.1GE 100O01 31.b 13.0 33.2 33.3 33.5 31. 33.7 33.8 33.9 34.1 34.2 34.2 34.3 14.. 34.S 34.6G E 160001 31.8 33.2 33. 4 33.5 33.7 33.9 34.0 34.1 34.1 34.4 34.4 3 .5 34.5 3.6 34.A8 34.9

C 14000 1 33.1 34 .b 14.8 14.9 35.2 35.3 35.4 35.4 35.6 35.6 3S.9 35.9 36.3 3b. 3b .2 3b-.Gt ICOO1 36.5 38.0 38. 38 .4 38.6 38.7 38.8 39.0 39.0 39.3 39.3 39.3 39.4 39.5 39.6 39.b

LE iOOUO1 39.4 41.1 41. 4.5 1.8 41.9 42.0 42.2 42.2 422.5 42.4 2.b 42.7 62.1 .2.9 43.a(It 90001 43.4 42. 4.4 42.1 4.9 43.1 43.1 4 3.3 43.3 43.6 43.6 431.7 43. 8 43.68 4.0 4 4.1GF 80001 43.6 45.4 45. 46.3 4b2 48.4 46.5 46.6 46.7 46.9 410 47U 41.1 I7.2 *7.4 47.5GE 7000i 41.2 49.5 49.7 49.9 50.2 s0.4 50.5 50.6 50.7 51.0 51.0 1.1 51.1 1.2 514 41.4GE bo00 48.6 41.0 51.3 5I.b 51.9 52.0 52.1 42.3 42.3 42.6 42.7 42.7 52.8 42.9 53.1 43.2

GE 50007 1.3 54.0 54.3 54.5 549 553 55 ? 55.4 45.5 55.7 7 .8 5.8 55.9 56.a S.2 46.3GE 4500| 57.7 I .5 55.8 46.1 56. 56.7 46.8 57.0 57.0 57.3 57.4 57.4 57.5 51.b 57.8 57.9G 4 0001 44.7 41.4 47.7 S8.1 58.5 58.7 58.4 59.1 59.1 S9.4 59.4 59.5 49.6 44.1 59.6 6.3Gf 34301 44.4 56.8 49.3 49.6 6". 60.2 b0.4 60.6 60.7 60.9 6;.0 61.0 61.1 61.2 61.4 61.6GE 3Cul7 5.1 b.2 61.7 62.1 62.7 62.9 63.1 63.3 b3.4 63.6 6.7 63.7 63.8 63.9 64.1 64.3

LE I40 I 5.7 63.4 64.G 64.4 6540 64:3 65.4 5.1 65.8 66.:1 661 66.2 66.3 66.4 bb6 bb.7GI 20001 o 5 64.7 66.4 66. 67.6 67.9 68.2 68.4 68.4 68.7 68.8 68.9 69. 0 69.1 6.3 .4bGE 18001 63.4 E6.3 67.0 67.4 68.3 66.6 68.4 64.1 69.1 69.5 6.6 69.7 69.8 69.9 70.1 70.2G, 1SGOI 6. 0 6.4 68.6 69.4 70.4 70.7 71.0 71.2 71.3 71.6 71 .91. 72.0 72. 72.3 72.5L7 2U(11 62.8 I 4.a 10.0 r0.1 11.9 72.2 72.6 72.9 12.9 73.4 73.4 73.4 73. 71.6 74.0 74.1

tE 101 63.4 7,3.6 IUb 1., 7. 71.6 73.8 . o4 7 75.0 74.4 1 6 15b 5 8 74.9 7.0 7b.2GE 407 64.0 11.b 7.1 13.4 74.9 4.2 75.7 76.1 76.3 76b 76.9 76.9 77.1 77.2 77.4 77.5G 80a o 4.b 172.4 1 1 5. 76.1 76.b 77.0 77.4 17. 78 74 78.4 78. T. 78.9 79.0L I001 68.4 13.3 74.6 74.4 77. 77. 78.2 78.7 78.9 74.6 78.8 79.8 80.0 80.1 60.3 80.4(,I 61.7. I 6.N .4 14' . 16.3U 77.1 08.4 74.3 80.2 80.8 81.0 81.6 82.0 82.1 82.0 82.4 82.6 82.7

bE lolI 6, 6.31 1,.. 17., 76.a 613.9 81.4 82.4 83.2 83. 84.5 85.0 8.1 I 5.3 84.4 84.7 84.8' t 6.1 76.4 78.t 80.3 82.7 83.4 84.7 85.6 84.9 87.4 88.1 88.2 8 B 89 . 88.9 89.1

.l , . I. I 71.I 19.3 81.3 84.2 84.9 86.7 88.0 88.4 90.9 92.0 92.3 93.3 93.7 94.2 44.4',: 'Lf ,1 , 7 17?.3 74 81.1 84.4 85.3 87.1 88.5 89.0 92.3 93.6 94.1 95.7 9b.5 98.0 98.7i (t tr 1 . I ? .1 79.4. a1.1 84.4 8.3 a7.1 88.6 89.0 92.1 93.8 94.2 95.8 96.9 48.5 133.0

I. V tI . 1. 79.4 81. 84.4 80. i7.1 88.6 89.0 92.1 93.8 94. 95.8 96.9 98.5 IOU.0.................................................. .. ..... .. ............ ............ °... *.... .. , ... ...... . . .~

1AI N 13(8470 II 07S|18iT1ON S b14

4&

6L de AL CI MA101OGV MRA NCH /EtC1NIAG[ FfEQULNCY Of OCCURRENCE of C IL IN VERSUS V151 ILITYUSA[t TAC F0 R 0HOURLY OSRVATIONS

AIR7 (EAIMP 5.ERVICE/MAC

SAT I(3 NUMHLR: 721855 5 9AOSN1A: FA RCHILD Af H WA PERIO1 OF RECORD: 76-b5MONH: FL HOU RS(LST): Z|iO-23U0

IN 9 0L & GL 61, G If Ulf GE (E GE GL G GE 6f GE SEFEE I r U b 5 4 3 2 1/2 2 1 112 1 1/4 1 3/9 5/3 1/2 5/lb 1/ 0

.......... o......*.... .. oo ................... . °o ........... . °...... .. oo°°....o° ...... . ° .......... °°..... ...................

NO CIIL I 31.9 3.5 33. 33. 3 33.6 13.5 33.7 33.9 34.0 34.2 34.3 34.4 34.5 39.5 34.5 34.7

1 120009 36.4 j.2 38.3 39.3 38.3 3b.3 38.4 39.6 39.9 39:9 39.0 391 39.2 39.2 39.2 39.511 19001 37.1 38.9 39.0 39.3 39.0 39.0 39.1 39.3 39.5 39.6 39.7 39.9 39.9 39.9 39.9 40.eG 16IE01 31.5 39.2 39.3 39.3 39.3 39.3 39.5 39.7 39.9 39.9 40.0 90.2 40.3 9U.3 40.3 40.5GE 140 01 38.2 39.9 90.0 4U (3 0. 0 40.0 40.2 40.4 90.5 90.6 40.9 40.9 41.0 41.0 41.0 1 . 2SE 120001 40.9 92.6 82.8 92.9 92.8 92.8 92.9 93.1 43.2 43.3 43.5 93.6 93.7 HI.? 93.? 93.9

(.11) 00031 93.7 45.? 45. 45:1 45.9 95.8 45.9 4b.? 46.3 46.9 96.5 9b.6 :6.9 46. a 6.8 91.0G L 900a1 45.2 91.5 97.6 97.6 93.6 97.6 47.7 93.9 8.1 99.2 99.3 484. 4.5 .485 49.5 48.8G E 80001 9.9 5151.9 52.1 52.2 52.9 52.5 52.7 52.9 52.9 52.9 53.0bE D0UG0 52.9 55.9 55.9 56.1 56.1 56.1 56.2 56.4 56.5 56.8 56.9 57.0 57.1 51.1 57.1 51.4GE 60001 54.0 51.5 57.6 57.7 57.7 57.7 57.. 58.2 5.3 59.5 59.7 S8.9 58.9 59.0 59.0 59.2

bE 5000 57.b 61:] 61.2 61. 1.9 61.9 61.5 1.8 62.0 61. 62.3 62.4 62.5 62.7 62.1 62.9SE 95001 58.9 62. 2 62.2 62.3 62.3 62.3 42.9 62.9 62.9 63.1 63.3 63. 635.5 63.6 63.6 63 .GL 40001 60 .8 6o. 69.5 69.9 69.9 8 6.9 65.3 b.9 65.6 65.7 65.8 6b.0 6b.I 66.1 bb.3

t' 35009 62.7 66.4 66.8 6.3 67.0 67.0 67.1 67.5 67.6 61.9 690 69.1 68.2 69.3 68.3 6668. 3040 69.9 69.9 68.9 69.1 69.1 69.1 69.3 69.6 69.7 70.U 10.1 70.2 70.3 70.4 70.4 70.?

GE 201 65.6 69.8 70.3 70.6 70.6 10.6 70.9 71.3 31.4 71.6 71.7 71.8 72.0 1.1 2.1 12.3SE 20(01 67.9 72.9 33. 3.5 1.1 7 79.1 79.4 74.6 74.8 749 ?5.0 15.1 75.3 75.3 75.5bE 18001 69.0 73.6 1 4.1 1 39.9 19.9 19.9 75.1 75.3 75.5 75.6 75.? 15.9 76.U 76.0 76.2bE U500 b9. 75.3 76.1 76.3 76.9 76.4 76.8 77.1 77.3 77.5 77.6 77.3 77.9 78.0 1.0 1.2(E 12001 70.4 lb.6 7.9 77.5 77 .7 37.3 79.1 79.6 78.7 79.9 79.0 79.2 79.3 79.9 19.4 79.6

SE 10001 71.3 78.2 19.2 79. 79.6 79.6 90.0 80.9 90.6 40.9 90.9 1.0 :1.2 91.1 91.3 93.5E 9U0 1 9 9.9 90.1 90.3 90.3 40.7 91.2 81.3 91.5 91.6 93.7 91.9 92.0 92.0 92.2

1E 001 72.0 79.6 90.7 90.9 91.9 91.9 91.7 92.2 82.3 92.6 92.7 92.9 93.0 93.2 93.2 93.4SE 7(00 ,2.1 79.7 80. 91. 91.5 91.5 93.1 92.6 92.7 82.9 83.2 83.9 83.5 83.6 63.6 93.9IE 600 172.3 90.6 81.7 a 82. 2.6 82.7 83.4 84.2 84.5 84.6 84.8 85.0 85.2 85.3 85.3 95.5

GE 5U0 73.0 92.3 3.5 93. . 4.5 99.3 95.4 6.2 66.3 96.9 91.2 99 9 7.5 97.6 91.6 Y7.9SE 9009 73.3 92.9 99.7 85.) 95.7 96.1 97.9 99.5 99.6 93 95 89.9 99.9 90.3 90.1 90.3SE 3001 13.3 83. 85.5 96.3 96.9 93.2 8.9 90.2 90.3 91.6 92.2 92.6 93.6 99.0 94.6 99.9SE 2001 13.3 a3.3 95.6 86.1 96.9 91. 89.2 90.1 90.9 92.6 93.3 93.9 95.9 96.9 99.4 99.1SE I01 3.3 93.? 95,6 6.1 86.9 87.. 89.2 90.8 91.0 92.7 93.5 99.1 96.1 91.5 99.1 I 3.0a

E 0. 91.5 83.1 85.6 86.1 86.9 81.% 99.2 90.9 93.0 92.7 93.5 94.1 96.1 97.5 991. 100.o.. o . ...... ..... o° ° .°.°. .. .. ... . .. .. . .. . .. ... .° .. .° . o ° . . ° . . . .. . . . . . . . . . . . . . ... .

39AL NUMBER OF OBSERVATION5: 049

9i

4 -

LOdAL CLIMAIOLOGY BRANCH ERNTACCLT0E PHEENCy OF OCCURRE NCE OF C ILIN, 8ERSUS VISIbILITTUSAFETAC fROM HOURLY 06S RVAI INSA1 .IATHER S0RV3CE/MAC

STATION NUMBLR: 72785 STATION NA441: FA1RCHIL AFS WA 118 10 8LCO80: 71-ISMONTH: F0 HO U SLS): I8U9-20U0

..o .oo , ... o... .. ... .. *. .. .. ... .. ... ... .. ... • ... .. , . .. ........ . ........................................

CELI.10 VISIBILITI IN SIAI MILESIN I GE GE GE GE 6E G0 0 G ( GI (, ( E G L[ GL GE

F1E3 I "0 b S 1 2 1/2 2 1 1/2 1 1/4 1 1/4 516 112 5/1I 1/4 U............ •.... .. o.. , ............... ,,........•.................. .o.........o.................................................

NO CLIL I 33.2 33.b 33.8 33.0 34. 14.3 34.3 34.0 1 .1 34.3 34.1 34.1 1 .3 34. 34.5 34.5

ut 200O| 18.8 19.2 39.5 3: 39.9 14. 9 19.9 19.9 9. 9 39 9 399 39.9 39.9 39 . 40.2 40 2GE 1bO0 40.0 40.5 40.8 4U.3 41.2 41.2 4.2 41.2 41.2 41.2 4 1.2 4.2 .12 41.2 4.15 41.5G1 1bOUQ| 40.2 40.b 40.9 43.: 41.1 41.1 41.1 41.1 41. 3 41 41.3 43.1 1 4 .1 4 1. 4 1 .b0E 1o01 42 .0 0 2b 42.9 43. 41.1 91.3 41.1 41 . 93.1 43.1 41.1 43.1 41.3 4 1.1 41.4 ..0E I20oo0 46.2 46.8 47.] 47.1 4.5 47.0 47.0 41.5 4 7. 5 475 41.5 47.5 4 .0 47.5 47.7 47.7

UL I10001 49.7 01 000 00.6 51.1 53.0 01.0 51.0 51.0 51.c 51.0 1.0 01.0 01.0 SI.? 1.2GE 90O1 00.4 03.0 53.2 01.S 01.7 01.7 01.7 01.7 63.7 01.7 01.7 3.7 051.7 51.7 S3.9 .5403E 8001 01.7 04.4 04.7 04.8 00.1 00.1 00.3 00.1 50.3 5.1 5.1 00.3 00.1 50.1 5.4 00.401 Io00 57.0 09.1 58.5 5.7 59.0 59.0 09.0 .0 09.0 59.0 59.0 59.U 59.0 09.U 9.2 54.21 E40001 08.4 09.7 0. 0 4.3 40.5 60.5 40.5 40.5 bO.5 0.5 40.5 40.5 40.5 6U,. 40.8 b5.

ul S0000n 42.0 b3.4 43.4 4 . 44.1 44.1 643 64.1 b4 3 b. b4.3 64.3 4.1 64.3 04.5 b4.51 45'On b3.0 44.4 647 64.1 40.4 60 40.4 40.4 65 4 605. 4 40. 4 5 S. 4 bS4. b540 b0.4 b50.

01 40001 40.3 bb.9 67.3 47 . 47 .d 47.b 67.8 678 67.1 67.8 47.8 67.8 7.8 47.8 48.1 b8.GE 3001 G1.3 48.2 48.4 6.b 49.1 49.1 49.3 49.1 .9.3 49.1 49.3 49.1 49.3 49.1 19.4 49.4

IE 300n1 6.; 71.5 72.U 72.2 72.8 72.8 72.8 72.8 72.8 72.8 72.8 72.. 72.8 72., 73.0 7.5

01 2001 70 4 7 7 75 1 759 75.9 70.9 70.9 70.9 70.9 75.9 75.9 70.9 70.9 76.3 74.1

G78. 78.4 8.4 73.4 71.4 78.4 78.4 78.4 78.4 78.8 78.5(f 18001 72.3 744 77.3 77.0 78. 78.4 78.4 78 .4 78.8 79.8 78.8 78.8 78.8 79.0 79.0E Isoo 13.5 78.1 79.2 79.5 80. 4 8 0 8 £0.' 80.1 £0.8 80.1 80.8 80.8 R 1.0 £1.0AE 12101 74.3 79.4 81.4 80.8 82. 0 82 82.3 82.3 82.3 82.1 82.0 42.4 82.4

b0 1000! 74.8 83.2 82.0 82.13 83.0 83.0 83.6 1.6 .4 84.0 £4 0 84 0 84.0 84.0 8.2 84.26E 9uo 70.5 82.1 13.e 83.4 84.8 84.8 4 9 84. 49 £5.1 5.3 8.3 85.1 80.3 10.0 80.0GE 8on0 75°5 82.7 81.4 84.1 80.1 80.1 80.4 80.4 15.4 84.0 860 £60 £60 84.0 84.2 84.2GE 700 75.4 81.1 4.2 84.7 84.0 8..0 841 863 £4.1 84.9 8. 9 8.4 84.9 84.9 47.2 87.2GF 4001 74.4 80.3 84.0 87.2 88.0 88.4 89.0 89.4 89.4 90.0 90.0 90.0 90.0 90.0 90.2 902

oE 5001 76.8 84.1 87.3 B£.3 89.0 89. 903 90.7 90.7 91: 91.3 91.3 91.1 913 81.0 91.0OF 4001 76.9 87 . 88 89.4 91.8 92.0 92.18 93 93.2 94. 94.3 94.3 94.3 94.1 94.1 94.361 lUOl 74.9 87.9 89.1 90.3 92.6 92.1 94.3 90.1 95.3 96.7 94.9 97.1 91 971 97.4 91.,CE 2001 74.9 87.9 89.3 90.3 92.7 92.9 94.2 952 90.2 94.9 97.2 97.1 91.8 97.8 94.7 98.7,: I0 U 01 6.9 87.9 89.3 93.1 92.1 92.9 94.2 95.2 95.2 96.9 97.2 97.3 97.8 98.4 99.1 100.0

01 IT 76.9 87.9 99.3 90.1 92.7 92.9 94.2 90.2 9?.2 96.9 97.2 97.3 97.8 98.4 99.1 100.0o....o. .. ooo, . ..... .,,.....o. .. o, ...... ,..... ...... ,... ........... ........... o.....o... ............................. ,o.


uL06AL CLIMAIOLOGI BRANCH flRLLNIAUF FRLiJENCR OF OCCURRENCE OF CEIL IN VERSUS VI5BILITYUSAF TAC FROM HOURLY O8SERVAtIONS rAIR 41 ATHER SERVICE/MAC

STATION NUMiLR: 727855 STATION NA4E: FAIRCHILD AFR WA PERIOD OF RECORD: 7-ASMONTH: FEB HOURSILSYI: 1500-1700

CE II.14 VISIVILEI IN STATUTE MILES

IN I GL GE t LE f E E GL uE GE GE GE GE GL GE GE GFFELI I 1 5 1 2 112 2 1 112 I I/N I T/N 5/8 1/2 S/It 1/4 0

..... .... ° ..... °..... .......... °........... o° ........... .. o ......... °.... °o°..... ...... •........ .o.... ....... •............. ....

NO CEIL I 27.3 28.7 28.1 29.3 29.1 29.1 29.1 291 19.1 29.2 29.2 29.2 29.2 29.2 2.Z

GE 200001 3:.6 36.5 3b.5 3b.7 3 . 6. 36.9 36.9 36.9 31.0 37.0 37.0 37.0 I7.0

37.0 17.0GE 1800 35.2 .: 3z 7.2 3.5 31.6 17.b 17.6 31.6 , 7.6 37.7 37.7 377 7.1 37.7 37. 7 3 71bE 160001 35.8 37.6 37. a. 82 8.2 3 ..2 18. 2 38. .2 58°A. 16.0 38. 18.3 38.1 3A.3 38.3 36.3

oE 140001 38.2 NO.6 90.5 4U. 40.9 4U.9 40.9 4CO.9 409 NI . 1.0 NI . 41.0 1I.0 NI.0 41.0tE 120001 41.6 43.9 45.9 44. 44.3 44.3 44.3 44.3 44.3 44.4 44.4 44 .4 44.4 . 44.4 44.4

bG lOODGOl N5. 8 A. 498 NA. : 9.6 4A. 8 66.6 48.b 4,.8 48.R 48.8 4V.A N8.8 8A.6 NR.A 4a.AGL 90001 4. 499Z 49.5 49.7 N9.8 V.8 49.8 49 9.8 49.9 9.9 49 .9 4 9.9 49 N9.9 N.9b. RebO 50.4 54.1 53.4 sI. ST.! 53.7 5..7 53.7 53.7 3.6 S5. 58 S3.R 53.A 53.8 53.8

bE 70001 5.4 58.4 58.1 58.9 59.0 59.U 59.1 59.1 59.1 S9.2 S9.2 89.2 59.2 59.2 b9.2 %s.2GE 60001 S6.5 S9.t 59.6 60.1 60.2 60.2 60.3 60.3 60.3 60.4 60.4 60.4 b0.4 60.4 b0.4 bJ.4

oF SCoOl 59.1 62.1 62.5 62., 62.9 62.9 63. 61.1 63.1 63.3 63.3 63.3 63.3 61.3 63.3 63.3t 4UO b 0.! 69.0 64.2 64 64.5 64.6 64.8 64.6 64.8 64.9 b4.9 64.9 6N.9 4649 b69 649

UT 900(11 62.8 t6.3 66.5 6,.9 61.0 67.0 67.3 67.3 67.3 67.4 67.4 67.4 6,4 67.4 67.4 61.4

E 35 c1 4.3 .. )) 6. 2 6 68.7 66.7 68.9 6A.9 68.9 b9.0 69.0 b9.0 69.0 69.0 69.0 69.0GE ,30S 1 67.0 11.1 71.7 72. 72.6 72.7 12.9 73.0 73.0 73.1 73.1 73.1 73.1 71.1 1.1 73.1

GE 25001 69.0 1.6 14.1 71.1 75.1 75.3 75.5 75.6 7S.6 75.9 75.9 75.9 75.9 75.9 75.9 75.9GE I00 n| 1).6 15.1 1 76. 17.0 .1 77.4 77.6 7.6 780 78.0 78.0 78.0 78.0 78.0 76.0GE 19004 71.1 76.1 76.7 7. 1 78.1 162 78.4 18.1 78.7 79.0 79.0 79.0 79.0 79.0 79.0 79.0GE Ilull 72.4 77.9 78.6 79. .80.8 80.9 81.2 81.4 81.4 81.9 61.9 81.9 81.9 81.9 81.9 81.9

GE |oD 17.9 40.2 81.0 82. 8 A3.4 83.5 83.7 8q.0 84.0 84.5 84.5 86.5 84.6 84.6 64.5 84.5

LE 10001 74.2 81.7 62.8 84. 86.6 85.1 86.0 86.6 86.5 86.9 86.9 86.9 86.9 86.9 66.9 86.9Po 'aol 76.6 82.2 83.3 84.5 66.1 86.2 86.5 86.9 86.9 87.4 n7.4 87.4 87.4 81.9 87. 87.4

GE soul 76.9 82.9 84.0 86.2 66.9 81.0 87.3 87.8 67.9 88.3 88.3 88.3 88.3 86.3 88.3 66.3E 70 75.4 81.9 89.9 8.1 88.0 88.1 88. 5 8 89.5 895 89.5 89.5 69.5 89.6

uf 600 1 75.9 84.6 86.2 87.9 69.8 89.9 90.7 91.2 91.4 92.0 92.2 92.2 92.2 92.2 V2.2 92.2

L U0I 76.9 85.2 87.2 8,.9 91.2 91.3 92.1 92.6 92.8 93.6 94.1 94.1 94.3 94.3 94.1 94.1GE 4DO 75 .9 85.5 87.6 90.3 92.6 92.6 93.6 94.1 84.3 95.6 96.3 96.3 96.6 Nb°b 96.6 96.601 3001 15.9 85.5 87.8 90.3 92.7 93.1 93.9 94.3 94.6 96.9 97.8 91.6 98.6 9b6 98.E 96.6

I. 200 1 5.9 86.5 87.6 90.) 92.8 93.2 94.0 94.6 84.8 97.2 98.2 98. 99.4 99.4 99.6 V9.6GL 1001 75.9 85.6 87.8 90., 42.6 93.2 94.0 94- 94.8 97.2 98.2 98.2 99.5 99.5 99.6 101.3

UT 0. 7%.9 85.5 87.8 90.3 92.8 93.2 99.0 .946 94.8 97.2 98.2 98.2 99.5 99.5 99.8 100.0. .. .° .. . . . .° o.. . .. . . .°. ........... °...... °. ° ° ..:. . ° . ........ ° ° o °..... 9.., .. .o .. .... ..

TOTAL NUMBER OF OBSRATI0NS: 849

4

LOb AL CLIMATOLOGY BRANCH L[RUNIA~,t fkQUtNLY Of UCLU.P(hL Of LtILIN6 0 SUS VIS 1I L I1Y rU A F IIA C F kOM i ukL Y 01, k AT V~ IONS

A1 ItAH IR tSRVICt/MAC

SiATION NUMBLQ: 727856 %CATION 7A88: FAIRCHILD 8f8 WA P1IR02 OF RECORD; 7b-85MONTH: FEB HOURSILSII: 120(0-1460

ISIItL INC V I I V IN STA TUI T MIL(S

IN I [ (AI GA E GLt IA 1, 9 (A 0A " 1 L 1LA (A LGI AIFEET I "I b 63 1/2 1 1 112 1 I14 I S% /b I /2 51b 1/4 u.... o.......................................... . o.... .... o......•........................... * .... .*. o°.....*........... ..... *

NO CElL I 22.3 24.I 24.5 24.5 24.9 24.9 24.9 24.9 24.9 24.9 24.9 24.9 24.9 24.9 24.9 24.V

(t 2uO O 28.3 31.11 3lJ1.3 1 1.1 II. (.1 31.7 31.7 11.7 31.9 31.9 31.9 31.9 31.9 11.9 31.9It 18000 28.4 31 11.9 31.. 31.4 31.8 31.8 31.8 31.8 32.2 32.0 32.0 320 32.2 32.3 32.3A 1bO0 28.6 ,I.3 31.7 1]. O1 32.0 32.0 32.0 3?.0 32.0 32.1 32. 32'.3 32.3 31 . 1 2.3 3W.3( 140001 30.? 11 1 .S 331. 11.8 11 .8 13.8 33.8 33.8 34. 34.0 3. 39.0 34.0 14.0 14.0

IE 1 20001 34.. 17.1 317.5 37.5 11.8 317:. 17 . 37. 7.8 14.0. 18 .0Lo 38. 0 3 4 O 18.0 3 8.3i 1 3.0 386. i

It IO001 16.3 39.5 19.8 3.9 40.3 40.1 40.3 40.3 40.3 40.6 40.6 40.5 40. 40.5 40.5 41.5.Z 90009 36.9 40.0 40.4 41.5 40.9 40.9 40.9 40.9 40.9 41.: 41.: 41.: 41.1 41. 41.1 41.:

IA 80009 39. 41.0 93.3 43.5 43.8 43.8 43.8 41.8 43.8 44. 94.1 44.1 44.1 44.1 .1 44.|E 100O 42.9 41.1 47.3 41.5 47.8 41.8 41.8 41. 8 4 . 48.1 48.1 48.1 48.1 48.1 48.1 4.1

GE 60009 43.8 48.1 48.4 48.5 48.9 48.8 48.9 48. 9 48.9 49.1 99.1 49.1 49.1 49.1 49.1 49.1

11E 0009 4b.4 51.4 51.7 51.8 523 S2.1 52. 3 52.1 52.3 52.5 52.5 52.5 52.5 52.5 52.6 (A.5iE 4500 48.4 53.5 53.8 63. 54. '4 54.4 54.4 54.4 . 59.7 54.7 S4.7 54.7 54.1 54.7 5.1.I 4000 0.1 5.9 56.3 6b. 57.1 51.1 57.4 51. 4 5.4 67.6 5 7.6 1.6 67. 5I.. 57. 517.6I 16001 60.9 56.9 57.2 51.5 8.1 68.1 58.4 58.4 68.4 68.1 7 58.7 8.1 58.7 8.7 58.7 5b.(A 30001 54.2 60.9 61.4 61.5 b2.6 b . 6 2.9 62.9 b2.9 61.1 b3.1 63.1 b3.1 63.1 b3.1 b3.1

GE 25001 55.9 63.6 64.1 64.1 65.3 65.3 65.6 65.6 b.6 65.8 b5.9 658 65.8 658 b5.8 65.8GE 3 c0009 57.4 b6.8 66. 66.5 61.6 67.6 68.0 68.0 b.o 68.3 68.3 68. b8.3 b.1 b8.3 bb.3(A 19110 1 58.2 66.8 67.3 67.5 68.7 68.7 69.9 89.1 69.1 69.1 b9.6 69. 69.6 69.5 b9.5 64.SGE 1619 69.6 68.9 69.4 69.7 71.3 11.3 12.1 72.1 12.2 72.7 12. 12.1 12.7 72.1 72.7 71.76E 2009 60.8 71.0 71.7 72.2 73.9 13.9 14.7 74. 7 4.8 75.3 16.3 15.3 75.3 16. 3 5.1

I.E I009 62.3 73.3 74.1 74.b 76.6 76.6 77.4 77.7 77.9 78.3 78.4 78.4 78.4 78. 18.94 78.41. 900 6 2.7 73.9 15.1 15.b 71.6 77.6 78.4 78.8 79.0 79.6 79.1 79.1 19.7 79.7 19.7 19.7(11 800 6 2.9 74.8 16.3 76.9 79.2 79.1 80.1 80.6 80.8 81.5 81.6 81.6 81.8 81.6 81.6 81.6

(IE 700 63.4 76.2 78.1U 78.9 .81.3 8.4 82.2 82.8 83.2 83.S 84.0 8 4.0 84.0 84.3 84.0 84.0U( 80U1 69.0 77.6 79.6 811.8 83.6 83.7 84.6 85.4 89 S 7 86.6 6.7 86.7 86.7 86.7 86.7 8b.7

6E 6009 64.4 78.7 80.9 82.4 8S:6 86.1 86.8 87.6 88.0 89.2 89.6 89.16 89.6 89.6 b9.6 84.GE 4009 b4.4 79.5 82.1 89.7 89.0 89.3 90.5 91.5 92.0 93.5 94.1 94.1 94.1 94.1 94.1 94.1E 3009 64.9 19.5 82.1 85.0 90.1 90.5 92.0 91.3 93.8 96.1 97.6 91.8 98 98.2 V8.2 98.2

CIE 200 84.4 79.5 82.1 85.3 90.2 90.b 92.3 93.6 94.1 96.7 98.7 98.9 99.6 99.8 99.9 99.9(I I00 64.4 79.5 82.1 86.) 90.2 90.E 92.3 91. 94.1 96.7 98.7 98.9 99.b 99.9 1u1.0 113.a

(A 01 64.4 79.5 82 .1 86.a 90.2 90.6 92.3 91.6 94.1 98.7 98.7 98.9 99.b 99.9 1UO. 0 13.3

T01AL NUMBR OF OBSERVATIONS: 849

I

GLOBAL CLIMAIOLOGY BRANCH aERCENTAGE FREQUENCY OF OCCURRENLE OF CEILING VERSUS VISIBILIIYUSAF TAC FROM HOURLY ObSERVATIONSA IR IA HE I S R v I CE I M A C

STATION NUMBLR: 727855 STATION NAIE: FAIRCHILD AFA wA PERIOU UF RECORD: Tb-A5MONTH: FEB HOURSTLSI: 0900-11D0

... ... ...oo~.. ooo . . ... ... .. ... ° . ... .o .. .. ° °.. .. ... .. ... .. .°.. . .......°.°................o...............CE IL ING VI9IBILI3Y IN STATUTE MILES

I N GE GE GE GE GE GE GE GC SE GE GL GE IL GL GL SLFLEIT I 10 6 9 3 2 122 2 1 1/2 1 1/4 1 3/H 518 1/2 5/1b 1/4 1

...... ........ .. o.°o........... ° ...... .°............ °.o. .................*...... .°*..................................... . o

NO LLIL I 29.6 21 . 21.4 21.o 22.1 22.5 22.7 22.7 Z2.7 22.9 22.9 22.Y ?2.9 ?s.1 21.2 23.1

GE z0000 29.0 26.9 26.5 26.9 27 27.9 28.2 28.2 28.2 ?8.5 28.5 28.5 28.9 ?d.9 29.2 29.1GE 1800ol 25.3 26.? 26.9 27.Z 21.1 28.3 28.5 20.9 28.9 28.9 29.9 28.9 29.9 29.2 .9.6 9.?

(E 160001 2s.6 21.0 27.1 2T.9 27.9 2.S 28.1 28. 2R.7 ?9.1 29.1 29. 1 29.1 29.9 29.8 29.9GE 190001 27.7 29 29.8 0.2 30.6 1.2 31.9 11.9 11.4 31.8 31.8 1 1.8 19 .2 12.5 12.6GE 120001 30.9 13.1 13.3 13.T 19.2 19.7 35.0 19.1 15.1 35.5 35.9 39.9 15.9 35.9 36.2 36.1

GE 100001 32.2 15.0 35.3 3.9 16.4 37.0 317.2 31.9 11.9 3T.A 17.8 11.8 7T.8 59.2 18.9 IB.GE 90o0 316 3 6 . 16.1 37.5 7.9 385 38.8 39. 0 19.0 39.3 59. 39 1 .0 .2 3 2bE 80001 35 . 8.6 39 .1 19.8 90.1 90.9 91.1 41. 3 41. .1 91.7 91.7 91.1 91.7 2.2 2. 92.5(I 7000 38.2 . 1.5 . 9.9 92.b 9.2 93.8 ..1 99.3 9.3 99.b 49.6 94.. 99.6 99.0 45.1 5.5GE 6001 9.2 93.9 4.5 9.Z 95.8 49 96.6 46°9 9.. 961 2 9.. 97.2 4 1.2 1 .67b 91.9 981

GE o 5000 '42. 96.5 971 9 7.8 98.9 99.0 99.2 9 9.9 99.9 99.8 99.8 998 99.8 90.2 5.5 5.b6E 99001 91.1 91.9 .8. 99.2 99.8 471.9 50.6 53.9 90.9 51.2 51.2 51.2 51.2 91.6 51.9 S2.1

GE 90001 99.9 SO. 50.6 .5 9.2.1 92.7 93.2 5 93.29.5 53 5 .8 1.S8 51.8 59.2 59. 5.1GE SOO 99.1 91.0 91.9 92.1 51.9 53.9 59.9 99.8 98 95.1 99.1 59.1 59.1 95.9 99.8 99.9

GE 30001 96.9 4 2.2 53.1 53.8 99.9 55.1 5.7 99.9 59.9 56.1 56.3 56.3 56.1 56.7 17.0 7.1

GE 25001 97.9 99.9 59.7 96.9 97.1 97.7 98.3 98.9 98.9 98.9 58.9 58.9 58.9 99.2 59.6 59.1GE 20001 98.6 96.3 98.1 98.0 59.6 60.2 60.B 61.1 61.1 61 61.5 61.9 61.6 62.0 62.1 62.9 4

GE 18001 98.9 5.0 58.8 59.6 b60. 61.0 61.6 b0 b2.0 62.9 62.4 62.9 62.5 62.9 61.1 b.9G.E 19001 99.6 98.1 60.1 61.1 62.2 62.8 61.9 63.7 63.1 .5 6. 6.5 69.5 ,. 7 69.0 b.9 69.5GE 12001 99.8 98.8 60.8 62.3 61.1 63.7 69.3 69.7 69.7 69.5 b5 65.5 6.6 66.2 66.3 bb.

GE 10001 90.8 60.2 62.2 63.6 69.9 69.6 66.1 6b.7 66.9 67.7 67.7 61.7 67.8 68.2 b8.b 8.17GE 9001 51 . 61.0 63. 69.7 66.9 67.1 67.8 68.1 S:.6 69.9 b9.9 69.9 69.5 69.8 70.2 70.1GE 8001 1.6 61.b 69 . 66.3 67. 8 6. 69.9 0.1 10.3 11.9 11.9 71.9 1.9 11.8 I?.? 1S.16E 7u0 52.1 62.9 69.9 67.3 69.9 70.3 11.9 12.1 12.3 11.9 7.9 5 13.6 79.1 19.9 1.6

GE 6oo 52.9 69.0 67.5 69.1 72.2 73.9 75.0 19.1 76.0 77.9 17.6 77.6 77.7 78.2 18.6 78.1

GE 9001 91.7 69.8 69.6 71.6 19.1 16.17 8.9 79.9 80.1 82.1 82.7 82.7 82.8 93.3 e.6 83.1GE 401 5.7 b6.9 70.6 72.9 7.l 786 81.2 82.2 82.7 99.9 89.9 95.9 86.D 86.9 96.8 6.9GE 1001 51.8 66.9 71.3 79.3 78.8 90.1 83.3 89.9 89.9 88.7 95.1 90.2 90.9 91.b 92.1 92.GE 2001 53.8 66.9 71.3 79.3 19.3 80.9 89.1 85.9 86.5 90.6 92.1 93.1 99.2 96.7 99.9 99,1

GE 1001 53.8 66.9 71.3 79.3 79.1 80.9 89.1 859 66.9 90.7 92.8 93.2 99.1 9b.8 98.6 133.

bE O 59.9 66.9 71.3 79.. 19.3 80.9 89.1 85. 86.9 90.7 92.R 93.2 99.3 9t.n 94.6 1023.......... o... : . ..... ° o, . ... . .. . . . . . . ,. . o .. , . ° .. . . .. . . .... . .. . .. . . .... . ...... .. ., ... ...... o

IOIAL NUMBLR OF OBSERVATIONS: 899

-1

11108AL CLIMA1OLOo7 ITWANCH '[IUNTAI Fk100ENLT 0f OC C URRENCE Or (I LtI NG 818R506, 8I S1I1111IIuShE LIAr 11808 HOURLY GOSE8AAT3ONSjI Wl I A ITFEW StA8VICE /MAC

STATIION NUIIAE: 727899, STIATIION N891 I A18(H110 AF 6l WA PERIO10 61 6tL0113: 76-68,MONTH.: FtN HOu851.STI: U600-OoOO

I N I a G13 bf IE (A It LIE GE I.(E C't (,t1 6t "t Gt LE 1.t bIFELT I i S 9 1 1/I 2 112 131/4 3 1/4 5/8 1/2 9/16 1/b

NO 0 llI Id 3.1 34.. 19.1 Ill.1 19. 7 191. 7 19.8 19.9 39.9 39.9 20.0 20.31 20.1 3 211.9 20 ?. 7 20 U.8

(11 O 20003 2. 21.5?34 1.n' 1.d: 24. s 2 4.4 24. 24.9 24.9 29.1 2S.2 2. 29.?S4 2!6.7 .1b.7 26.6

13 3817 2. a 2. 21. 24.:4 24.9 2 4.76 29.0 29.0 29.2 29.1 29.4 29. 6 29.8 26.4 2b.7SCUO 36210 2.7 217 24.U142.3 24. 14.6 24. 29.3 29.3 29.1 29. 29.6 29.1 2s.9 26.9 26.4

t14001 24. ?9. 29. 29.4 29.9 26.0 21 26 .941 16.3 .9 26.9 26. 26.91 27. 0 21. 27.1 27.9 26.13ut 32600326.7 27. 28a.1 2.1 24. 7 28.9 29.31 29.1 29. 29".61 2.7 29.8 99 1. 07 1.

at 100001 29.0 10 .1 10.:6 1I. 13. 13. 13. II I'6 13. 13.8 1 12.1I : 12. : '12.7 1. 1 1. 7GE 9001 10. 1I. 11. 12. 12. 126 32.9 11. 11.1 11. 1. 1.7 11.8 14.0 74.6 19.Gt 4000 1 11. 0 14. 1 14.4 14.7 19. 2 19 .1 193.6 195.8 391.8 16 .0 16 .1 16 .4 1 6.9 1.7 17. 17I.7IGE Moo 70316.2 1 7 .6> 77.9 14b.2 18 .6 1 8.86 19.f 09. 9. 2 1 9, ,9.9 1 9 .7 1 9 .6 b 79.9 0 .2 9 ' 1 I.1IbF 60L001 11.8 19 .2 1 9.6b 19., 40.4 4.9 40.8 4.0. 4 1.. 4. 2 431.9 4 1.6b 43 .7 43.9 42.95 42 .9

911 s01ro 43.3 ' 42.6G 41.0 41. 6 4.2 44. 3 44,6 49.0 49.0 49.2 49.9 45. 49.7 49.9 46:.9 46.4UE1 490031 42. 44.3 4 4.:8 49.1 49.9 4 6.3 46.4 46.8 4 6.8 47.0 4 7.2 4.1b 47. 47. 7 48.1 46.6bf1 431001 413.9 49.0 49. 46. 47.2 47. 47.7 48. 48. 48.1 48.9 48.63 49.0 49.2 '9.8 90.3GE 19003 44.6 47. 4l 7.6 4fl11.2 48.9 49.0 49.4 49.7 49.7 49. 90. 90. 9 0.6 90. 9 1.9 92.1I.E 10003 46.2 48.9 49.6 90.2 91. 91. 91. 93. 93. 9.3 92.1 92. 52S.8 91 916 94.2

611 259201 47. 91. 93.19 92.7 91.9 91.7 94.2 94.9 94.9 94.8 9.0 99. 99.556 99. 96.4 97.3ut MOO10 48. 3.4 594:. 99.9 96.2 96.1 96.:9 9 7.2 9 7.:2 97. 977 97.8 O 98. 989 599.3 5 99.73(F lad~l 48. A 91. 9 94.4 99SS. 97.0 97 .1 57 .7 98.3 98so.3I S 9.4 98.7 988 99.2 99.9 60).3: 60.7SE 151 031 49. 99. 9 6.2 97. 2 599.4 599.9 60. 60.4 60.14 61.0 63. 63. 63 . 6,23 62.7 61.1911 12003 4 9.8 98.'2 97.2 9S.1 63. 6 1.4 62. 62.9 62.9 61 61.4 61.9 b 64.0 64.2 6 69.4

It 30001 90.6 97.6 988 99. 62.9 62.9 61.7 64.2 64.1 6. 93 6. 98 6. 66. 6.5E 900 932 9.a02 6. 64.1 64. 691 66. 66. 66. 67. 67. 17 68. 68. 64.3

IE Ul 93.9 '9. 63.31 62.1 69. 69.6 b6.9s 671 1 67.4 6 8. 1 681.4 68 .7 68.1s 69.9 170 .3 70. 7

I.E on 9.9 s 6 62.2 61.9 66.4 66.8 17.7 68.4 68. 69.95 69.8 11 70. 70. 73. 72.3I6Et O S1(1.9 62.0 b1.6 64.8 67.8 68. 69.1 700 7. 73.0 71. 73. 7 72.6 72. 7.4 7.

at 903 1. 61.9 69.7 67.:1 70.7 '131 72.4 7 1.9 71. 6 74.:9 79.7 76.3 77.0 77.1 77.9 78.:4of nq0 91.71 64.3 67.3 6. 26 1 3.4 74.7 7b0 16.1 78. 74.1 79.6 80.7 81.0 .6b 82.IE 131', 91.9" 64 .4 6 ,.? 64.. 74.3 74.4 76. 78I.7 79.0 a 8.9 81.9 8 4 .2 86.9 8. 9 a.0 89.3:(It 2(1 94.3 64.95 67. 64 .9 7.7 19 5.7 771.6 8.3 811.6 U 4. 86s.9 8 7.6b 90.8 931.8a 99.? 9

ot Too 94 -. 3 64.9 67'. 69.6 14.8 79.9 7 7. 7 80.2 80D.7 8 4.2 87.0 8 7.6b 93.9 93.9 99.6 300.0

61 9 1 S4 .1 64.9 .671. 9.6 4.8 799 17.7 80 . .7 84.T 2 ... 87:. .87.8 ... 90. 9.. 99. IO 10

TOTAL 4(18101 F O8SERVATIONt,: 8.49

GLOBAL CLIMATOLOGY BRANCH PEWCINIAGI FWEQULNCY Of OCCUkRLNCE Of CEILING WE6SUS V ISIILIIYUSAE [AC fROM HOURLY O6SkRVAIIONSA81. WEATHER ECBIC IMAC

STAY 1U, NUMBER: 12705 SIAIION NAl: f AIRCHILO Ab WA PER1O0 OF RECORD: 76-AS

MONTH: FEb HOURSILSII; lu3O-050J

.....~~~~ .. .. . .. .. . ... . .. .. .. .. .. . ... . . .. .. .. . .. . . . . . . . .. . . ... .. .. .. .. . .. . .. .. .. .. .. . .. . .CE IL ING ISIT3 IN SIgTUIE MILES

IN I GEL E GL I CE L G GE GI GE GE GE GL 1 6L L EFE E I 10 b 5 3 2112 2 1 112 1 1/4 1 3/4 5/ 1/2 5/Ib 3/4 1

.,.... ... ...... °°°. ......... °.. o°........o........ ....... °.......° ..... ..°.°,°*o°..............................*......... . ,°.

NO CEIL I x5.2 25.1 25.1 2S.1 25.9 26.3 26.3 26.1 26.9 21.2 21.3 27.4 21.4 21.4 21.6 27b

GE 2000f) 28.1 28.7 28.7 28. .2929.3 29.8 29.9 30o. 30.5 00.6 31.6 32.6 00.7 35.1GE 160001 28.6 29.1 29.1 29.1 29.3 29.1 29.? 30.2 10.3 30.1 30.9 31.0 11.0 31.2 01.1 11.1GE 160001 /8,6 29.1 29.1 29.1 29.1 29.7 29.7 0.2 0.1 10.1 30.9 11. . 1 0 1. 1.1 31IGE 140001 28.9 29.3 2 9.3 29 .3 2. 29. 29.9 30 j.4 30$. 0 U 3.1 1.2 1.2 31.2 1 1.3 3.,1GE 12000 312.6 33.1 33.1 33 .1 73. 33.7 3.1 34.2 34.3 34.! 34.9 15.0 35.0 I6.j 35.1 3.3

GE 100001 36.4 16.9 36. 36.9 37. 31. 31. 34.0 38.2 3R~ 38. 38. 39. 3v. IA .26E 9000 37.0 31.5 3.6 37.9 1.8 38.3 38.3 38.8 38.9 39.5 39.5 39.6 39.O 39.1 3.9 $ .4GE 8O0 490 0. 40. 9 40 43.2 43.2 41. 4.1 42.2 4 2.3 428 92.9 43.0 93.1 45.1 19.9 4.1GE 10100 43.7 44. 5 44.b 44. 44.9 46.6 45.6 46.3 46.2 46., 46.8 46.9 41.0 91.0 4?.. 1.IGE 6000 A 5.2 46.1 46.2 4..2 46.4 41. 1 4.1 41. 4 4.. 7 48.2 43.3 48.4 48.5 48.5 .8 ..

GE 9000 41 4.2 4 4gz 8 8.44 48.86 49.4 49 49.8 49.9 50.4 53.1 50. 51.6 D.d 51.0 517.UE 4003 49.0 50.2 59.4 60.05 606 .9 S .l 2S5 52.? 52.8 52.29 2. 9 53.1 C 1.GE 40001 49.9 51.4 SI.6 SI= 63.9 52.7 62.7 51.3 532 IT1 53.1 S5 S3. 5.S. .1 54.1 54.3GE Ibuol 510 52.7 5 2.9 63.0 5.4 54.19 . 54. 0.7 1.1 52 55 S5. 55.6 5.7 s.

GE 30001 02.2 54.5 64.8 6.8 59.2 96.9 56.9 6.4 b5. 7 51. b0 5 °1.2 .4 51.6 63.6

E 25001 503.4 56 .8 S7.1 S.l 61.8 58.6 85 5 845 69.1 59.69.1 6b 9.8 60.0 60.0 6o 62GE 20001 55.8 59.6 597 60.1 60.8 63.6 617.5 62.0 62.1 625 62.8 62.9 b 1 63.0 3.3 61.3GE 0 56.4 60. 604 60.8 63.6 62.2 62.2 62.1 2.8 63.0 63.6 7.? 631.8 63. 64. 4.17GE ,sOl 8.0 61.8 62.3 62.4 6 3.1 63.8 63.8 64.3 64.14 689 61 60.4 60 65.5 65.7 S S.GE 12OI 8.? 7 62.9 63.3 b4.2 64.9 650 66.5 60.6 66.1 66.. 66.5 86.? 66.1 6.9 66.4

GE 10O 59.0 63 1 63. 7 64. 65.0 6.8 660 66.8 66.9 61.4 61.1 87 . 68.0 68.0 8.2 68.2GE 1t101 60. 65 1 666 6. 3 .9 67.7 67. 8 I1 6 69.1 6 69.8 6.

GE AUD 612 6.7 61 .3 61.6 68 .7 69. 69 .7 10. 6 1 0.1 73. 36 7. 13. 713. 21 1GE 1130 61. 67. 68. 66. 69.7 106 1. 138 20 7.4 29 71 11.3 7.1 ; 1.4 1.4

GIE 6G03 631 61.8 68.8 6 9. 70.6 71. 13. 72. 72.8 13.4 14.0 14 .1 74.2 4. 74 .4 14.4

LI 5u0 h 6 2.8 6 9.3 10.6 711. 72.? 73. 74.,,6 16. 5.59 768 7.6 7 7.9 78. 80 784 1.GEf 403 62. 69.6 71. 13. 6 11. 5 7 4.4 16.1 16.9 7 7.4 74. 80.4 80.7 81. 81. 439 1.

GE 300 1 63.1 13.1 72.9 1 76.4 78. 1 9.7 8l3 81. 865 818 68. 89. V.. 90.6 90.9I(,E 2U031 613.8 73.3 71 .1 74.2 76.8 18. 8 0. 8 a2.1 82 . 571.b 90.7B 90.9 93.2 9 4 .3 96,.4 I 9. V

GE 1003 b3.4 73.1 13.1 74.2 76.8 78.4 80.2 82.3 82.7 87.8 90.8 91.0 91.4 9S.2 98.0 302.3

GE 01 61.4 73.3 13.1 7 4. 726.8 78.4 80.2 82.3 8l2.17 87.8 91. 8 91.0 943.4 96 .2 94.0 1021.2.. .. . ....o..... ~.o° .o. . o °.. o . .... ... ...° o. .. .. . °° . o°............ ......oo .° ... .. o.......o.°.... ..

301L NUMBER OF OBSERVATIONS: 849

S

it

6LOSAL CLIHAIOLOUY bANCH It W (IN I A t F RE UL NCI Of OLCURR88N! O1 Cf IL N, V1US V ISLBILITY

0SAt LTAC R70F ON 3L, .oRV AI IONSIAIR 'tATHtR ' WVICL/MAC

SI1ATION NUMB[R 72780S SIAIION NA FAIRCHILO AF8 WA Ppl01 OF ELCORD: 16-6

MONIH : Ft1 H 0Ou R SLSI: 03)0-13

.... .... ... ..,. ,.,. .... . .. .... .... .... .... .... ,..o ,... .o . .... • .. ... . . .. .. .. ... . . . ... . . ... .•. . . .0,173.181 V101811IIy 174 038Ti77 71|171

, I G I G L u17 1 (17 1 6 C7I G7 G C,7 GE G I 01| GI 1 IEFL I I U b t 3 2 112 2 1 1 l l. 1 3/9 S/6 12 5/lb 1/8 7o

N C[|t I 11.1 32.0 32.4 12.0 32.5 S2.0 32.6 32.6 32.7 33.2 33.2 33.2 33.0 33.5 33.6 33.1

11 E 200001 3.2 36.3 36.6 36.7 6.1 36.1 b.9 36.3 311.01 11. : 1.I 11 3 7.7 31.3 37.8 31.9ut 1800o00 37. 37.1 31. 37.2 17.2 31.3 31.8 37.8 37.8 38. 38.3 18.2 3.36E, 160001 SS.1 36.7 37.1 37.2 31.2 37.2 1.3 31. 37.0 '17. 37.9 37.9 18.2 38.2 38.1 19.4(E 1.0001 30.8 1b.9 317.2 31.3 3. 37.3 31.5 17.s 37.6 38.0 33.3 38. J8.9 18.51.7 120001 J8.8 39.8 40.2 4U.3 0. 3 40.3 90.8 80.9 40 .1 4.0 91.0 81.0 81.2 41.2 .1.1 41.S

(E 1300 q2.: 43.4 4 1.8 43.9 83.9 43.9 44.1 4.41 8.2 4. 6 4. 6 4.6 98.9 89.9 4.0 . 111 9000 41.0 89.0 88.9 45.3 80.0 45.0 90.1 45.1 45.2 457 45.7 4.1 90.9 40.9 96.1 90.2

11 8000 4.2 48.9 88.8 9 8.9 .8.9 9.. 4o9. 0 99.1 89.6 99. 19.6 499. .8 9.9 00.|7,17 0 70S 1.2 02.0 02.9 0.3 03.1 01.1 03.2 03.2 03.1 1.8 03.8 03.8 98.1 0,1 04.2 '.3

1 6000 1 52.9 09. 1 54.7 0.8 54.9 54.9 00.0 55.0 00.3 00.6 55. 0.6 0.8 o0.8 00.9 5b.1

.101 0o 8 . 8 069, 56.8 56.9 57.0 57.8 07.5 07.0 07.6 08.1 08.1 08.1 08.1 08.1 . 0.07 9001 S6.1 03.7 08.2 08.9 08.0 08.9 09.0 09.0 09.1 59.6 09.6 09.6 09.8 9.8 b 1.1

uF 40001 07.1 08.8 09.2 09.0 09.6 60.1 60.1 60.1 60.2 60.7 60.1 60.7 60.9 60.9 61.U 61.1

(. $l'uOl 08.7 60.7 63.1 61.0 61.6 62.0 62.1 62.1 62.2 62.7 62.7 62.7 62.9 6'.9 b.0 63.1,7 10CI 09.6 6 . 62.5 63.0 61.6 64.0 64.1 64.I b.2 64.7 b4.7 641.7 6.9 64.4 69.0 bS.1

G1 25001 60.4 61.5 b.O 689 65.0 65.8 60 .5 60. 66 :66. 6 6.1 6. b 66.3 66.1 66.9 bb.LE 20001 62.9 66.2 66.7 6.1 67.7 68 .2 68.2 68.3 68.8 6 68.8 69.3 69.3 69.1 69.317 1800 93.1 66.5 b7.0 670 . 68.1 68.8 68.7 68. 68.8 69.3 69.3 69.3 69.5 69.0 69.6 b9.,

1 13001 64.8 68.1 68.6 b9.3 69.7 70.1 70.3 70.3 70. 70. 9 7. 70.9 71. 1 1.1 11.3 1*4GE 1207 64.7 b8.3 68.8 69.4 70.1 70.8 70.8 70.9 71.0 71.0 73.6 71.6 71.8 71.9 72.0 72.1

f,1E 10001 64.9 69.3 69.7 70.1 71.4 71.7 72.4 12.9 13.0 73.6 713. 73.1 7.0 14..: 14.1 1 ..f 9o0 b660 70.6 71.0 71.6 72.8 73.1 13.9 74.1 79.4 15.0 ,0.1 77.1 70.8 70.4 . 70.6

1f 8(10 66.9 71.6 12.1 12.8 14.1 786 1 70.3 75.7 7.9 76.7 71 6. 16.8 77.0 11. 11.1 1.3bL uol 66.7 72.6 73.1 7.3 70.1 30.6 76.3 76.8 76.9 78.0 78.2 78.2 718 1.4 38.6 .. 1,f7 6,1 67. 7I. 13.9 74.d 7b.2 76. 7 77.,8 | 8 78.2 79.1 79.0 79.0 19.1 79.1 19. v b.3

..1 541 61.6 19.3 71.0 76.3 77.7 7b.2 78.9 79.9 80.0 81.3 81.6 81.6 82.0 82.3 l .1 92.96f JOT5 68.2 77.5 76.3 77.3 79.9 80.4 83 82.8 82.7 89.6 80.0 8.3 8.56 85. 86.1 96b.

7 3001 68.6 77.0 18.2 79.4 82.2 82.8 84.7 86.3 86.8 89.8 90.0 91.0 Y2.0 9I. 3.0 01,1 2UO1 68.6 77.1 78.1 79.0 82.3 82.9 88.8 86.0 66.9 90.3 81.8 92.0 43.0 90.1 97.2 91.9

(0 1 68.6 7.3 78.6 79.7 82.6 81.2 85.0 86.7 87.2 90.3 93.9 92.9 9. 0 9'.8 980 u03.

617 01 68.6 71.5 78.6 79.7 82.6 83. s 0.0 86.1 87.2 90.1 91.9 92.9 B. 90.8 98.0 I 3U3. .. .. . . .,... . .. .. .. . ... .. . . .. ... .. . . .. .. .. .. .. ... . .. . .. . . . .. .. o . .. . . .,o .. . .. . .. ..... 9 .... .. .. . . . . .. .

OTAL NU3 0 R Of 08ERVAT10NS: 8%9

a

GLO6AL CLIMAIOLOGY BRANCH IEHCENIAG FEUULNCV OF OCCURRLNLE OF CfILING VERSUS VISIBILIIvUSAFETAC FROM HOURLY OASE IVAIIONSAIR WEATHER SERvICE/MAC

SIAIO NUMRER: 727855 STATION NA4L: FAIRCHILD AFB WA P[RIOD OF RECO: lb-VS

MONTH: JAN HOURS(LSI): ALL... ... ... .. ... ... ... .. ... ... .. ... ... ... ; ;;; Z;; '; £; ; ; ' .. ... .........................................CE ILIlGVSIIIYINSAOI IE

IN GL GE GE GE G GE GE GE GE GE GE GE OL GL GE 1EFLEE I 30 6 S V 2 1/2 2 1 1/2 1 1/ / 1 3/4 S/b 112 /1t I/ U............................................... ,.... .. o.. ..... .*.... .. ........... .,.... o..... . ,... ..................•.....

NO CE IL 1 21.4 23.2 23.6 2.3 24.V 24.4 24.6 2%.8 24.8 25.0 2s.3 2S.3 25.8 25.9 26.4 2b.8

bE 21000 23.6 5.6 26.0 26.4 26.a 21.0 21.2 27.4 27.4 27.7 28.0 28.u 28.5 28.7 29.2 29.6GE 81OU0 2V.A 25.8 26.3 26.1 21.2 27.3 21.5 27.7 27.7 28.0 28.3 28.3 28.8 29.0 29.S 2,.YGE 16 000 13.8 25.9 26.3 2b.7 27.2 27.3 27.6 27.7 27.8 28.3 28.3 28.4 28.9 29.3 29.5 V.1bE 1 0001 24.7 26.8 2713 27.6 28.2 2b.3 28.b 28.8 28.8 29.1 29.4 29.6 30.0 30.2 10.7 31.2(A I2un1 27.3 9.5 30.3 30.6 31.1 31.2 11.6 31.7 3.7 32.0 12.4 32.4 33.0 33.1 3.7 31 4.

GE 100001 29.7 32.4 33.0 33.5 34.2 34.1 34.6 34.8 34.9 35.2 36.6 36.6 16.1 36.3 16.8 37.3GE 90001 30.8 33.6 34.1 34.7 35.3 36.4 36.7 36.9 36.0 36.36.6 36.7 1.2 37.4 34.0 38.4GE 80001 32.5 35.5 36.2 36.7 37. 3 37. 37.8 38.I 18.1 38.4 18.7 3Va8 39.4 39.6 0.3 1.GE 70UO1 34.8 38.0 38.7 39. 40.0 40.3 0. . 40.7 %40.8 41.. 41.4 43.5 2.1 4 2.3 2.b 431.4GE 60001 35.9 39.3 I9.9 40.5 41.2 41.3 43.7 41.9 42.0 42.3 42.6 42.1 43.3 43.5 44.0 44 6

GE 50001 38.4 41.9 42.6 41.3 44.0 44.1 44.S 44.7 44.8 46.1 6.5 46.6 46.3 46.3 46:9 47.GE 46001 39.1 42.8 43.6 44.2 44.9 46.1 45. 4 47 4 5 .8 6.1 5 46.6 46.1 47.3 47.3 47 9 40.4GE 40001 40.2 44.1 44.4 4.b 46.3 46.5 46.8 47.2 47.2 47.5 47.9 48.0 4a.6 48.9 44.3 4.6GE 3S01 40.9 45.0 46. .5 41.3 47.5 47.8 48.2 48.2 48.6 48.9 49.0 49.6 49.8 0.3 53.8GE 30001 41.7 46.1 47.0 47.8 48.8 49.o 49.4 49.7 49.8 60. 60.5 63.6 51.2 51.4 51.9 S2.4

GE 25001 4?.9 41.6 48.8 49.7 60o7 51.0 53. 63.8 61.8 52.2 52. 52.6 532 j.4 S4.[) 54.5GE 20001 43.9 44.2 50.3 51. 52.4 52.3 53.2 53.1 61.8 4.1 5.5 546 5.2 55.q 56.0 5b.SIA 18001 44.i 49.94 0.6 51.6 62.8 53.1 53.6 54.2 54.3 54.6 55.0 55.1 5 5 6.9 56.6 51.3GE 16001 44.8 60.8 51.9 53.3 54. 54.7 55.3 55.9 56.1 56.5 57.0 51.0 57.7 57.9 bV.4 S9.3GL 120U 45.6 62.7 54.0 56.2 56.9 57. 3 568.0 8.6 58.8 59.1 59.7 59.8 60.5 60.I b.2 63.7

GE 10001 46. 1 3. 552 56.6 68.6 68.9 69.7 60.3 60.5 61.2 61.7 63.6 62.6 62.7 aV.3 63.8GE 9UoI 46.6 54.8 564 58.3 60.3 60.5 61.4 62.3 62.3 61.3 b.7 63.8 64.5 64.7 S.3 65.8GE 8001 47.1 55.9 57.6 59.1 61.6 62.1 63.0 63.8 64.3 66.0 66.7 65.8 66.6 66.8 7. 574 .vGE 7I01 47.6 66.6 68.6 60.3 62.4 63.4 64.6 66.4 66.8 66.8 67.6 61.7 68.6 68.8 69.3 69GE 6001 47.9 67.4 59.5 61.6 64.4 64.9 66.2 67.3 67.7 69.U 70.0 70.1 1.0 71.2 71.8 72.4

6E s001 48.4 68.5 60.9 63.1 66.7 67.2 68.7 70.0 70.6 72.3 13.5 73.6 74.1 75.0 76.8 76.4GE 4UO 48.6 59.4 2.0 64.7 68.9 69.6 7E.3 73.1 73.8 76.0 77.7 77.9 79.2 74.8 60.8 83.6GE 3001 4 8.7 59.9 62.6 65.4 0.2 70.8 73.1 75.6 76.6 80.2 82.7 83.0 852 86.3 88.7 40.3uE 2001 48.7 b.1 62.8 66.7 70.7 71.4 73.9 36.7 17.7 8 S. 86.4 85.8 88.9 90.7 94.6 97.0GE u0 4 8.7 60.1: 62.8 65.7 70.7 73.4 73.9 76.1 77.8 82.2 86.6 86.0 89.3 9 46.6 94.9

GE nI 48.7 60.1 62.8 66.1 10.7 73.4 73.9 76.7 77.8 82.2 85.5 86.0 89. 0 S 6.6 3O.0. ............ oo........ ...... .. o.......... . o,............., ...... .. o o.. . .. . ~ ~. .. .... .. 9 ...... .. .. .. o......

OIAL NUMBER Of OBSERVATIONS: 7440

S

GLObAL CLIMATOLOGY BRANCH 0ERCENTAGI FkEULNY OF -,CURRENCI Of LfILING V1k60jS VI0H311I

USAFEIAC FROM HOURLY OoSIRVATIUNSAIR .AaTHER SERVICE/MAC

STATION NUMBER: 7127855 STAION NAME: FAIRCHILD I 8 W1A PtOb UF PtIORf: 16 bMONTH: JA B 200-2300

IN GE G GE GE t G GE OF GE C 1 t ,f I 1 6f 1 EFEETI I 3 6 5 4 1 21/2 2 112 /1 1/4 1/4 S0 1/2 I /1 1/4

NO CEI L 21.0 25.1 2S.I .w 26.3 b b 1.0 2I.I el. 27.1 2ff. 1 28.0 28.8 ?b.b 10.0 Tu.9

6L 200001 24.0 261 2b.8 2b.9 27.4 21.6 28.2 28.3 .4.1 28.5 29.3 24.10.0 10.U 33.2 1,o.GE 16000 24.2 26.3 21 2 6 21. 4 28.% 2B.4 2.f 249 29. 1.2 TJ.2 3I,4 .4.1GE 60001 24.? 26.3 21.0 21.7 ?.6 21.8 2B. d 28.5 t8. 28.1 2.1 ?4.4 10.2 30.2 1,4 32.3GE 14000 2.. 21. 2 8.3 28.4 28.9 24.1 29.B 29 2 9 YO.3 311. a. .8 TI.B 3T1 I 331 4GE 120001 27. 29.4 30. 30.0 33. .. .0 32.2 12.2 3/.. IT.I TY.I 34.2 19. .5.4 T40b

G E 1031001 219.2 12.? 13 13.7 143Y 34.5 34.2 15.3 3S.1 S.0 16.? 36.2 1.1 T1.3 I.6 34.4GE 9000 3 0. 14.0 34.6 14.9 14.b 5. 16. 16.1 3b.6 36.8 31.6 11.6 18.1 18.7 43.0 40.9GE 80001 32.3 35.4 36.6 36.3 31.4 b1.1 8.9 31.4 38.4 I8.1 19.6 19.6 43.6 43.6 43.9 42.4bE 1000 34 4 38.9 39.0 34.0 90.3 1 0.3 4.0 43 .3 433 4. .2 42.2 43.2 43.2 . 94. 44.9uE 6(001 35.2 39.2 39.9 4..3 43.0 1.2 43.8 41.v 43.9 4,1..T. 43 '.0 44.1 94.1 45.4 46.2

E 40001 31.31 43.6:1 4 2.1 42. :1 41 l.1 41.:5 :44.2 49. 44. 40, 44.4 85.9 4:. 46.:5 .7 48.6GE 45001 38. 43. 41.8 44.2 4.1 4. 94. 46 96.1 46. 4 1. 1. 48.31 48.1 49.6 43.4GL 9000 3.6 4.4 45.I 44. 46.3 4.5 4.3 4 , 41.6 41.4 48.5 49.6 9.6 50.9 51.7

GE 3400 1 90. 954. 2 44S.8B 46.2 4 6.4 4 1.2 4 f.8 98 .2 48.2 48.:4 9. 49..? 2 40 .3 4. 3 01I.6 4 2.GE 30001 41.6 4b.6 47.2 47.8 48.6 46.9 49.b 49.4 9.9 0.3 41.0 1.0 42.0 42.0 53.3 549.

uE 24001 40.3 48.3 48.9 49. 50.9 50.8 1L.4 : I437 1 ' 8 42.8 53.9 I1.9 4.2 56.0GE 2001 43.9 49.2 49.9 40.6 43.6 43.4 42.6 42.. 42.9 41.3 59.0 44 4 54.3 56.1 57.2

GE D40 90 44 5.1 40.91 5.9 S2. 429 4. 3.2 S 4 S49.1 54.1 5 4.4 4.9 061 4.S1 4001 44.1 43.0 53.6 42. 4 .5 S3.9 49.7 50.1 54.3 4. 56.2 56. 2 1. 51.3 08.6 44.0

bE 12001 5.S4 W 52. 51.1 54.0 44.6 44.9 56.8 57.1 57.3 1.4 58.3 48.3 59.4 9.4 0.b 61.5

GE D0001 45.6 5.5 54.5 44.1 46.8 51.3 48.0 58.3 48.3 48.b 59.5 54.4 60 . 60.4 61.8 b.1GE 90OI4 96.0 54.5 54.6 j1.j 54.2 48.6 54.6 6U.0 60.0 60.4 b1.4 63.9 62.5 62.4 63.8 b.6GE BUD1 46.6 56.1 57.6 5.89 bo. 60.5 63.b 62.0 62.0 62.b 61.5 63.5 64.6 64.6 64.9 bb.6

6c 1o0 47.1 51.2 58.7 60.3 6.6 62.0 63.4 64.0 64.2 64.1 64S.9 6.9 61.3 61.0 68.3 b9.GE 6001 47.8 o.2 60.0 61.5 63.2 63.1 64.2 65.9 66.3 61.1 b.3 .9.5 69.0 10.8 33.b

GE I U1 44.8 59.6 61.5 6 1.9 65.1 66.2 68.1 64.1 64.4 73.0 72.6 72.6 13.9 13.9 75.2 16.I1. 4001 49.4 60.4 62.4 64.7 67. 68.0 69.9 13.3 11.9 11.9 76.3 16.3 11.6 7.6 19.2 80.2

GL 3o1 9.4 60.9 62.9 65.6 68.8 69.4 13.1 11.8 194 11.3 87.3 80.4 82.8 81.4 87.0 88.3GE 2001 49.5 63.0 61.2 bb.3 64.5 70.1 12.8 14.4 16.0 19.6 84.1 .? 88.2 89.6 4.1 96.9GE ,aO

1 49. s 63. 61.2 6b.3 69., 10.3 12.8 14.4 16.0 79.b 84. 84.1 88.9 89.8 96.6 130.U

CE 01 49.9 61.0 63.2 bb.3 69.5 70.3 72.8 15.4 76.0 19.6 84.1 84.1 88.9 4 9.A 96.6 330.3....... •.... ......... o..... ..... ...........oo..... .. ........ .......... °.... .. ....... . ...... • ...... . ....... 9 . . . . ......

TOTAL NUMILY OF OBSERVAIONS: 930

-- lS - l mlh ~ l l l l l l lIIII I

7LUBAi CLIMAIOLOSY BRANCH PEWCLNIA 1 fREwULNLY Of OCCURRLNLE OF CEILING VERSUS VISIBILITYUSAFITC FROM HOURLY OBSERVAIIONS

AIR 'EATHER SERAICE/MAC

S|AIION NUMBLR: 721855 STAION NA4E: FAIRCHILD AFB WA PERIOU Of RECORD: 76-65

MONTH: MAR HOURS(LSII: 0900-1OO

CEIL NG VISIBILITY IN STATUTE MILESIN I SE IA GE GE GE GE GE GE GE GE GE GE GE ,E GE .E

FEEl I 10 6 5 4 3 2 112 2 1 112 I 1/ 1 3/4 5,8 112 5/16 1/4 0............. •......... ..................................... .. 0 ..............................................................

NO CEIL 1 40.0 41.5 42.2 92.3 42.5 42.6 42.6 42.7 42.7 42.7 42.7 4.7 42.7 41 . 2.1 42.1

8 200001 48.0 44.8 50.4 50.5 50.a 50.9 50.9 51.0 50 1.0 51.0 51. .1-0 51.0 51.0 51.0 51.0GE 180001 48.6 50.4 51.1 51.2 5.4 51.5 51.5 51.6 51.6 51.6 51.6 51.6 51.6 51.6 51.6 51.6GE on 1 48.? 5.5 51.2 51.3 51.5 51.6 51.6 51.7 7. .7 51.7 51.7 51.7 51.7 51.7 51.7GE 140001 50.0 51.A 52.5 52.b 52.8 52.9 52.9 5a.0 53.0 50.0 53.0 53. 0 53 . 53 53.0 53.0GE 120001 54. 57.0 57.1 57.d 58.1 58.2 58.2 58.3 58.1 so.1 58.3 58.3 58.3 58.3 !.3 5.

GE 100001 59.1 61.5 62.3 62.4 62.6 62.7 62.7 62.8 62.8 62A8 b2.8 62.8 62.8 62.8 62.8 62:aGE 9030 a0.4 62.8 63.5 63.? 64.0 64.1 64.1 64.2 4. 2 64 4 6.2 64.2 64.2 b4.2 64.2GE 80001 62.5 65.. 65.8 65.9 66.3 66.5 66.5 66.6 66.6 66.6 66.6 66.6 66.6 66.b b6.6 66.6GE 10001 64.6 67.6 68.4 68.5 68.9 69.0 69.0 69.1 69.1 69.1 69.1 69.1 69.1 69.1 69.I 69.1GE b001 65.7 68.8 69.6 64.1 70.1 70.2 70.2 70.3 70. 70.3 70.3 70.3 70.3 70.3 70.3 70.3

t. 50001 67.5 rl. 71.7 7.8 72 72.4 7 24 72 .5 72.5 72.5 72.5 72.5 72.5 72.5 12.5 12.5GE 45G01 68.2 71.7 72.5 72.5 73.0 73.1 73.1 73.2 71.2 73.2 73.2 73.2 73.2 73.2 13.2 73.2

GE 40001 69.1 73.3 74.1 74.2 74.6 74.7 74.7 74. 8 74 .8 78.8 78.8 74.8 74.8 74.8 74.8 74.8GE 35001 69.9 74.2 74.9 75.1 75. 5 75 75.6 75.7 75 75 75.7 75.7 75.7 75.7 75.7 75.76E 30001 71,6 76.1 77.4 77.6 78.1 78.2 78.2 78.3 78.3 78.1 78.3 78.3 78.3 78.3 78.3 76.3

(A 25001 72.9 78.1 79.4 79. 80.2 80.3 80.8 80.5 80.5 80.5 80.5 80.5 80.5 8U.5 80.5 80.5GE 20U0 78.7 80.5 82.2 82.4 83.1 83.3 83.5 83.7 83.7 83.7 83.7 83.7 R3.? 83.7 83.7 83.1GE 18001 75.1 81.U 82.6 82.8 83.5 83.8 84.0 84.1 84.1 84.1 84.1 84.1 84.1 84.1 84.1 84.1GE 15001 75.8 81.9 83.5 83.8 84.5 84.1 84.9 85.1 85.1 85.2 85.? 85.2 85.2 85.2 85.2 85.2GE 12001 77.3 83.5 85.2 85.4 86.1 86.3 86.7 88.8 86.8 87.0 87.0 87.0 87.0 81.0 87.0 87.0

GE 10001 77.8 85.1 86.7 87.3 87.7 88.0 88.3 88. 88 8888.7 88.7 88.8 88. 8.8 8 8.8 88.8GE 9001 78.1 86.0 87.7 88.2 89.1 89.4 89.8 90.0 90.0 90.2 90.2 90.3 90.3 90.3 0.3 93.3GE 8001 14.3 86.9 88.7 89.2 40.2 90.4 90.9 91.1 91.2 91.4 91.41.5 91.5 91.5 91.5GE 7001 78.3 87.4 89.2 89.9 91.1 91.3 91.7 91.9 92.0 92.3 92.3 92.8 92 4 92.4 92.4 92.4GE 6001 78.5 88.4 90.3 91.0 92.3 92.5 93.0 93.4 93.5 93.9 93.9 94.0 94.0 94.0 94.0 94.0

GE sUOl 78.5 88.7 90.6 91.4 92.8 93.1 93.7 94.2 94.3 94.6 94.6 94.7 94.8 99.8 94.8 94.8GE 4u0O 74.6 88.8 91.0 92.2 94.1 94.5 95.3 95.7 95.8 96.6 96.6 96.7 96.9 96.9 46.9 46.9GE 3001 78.6 89.2 91.6 92.9 95.1 95.5 96.0 96.9 97.0 97.7 98.0 98.? 98.5 98.5 48.6 98.6GE 200l 78.6 89.2 91.6 92.9 95.1 95.6 96.2 97.2 97.3 98.4 98.? 99.0 99.6 99.1 100.0 100.3GE 1001 78.6 89.2 91.6 92.9 95.1 95.6 96.2 97.2 97.3 98.4 98.7 99.0 99.6 99.7 IO0.0 100.0

GE 01 7q.6 89.2 91.6 92.9 95.1 95.6 96.2 97.2 97.3 98.4 98.7 99.0 99.6 99.7 130.0 100.0... 0................. oo0 ..... ......... o................ .. .... o..............°... ............. ......... .. .... .. oooo........

TOTAL NUMB R OF O8SERVATIONS: 930

-

GLOBAL CLIMATOLOGY BRANCH PERCLNIAGE FRE QUENCY OF OCCURRENCE OF CEILING WERSUS vISIBiLIIYUSAFETAC FROM HOURLY OBSERAATIONSAIR wEA[HEk GARICE/MAC

STATION NUMBER; ,27855 5IA11 NA1f: FAIRCHILD AFB WA PERIOD OF RECORD: I6-65

MONTH: MAR HOURSILSII: 1200-1%U0

CEIL INS BISIBILITT IN SIATUTE MILESIN I GL GE GE GE GE GE GL GC GE GE GE GE GEL G L GE A

FEET I a0 6 S 4 3 1/2 2 112 11 1 3/4 5/8 1/2 5/1b 1/4 0..... ... o .... ,. ,,....... ...............•....... ............ . *........... .. ..... •............. ,..,* °.. .................. .

NO CEtL I 37.1 37.5 37.5 37.5 37.5 37.5 37.5 37.5 37.5 3. .5 37.5 37. 3 3. 31.5 1.5 1.6

GE 200001 N6.7 40.1 47.1 N7.1 N7.1 N1 47.1 7.1 7.1 491 N7.1 91.1 41.1 40.1 7 .1 N.GE 18UODO 40.2 47.6 41.6 97.G N7.6 NO6 7.6 41.6 47. .647 47.6 N 0.6 47.6 N.6 0.6 0.

GE 1b000 47.2 N7.6 .7.6 40.b N7.6 47.6 47.6 47.6 47.6 47.6 47.6 47.6 47.b NO.6 47.6 4.b6E 1 4000 1 8. 9 49. 9.5 49.5 49.6 4.5 49.6 49.6 49.6 49.6 949 .6 N96 49.6 49.b 49.6 49.6bE 100111 61.1 1.7 1 .51.0 17 51.7 51.a 51.8 51.8 51.8 51 .8 I.A 1.a 51.8 51.8 5.8

GE 100001 66.3 55.9 55.9 55.9 65.9 5s.9 560 56.0 56.0 560 56.0 56.0 6.0 56.0 sb.0 56.]GE 9700 57.3 55 .1 5.1 58.3 6A.1 58.2 S.2 58.2 58. 58.2 SB.? 5B.2 58.2 58.2 5b.2GE 80001 60.3 61.: 61.1 61.1 6.. 6 1.1 b1.2 61.2 61.2 61.2 61.2 61.2 61. 2 61.2 61.2 61.2GE 10001 62.2 62.9 62.9 62.9 62.9 62.9 63.0 63.0 63.0 63.0 63.0 60.0 63.0 63.0 63.0 63.0GE 60001 63.1 63.9 63.9 63.9 63.9 63.9 64.0 64.0 64.0 64.0 69.0 64.0 64.0 64.0 64.0 b4 4.0a

GE 50001 66. 86.1 66.1 66.1 66.1 6 I6. : 663 66.3 6. 66 6S 66.5 66.5 66.5 66.5 66.6 66.5GE 46001 65.7 66.8 66 66 66 66. 67.0 67.0 67.0 67.1 67.1 60.1 61.1 60.1 67.1 60.1GE 40001 69.7 70.A 71 71.3 71.0 71.0 71.2 71.2 13.2 71.3 71.3 71.3 7;.3 71.1 31.3 711GE 35001 7s 06.0 06.4 76.9 76 6.9 1 7. 17.3 7.1 172 77.2 77.2 7 70.2 00.2 1.2GE 10001 80.6 82.4 82.6 82.6 A2. 82.7 82.9 82.9 82.9 83.0 93.0 80.0 93.0 80.0 83.0 83.0

GE 25001 93.0 86.1 AS.0 86.3 96.6 A5.5 86.7 86.0 86.7 86.9 85.A 85.A 86.8 96.9 66.8 96.9GE 20001 90.9 86.6 86.9 6.. 97.0 A7.0 A7.3 87.3 87.3 87.4 87.9 87.4 80.4 87.4 90.4 87.4

18001 AN.? 86.9 87.? 90.2 90.4 90.4 Al.? 87.7 87.7 8.9 97.8 7.9 87.9 87.8 97.8 80.9

E 16001 96.8 88.9 89.E 84.0 89.9 89.9 90.? 90.3 90.3 90.5 90.6 90.5 90.5 90.5 90.5 90.GE 12001 86.8 90.6 91.4 91.5 91.9 91.9 92.3 92.4 92.9 492.6 92.6 92.6 92.6 92.6 92.6 92.6

GE OO 87. 4 4.9 92.9 93.1 93.0 93.0 99.0 94:.2 94.2 94.4 99.4 94.4 94.4 94.4 94.4 94.4

GE 900 8.6 92.6 93.5 93.9 94.3 94.3 94.6 93.1 96.3 96.3 95.3 96.3 95.3 96.3 96.3 96.1

6E 800 97.6 93.1 94.2 94.N 95.2 95.2 96.6 95.9 96.9 96.1 96.1 96.1 96.1 96.1, 96.1 96.3GE 7001 68.0 93.5 94.7 95.2 96.9 95.9 96. 96.7 967 96.9 96.9 96.9 96.9 96.9 96.9 96.9

GE 6U0 8:. 99.1 96.3 958 66.0 96.0 97.1 97.6 90.6 9.89 98.0 98.0 98.0 980 9A.0 96.0

GE 6001 8.3 94.9 95.6 96.2 97.3 97.3 97.0 99. 98.3 99.6 98.8 98.8 99.8 99.8 98.9 98.9GE 5400 98.1 94.0 95.9 96.6 97.6 97.6 99.3 99.6 98.6 99.0 99.2 9 99 99. 99. 99.GE 3UO1 88.3 94.8 96.0 96.7 9;.7 97.7 99.3 98.8 98.8 99.9 99.6 99.6 99.8 99.9 99.9 99.9GE 2001 88.3 9.8 96.0 96.1 98. 97.0 99.3 98.8 98.9 99.4 99.6 99.6 99.8 99.9 99.9 99.9GI IGO 98.3 94.9 96.3 96.9 97.8 97.a 98.9 98.9 98.9 99.5 99.7 99.7 99.9 100.0 1O0.0 300.0

CIE 0 8.3 94.89 96.1 96.9 97.8 97.8 98.9 98.9 98.9 99.5 99.7 99.7 99.9 100.0 100.0 I0.0.... ,.. .. ....... .. °..., ......... ....... ............ ... o..,...o.o.. .............. ,°. ... ,. o...°.. , .............. ,,.,,.....


3

LO98L CLIMAIOLOG¥ BRANCH PERCENIAGE FREQUENCY OF OCCURRENCE OF CEILING vERSUS VISIBILITYUSAFEIAC FROM HOURLY OBSERVATIONS

16 .EAIHLR SERVICE/MAC

"IA'lON NUMBLR: 127855 STAIION NAIL; FAIRCHILD AFB WA PERIOD OF RECORD: lb-BS

MONTH: MAR HOURSILSII: 1500-1I00

CEILING VISI LETI IN SIAIAI* MIELSIN I CL GL GE GE GE GE GL GE GE GE GE GE GE GE GE GE

FEEI Ji0 G s 3 1 12 2 1 112 |1/ 1 3/1 5/8 1/2 5116 1/ 4. .......... °.. , ..... .. ° ..... ... .... ....... ..... ...... ........ ......,.... .......° .... o...°.. .. ...... ....... ,.... oo.

NO CE IL I 39.1 39.A 39.A 39.8 39.8 19.8 39.8 39.8 39.8 19.8 39.8 39.A 39.8 39.8 S9.8 39.a

bE 200001 0 .0 50.1 50.1 50.1 1 50 50.1 50.1 51 50.1 50.1 50.1 . 50.1bE 180001 50.9 50.5 50.5 5u.5 50.5 50.5 50.5 50.5 50.5 50.5 50.5 50.5 50.5 50.5 50.5 50.5

uE 160001 50.6 50.8 5O.A 30.A 50.8 50.8 50.8 50.8 50.8 50. 50.8 50.8 50.8 so.8 50.0 50.AGE 1 0001 52. 52.5 52.5 52.5 52.5 52.5 52.5 52.5 52. 5 52 5 52.5 52.5 52.5 52.5 52.5 52.5611 2ol0 55.N 55.5 55.5 55. 5 55. 55.5 55.s 55.5 55.5 55.5 55.5 55. 5 55.5 55.5 55.5 55.5

GE 100001 60.2 ho.3 80.9 .60. bO 60. 60. 60. 60. 60:4 60.9 60.N 60.9 60. 60.N 60 .4GE 90001 60.9 61.0 81.1 6.1 61.1 61.1 61.1 61.1 611. 61.1 611 61.1 61.1 6.1 11 6 .1

LIE 8000 63.7 6N.a 64.1 1 N.I 6N.l 64.1 69.1 6N.l 69.1 b.1 bN.I 69.1 69.1 64.1 b4.I 64.1GE 7000 6 27.2 61.5 61.6 67.6 67.& 61.6 61.6 61.6 67.6 61.6 67.6 61.6 67.6 67.6 67.6 61.6

E b0001 69.1 69.6 69.8 69.8a 69.8 69.8 69.8 69.8 69.8 698 69.8 69.8 69.8 69.8 69.8 69.8

G( 50001 71.6 72.3 72.5 72.5 72.5 72.5 72.5 72.5 72.5 72.5 72.5 12.5 12.5 72.5 12.5 12.5.E 95001 73.4 79.1 79.0 79.3 79.3 7 .3 79.3 34.3 79.3 7N%1 79.3 79.3 N ,3 79.1 19.3 14.3GE 90001 18.0 38.6 78.8 78.9 18.9 78.9 78.9 79.0 19.0 79.0 19.0 79.0 79.0 79.0 19.0 79.0GE 35001 82.2 83.0 83.5 83.8 8 8 3.9 89.0 89.0 89.3 89.3 89.3 89.3 89.4 89.0 85.3 89.3

E Jo001 85.9 817.3 88.0 88.2 88.2 88.8 88.5 88.8 88.8 8B8 88.8 88.8 88.8 88.8 88.8 88.8

GE 2500 6 8.6 89.1 89.9 91. 90.l 90.3 90.9 90.8 90.8 90.8 90.8 90.8 90.8 90.8 90.8 90.82OUO 87.5 90.2 91.0 91.2 90. 91.6 91.7 92. 9.0 9 92 9 2 92. 0 92.0 92.0 92.0

180E AT1118.1 90.5 91.3 91.5 91.7 91.9 922.0 92.9 92.9 92.9 92.9 92.9 92 92. 92.9 92.4

6E 15001 88.8 91.9 92.8 93.3 93.2 93.4 93.5 93.9 93.9 93.9 93.9 93.9 93.9 93.9 93.9 93.91 c 2001 89.6 91.9 99.: 94.7 94.9 95.2 95.3 95.6 95.6 9S.6 95.b 95.6 9S.6 95.6 95.6 95.6

GE 10001 89.9 99.1 95.1 95.9 95.6 95.8 95.9 96.2 96.2 96.2 96.2 96.2 96.2 96.Z 96.2 96.2GE 9009 90.1 94 . 95.4 95.7 95.9 96.1 96.2 96.8 96.8 96 96 9 96.8 96.8 96.8 96.8

G D 8O I 90.5 95.3 96.3 96.1 96.9 97.1 91.2 97.1 97.7 91.8 91.8 91.8 97.8 91.8 97.8 91.8GE 7009 90.6 96.1 97.2 91.5 97.7 98.0 98.1 98.6 98.6 98.7 98.7 98.1 98.1 98.1 98.1 96.1GE 6009 90.6 96.2 91.3 91.6 91.8 98.1 98.2 98. 98.7 99.0 99.0 99.0 99.0 99.0 99.0 99.0

GE 5009 90.6 96.3 91.5 97.1 98.1 98.3 98.9 98.9 98.9 99.2 92 9 99.0 99. 99.2 99.2 99.2GE 90o 90.6 96.5 97.6 98. 98.2 98.9 98.6 99: 99.2 99.8 99.8 99.9 99.9 99.9 99.9 99.9

UE 4009 90.6 96.5 91.6 98.3 98.2 98.9 98.6 99.1 99.2 99 99 99.9 99.9 99.9 99.9 99.9

GE 2001 90.6 96.5 97.6 98.J 98.2 98.9 98.6 99.1 99.2 99.8 99.8 99.9 99.9 100.0 100.0 1I0.3

GE IDO1 90.6 96.5 97.6 98.j 98.2 98.9 98.6 99.1 99.2 99.8 99.8 99.9 99.9 100.0 100.0 100.0

GE O 90.6 96.5 97.6 98.3 98.2 98.9 98.6 99.1 99.2 99.8 99.8 99.9 99.9 100.0 100.0 100.0...° . . . . . . . .. . . . . . . . ........... . ...... .°...=,....... ..... ......,°........ . . . . . °. .. . ... . .. ... ..

TOrAL NUMBER Of O8SERVATIONS: 930

I

GLOBAL CLIMATOLOGY BRANCH PLRCENIAGE FREUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITYUSAFLIAC FROM HOURLY OBSERVATIONSAIR W EA HYH k5SRVICE/MAC

SAIION NUMBER: 727855 SAITION NA4E: FAIRCHILD AFB WA PERIOD OF RECORD: 76-R5MONTH: MAR HOURSILST): IBRO-2a03

CE IL NG V3518111TY IN ST&TUIE MILES

IN I GE GE GE GE GE GE GE GC GE GE GE GE GE 6E GE CEFEE) I bD b 5 4 2 1/2 2 1 112 1 1/4 I 3/4 5/8 1/2 5/16 I/4 3

....... ,°,...,....,, ...... ..... ........... .. ..... ,.........o.... .. . ,.....,....,..o. .. ,......... o,°, ...... =..... .........

NO CElL 1 .3.0 53.0 53.U 53.0 53.0 53.1 53.0 54.0 53.0 53.0 53.0 53.0 53.0 53.0 53.0 53.0

bE 200| bO.6 60.6 60.6 60.6 60.6 60.6 60.6 60.6 60.6 60.6 60.6 60.6 60.6 60.6 60.6 60.6UE IRODOI 61.1 61.1 61.1 61.1 61.1 61.1 61.1 61.1 61.1 61.1 61.1 63.3 61.3 61.1 61.1 61.16E 160001 61.1 61.1 63.1 61.1 61.1 61.1 61.1 61.1 61.1 61.1 61.1 61.1 61.1 61.1 61.1 b1.1GE 14010 6Z.4 62.4 6Z.4 62.9 62.4 b2.4 62.4 62.4 62.4 62.4 62.4 62.4 62.% 62.4 62.4 62.4bE |Z0|1 65.5 65.5 65.5 65.5 65.5 65.5 65.5 65.5 bs.5 65.5 bs.5 65.5 65.5 65.5 65.5 65.5

GE lOOOO 69.8 69.8 69.6 69.8 69.8 69.8 69.8 69.8 69.8 69.8 69.R 69.8 69.R 69.8 69.8 69.8GE 90001 72.3 72.3 72.3 72.3 72.3 7Z.3 72.3 72.3 72.3 72. 3 72. 3 72 23 72.3 72.3 72.3GE 80001 75.2 75.3 75.3 75.3 75.3 75.3 75.3 75.3 75.3 75.3 75.3 75.3 75.3 75.3 75.3 75.3GE 70001 78.3 78.4 78.4 78.4 78.4 76.4 78.4 78.4 78.4 78.4 78.4 78.4 78.4 T8. 78.4 78.4LE 6OUO| 79.7 79.8 79.8 79.8 79.8 19.8 79.8 79.8 79.8 79.8 79.8 79.8 79.8 79.8 79.8 79.8

GE 50001 82.2 82.4 82.4 82.1 8z.s 82.5 82.5 6Z.5 8z.5 82.5 82.s 82.5 82.5 82.5 82.5 82.5

GE 4soo 83.7 84.0 84.0 84.3 84.1 84.1 84.1 84.1 84.1 84.1 84.1 84.3 84.1 84.1 84.3 84.lGE .0001 86.7 87.1 87.1 87.1 87.2 87.2 87.2 87.3 87.3 87.3 87.3 87.3 87.3 87.3 87.1 87.3GE 15001 88.3 88.9 88.9 88.9 89.1 89.1 89.1 89.2 89.2 89.2 89.2 69.2 89.2 89.2 89.2 89.2GE 30001 90.9 91.7 91.7 91.7 91.9 91.9 91.9 92.0 92.0 92.0 92.0 92.0 92.0 92.0 92.0 92.0

GE 25001 91.5 93.2 93.2 93.2 93.4 93.4 93.4 93.5 93.5 93.5 93.5 93.5 93.5 93.5 93.5 93.5GE z001 92.2 93.9 93.9 93.9 94.1 94.1 94.1 99.2 94.2 94.2 94.2 94.2 94.2 94.2 94.2 94.2GE 18001 92.9 94.1 94.1 94.1 94.3 94.3 94.3 94.4 94.4 94.4 914.4 94.4 94.4 94.4 94.9 94.qGE SOO1 92.5 94.5 94.5 94.5 94.7 94.7 94.7 94.8 94.8 948 94.8 94.8 94.8 94.8 94.8 94.8bE 12001 92.8 95.2 95.3 95.3 95.5 95.5 95.5 95.6 95.6 95.6 95.6 95.6 95.6 95.6 95.6 95.6

GE 10001 97.2 95.9 96.0 96.3 96.2 96.2 96.2 96.3 96.3 96.3 96.3 96.3 96.3 96.1 96.3 96.3GE 91)0 93.4 96.2 96.3 96.5 96.7 96.7 96.7 96.8 96.8 96.8 96.8 96.8 96.8 96.8 96.8 96.8GE 8001 93.5 96.6 96.7 96.8 97.0 97.0 91.0 97.1 97.1 97.1 97.1 97.1 97.1 97.1 97.3 97.1GE 7001 93.5 96.7 96.8 97.0 97.2 97.2 97.2 97.3 97.3 91.3 97.3 97.3 97.3 97.3 97.3 97.1GE 6001 93.5 96.8 97.0 97.1 97.5 97.5 97.6 97.7 97.7 97.8 97.8 97.8 97.8 97.8 97.8 91.8

GE 5u0 99.0 97.5 97.7 98.3 98.5 98.5 98.6 98.7 98.7 98.9 98.9 98.9 98.9 98.9 98.9 98.9GE 4UQ 99.2 97.8 98.1 98.6 98.8 98.8 99.0 99.1 99.1 99.6 99.6 99.7 99.7 99.1 9.9.7 99.7GE 30 1 94.2 97.8 98.1 98.7 98.9 98.9 99.1 99.Z 99.2 99.8 99.9 00.0 10o.0 100.0 100.0 100.0GE 2001 94.2 97.8 98.3 98.7 98.9 98.9 99.1 99.2 99.2 99.8 99.9 100.0 1o.0 100.0 100.0 00.1GE 3009 99.2 97.8 98.3 98.7 98.9 98.9 99.1 99.2 99.2 99.8 99.9 300.0 100.0 100.0 300.0 100.0

GE oI 94.2 97.8 98.1 98.7 98.9 98.9 99.1 99.2 99.2 99.8 99.9 100.0 100.0 1o0.0 oo.0 300.0

TOTAL NUMBER OF OBSERVAIONS: 930

°,.P-

GLOBAL CLIMATOLOGY BRANCH 'ERCENTAGE FAEQUENCY OF OCCURRLNLE OF CEILING VERSUS VISIBILITY

SF C ,A C FROM HOURLY OBSERVATIONSg AIR ,EATHEN SERVICE/MAC

STAI[ON NUMBER: 721855 STAION NAIE: FAIRCHILD AFB WA PERIOD OF RECORD: 7b-85MONTH: MAR HOURSILSII: 2100-2300

IN GE GE GE GE GE GE GS G AE G ESG G GE GE GE 6E

FEEl I 10 b 5 4 3 2 Ili 2 1 112 I 1/9 1 3/ 51R 112 5/1/b 1/ 0o..=. . . . . .. . . . ............................. .. ........=°..o.=.o....o.==.... * ° = = ° o ° , o o , o , , , , * . ...... * , ,.. , .............=o

NO CEIL I 51. 57.3 51.3 51.3 51.3 57.3 51.3 57.3 51.3 51.3 57.3 51.3 57.9 5.4 57.4 51.4

VE 200001 61.6 bI.9 61.9 81. 61.9 61.9 61.9 61.9 bI.9 61.9 61.9 61.9 62.0 62.0 62.0 b2.0GE 180001 b1.7 62.4 62.4 62.4 62.9 62.4 62.9 62.4 62.4 62. 62.9 62.9 62.5 62.5 62.5 62.SbE I60OO 6311 62.% 62.4 62.9 62.9 62.9 62.4 62.4 62.9 62.9 b2.4 62.9 b2.S 62.5 b2.S 62.5IE 1%0001 62.5 63.I b3. 1 63.1 63.1 b3.1 63.1 63.1 63.1 b3.1 63.1 63.1 63.2 63.2 b3.Z 63.2GE 120001 65.2 6S.8 65.8 65.d 6S.8 65.8 65.8 65.8 65.8 65.8 65.8 65.8 65.9 65.9 65.9 65.9

GE 100001 10.1 70.8 10.8 70.A 70. 1 70.8 70.9 1U.9 10.9 10.9 10.9 10.9 11.0 11.0 71.0 11.0GE 90001 71.6 12.3 72.3 72.0 72.3 12.3 12.9 12.9 12.9 72.9 72.9 12. 72.5 72.5 72.5 72.5bE 80001 15.8 16.5 76.5 76.5 76.5 76.5 76.6 76.6 16.6 76.6 76.6 1A 76.7 76. 167 76.7GE 10001 80.1 80.8 80.8 80.9 80.9 80.9 81.0 81.0 81.0 1.0 8.1 81.1 81.2 81.2 81.2 81.2GE 60009 81.1 81-7 81.7 81.8 81.8 81.8 81.9 81.9 81.9 81.9 82.0 82.0 82.2 82.2 82.2 82.2

GE 50001 83.3 89.1 89.1 AN.? 89.2 89.2 89.3 89.3 89.3 89.3 89.9 89.9 89.5 84.5 84.5 89.5GE 95009 89.2 89.9 89.9 85.3 85.1 85.1 85.2 85.2 85.2 85.2 85.3 85.3 85.9 AS.9 85.9 A5.4GE 900O0 86.0 81.2 81.3 81.5 87.5 87.5 87.1 81.1 87.7 81.1 81.8 81.8 88.0 88.0 A8.0 88.0GE 35009 81.9 88.8 88.9 89.1 89.1 89.1 89.9 89.9 89.9 89. 89.5 89.5 89.6 89.6 d9.6 89.6GE 30001 88.8 90.8 91.0 91.2 91.2 91.2 91.9 91.9 91.9 91.9 91.5 91.5 91.6 91.6 91.6 91.6

G[ 25009 89.2 9:.3 91.5 91.8 918 91.8 92.0 92:. 2.0 92.0 92.2 92.2 92.3 92.3 92.0 92.3GE 20001 89.6 93.1 93.9 92.3 92.3 92.3 92 5 92 92.5 92.5 92.6 92.6 92.7 92.1 92.7 92.1bE 18009 89.6 92.0 92.3 92.b 92.6 92.6 92.8 92.8 92.8 92.8 92.9 92.9 93.0 93.0 93.0 93.0GE 15001 89.1 92.9 92.6 92.9 92.9 93.0 93.2 93.2 93.2 93.2 93.3 93.3 93.9 93.9 93.9 93.9GE 12001 89.9 92.1 92.9 93.2 93.2 93.3 93.7 93.1 93.7 93.1 V3.8 93.8 93.9 93.9 93.9 93.9

GE 100l 90.0 93.1 93.3 93.8 93.8 93.9 99.3 99.3 99.3 993 94.9 99.9 94.5 99.5 99.5 99.5GE 9001 90.2 930. 93.7 99.1 99.1 99.2 99.6 99.6 99.6 99.6 99.7 99.7 99.8 99.8 99.8 99.8GE 8001 90.5 93.8 99.0 99.9 94.4 99.5 94.9 99.9 99.9 95.1 95.2 95.2 95.3 95.3 95.3 95.3GE 7oi 90.6 99.0 99.2 99.6 99.6 99.1 95.2 95.2 95.2 95.3 95.19 95.9 95.5 95.5 95.5 95.5IE 609 90.9 99.5 99.7 95.2 95-3 95.9 95.8 95.8 95.8 95.9 96.0 96.0 96.3 96.1 96.1 96.1

IE 5001 91.1 99.9 95.3 95.1 95.8 95.9 96.3 96.3 96.3 96.6 96.7 96.1 96.8 96.8 96.8 96.8GE 009 91.3 95.2 95.5 95.9 96.2 96.3 96.8 96.8 96.8 97.0 97.1 91.2 91.3 97.3 97.3 91.3

1 3009 91.1 95.2 95.7 96.2 96.6 96.1 97.9 97.9 91.9 98.0 98.2 98.3 98.5 98.5 98.5 98.561 OO 91.1 95.3 95.9 96.5 91.0 97.1 91.8 98.0 98.0 98.5 98.7 98.9 99.6 99.6 99.6 99.b

GE UOl 91. 95.3 95.9 96.5 97.2 97.3 98.1 98.2 98.2 98.7 98.9 99.1 99.8 99.8 99.9 9V.9

IE 0J 91.1 95.3 95.9 96.5 97.2 91.3 98.1 98.2 98.2 98.1 98.9 99.1 99.8 99.8 300.0 103.0• ....... o....o....... ...... .......... 0............0 .... .0.o.. .... . °,...... .... ........... ,., . .... .... °.,°,........


I

GLOBAL CLIM8IOLOGY BRANCH 'ERCLNTAGE FREQUENCY OCCURRENCE OF CEILING VERSUS VISIBILITYUSAL IAC FROM HOURLY OBSERVATIONSAlA -ATHER SERVICE/MAC

GIAIION NUMBER: 1?7155 S3AION NA4E: FAIRCHILD AFB WA PERIOD OF RECORD: 1b-BSMONIH: MAR HOURSiLSTI; ALL

CI 4, VIBL ITY IN S I'AT UTE M .ILES'"*****''IN I GE GE GE GE GE GE GE GE GE GE GE GE GE LE GE .E

FEET I 30 b 5 2 12 12 1 /4 I ]lN 5/8 11Z 5/16 1/4 0.o........ .o...,..... o..........o .... .......... *o.. . .... ...... .0..... ...... **..... ...... o.. ...... **.0... .... 0.....

NO CEIL 1 45.1 4b.5 46.6 6.? 46.9 46.9 46.9 46.9 47.0 47.0 47.0 41.0 47. 1 447.2 47.0 47.4

GE 2000o 52.1 53.5 53.7 53.8 53.9 54.0 54.0 S.00 54.0 54.1 54.1 54.1 54.2 54.2 54.3 54.4GE 8000l S302 54. 54.2 54 3 54 .5 S45. 54.5 54.6 5446 54 54 54.1 5407 597 59.8 5T4.9 55.0

GE 16001 3.3 544.1 5.3 5.44 54 .5 54 6 54.6 54.6 54.6 54.1 5447 54.1 54.8 54.9 55.0 55.0GE 140001 54. 4 55.3 55. 5S.6 55. 55.1 55.8 55.8 55.8 . 5.9 SS.9 55.9 56.0 Sb.O 56.1 56.2

GE 120001 ST.4 58.3 58.. 5A.8 b S.? 58 . 8 58.8 58.8 58.8 58.9 58.9 58.9 59.0 59.1 59.2 59.3

GE 100001 61.1 62.? 6z.9 63.1 60.2 63.3 63 l 6.3 613 634 63.5 63.5 61.6 63.6 63.T b1.aGE 9000 63.1 64.4 64:.6 6.17 64.9 64.9 65.0 65.0 b5.0 65.3 65.1 6S. 65.3 65.0 65. 65.5GE A0o 0 66.6 67.8 b.0 68.2 68.4 bA.4 68.5 68.5 68.5 68.6 68.7 68.7 68.8 6A.9 69.0 69.3GE 10001 69.8 7.2 1.4 11.5 11.7 7.? 11.9 1.9 73.9 62.0 72.0 72.0 1 ,2 12.2 1 2.3 2,4GE 60UD0 73.0 72.4 12.6 1.8 13.0 73.0 13 71.1 13 701. .3 13.3 7.3 73.4 73.5 73.6 73.7

GE 5000 71. 1 79.8 75.0 75 2 75. 4 75.?4 75 5 255 75 157 75.7 75.8 75.9 76.0 76.3GE 445uo 744.Z 5.9 76.1 76.0 16. 5 7 b 76.6 76.6 76.6 16.8 76.8 76.8 16.9 77.0 71. 77.2bE 40001 76.5 78.5 18.7 1 79 .1 19.2 79.3 794 79. 19.5 79.6 79.6 79.7 79.7 79.9 80.0GE 05303 78.8 83.0 81.1 81.5 83.7 837 83.9 82.0 82.0 82.1 82.2 82.2 82.3 82.4 82.5 82.6GE 3001 80.9 83.5 83.9 82 844.4 8445 84.7 8 1 8407 84 .9 89.9 84.9 85.3 85.1 85.1 85.4

LE 25001 82.0 85.0 85.4 85.7 86.0 86.1 81.3 86.1 6.3 86.5 86.5 86.5 86.7 86.1 86.9 87.0bE 20001 82.8 86.1 86.6 86.0 81.3 81.4 87.6 87.6 87.6 67.8 87.8 81.8 88.0 88.1 88.2 88.3G 8001 83.0 86.4 86.9 81.2 876 87.7 819 879 A709 88.1 88.3 88.3 88.3 88.1 A8,5 86.6GE 11001 83.6 81.3 87.9 88. 88.6 88.7 88.9 89.0 89.0 89.2 89.2 89.2 89.3 89.4 89.5 89.bGE 12U01 8.1 88.3 89.0 894 89.8 89.9 90.3 90.2 90.2 90.4 90.5 90.5 90.6 90.7 90.8 90.9

GE 1000 844.1 89.2 89.9 90.4 90.9 91.0 91:3 91.4 91. 93.7 94.7 91:7 9;.8 93.9 92.3 92.2GE 9001 a 0 89.8 90.5 93.0 91.5 91.6 93.9 92.1 92.3 9 . 9 92. 9.5 92.6 92.7 92.8GE 8o01 85.2 90. 93.1 93.6 92.2 92.3 92.6 92.8 82.8 91.1 93.2 91.2 93.3 93. 90.5 93.6GE 703 85. 90.8 93.5 92.3 92.8 92.8 93.1 93.3 93.8 93.7 93.7 93.1 93.8 93.9 94.1 944.

GE 6001 85.6 91.1 92.1 92.7 930.5 93.6 93.9 94.2 94.2 94.6 94. 7 94.7 94.8 94.9 95.0 95.1

GE 5001 85.7 93.8 92.7 93. 9442 9443 9447 95:1 95.3 95.5 95.6 95.6 95.8 95.8 96.0 96.3GE 4400 85.8 92.3 93.0 93.8 99.7 99 95.4 95.7 95°8 963 96.5968 91.0 97.1GY 0003 85.8 92.3 90 942 95.03 95.5 96.0 96.5 96.6 97.2 97.6 97.7 48.0 98.3 98.0 96.4GE 20 85.8 92.44 90.44 9.2~ 96.8 97.0 91.7 98.3 98.2 98.9 99.2 99.6 99.1

GE 3003 8s8 92.4 93. 944. 95.5 95.7 96.3 96.9 97.0 97.8 98.2 98.3 98.9 99.2 99.! 100.0

GE ol 85.8 92.4 93.4 94.3 95.5 95.7 96.3 96.9 97.0 97.8 98.2 98.3 98.9 99.2 99.8 30o.

TOTAL NUMBER Of OBSERVATIONS. 74440

I

GLObAL CLIMAIOLOGV BRANCH PERCENTAGE FREGUENCY OF OCCURRENCE OF CEILING VERSUS VJISIELITYUSAFEIAC FROM HOURLY OSERVATIONSAI , WEAIHER SERVICEIMAC

S A.0 NUMBE18R 727855 STATION NAiE: FAIRCHILD AFB WA PERIOD OF RECORD: 76-85

MONTH: APR HOURS(LSII: OUO-000

CEIiIN. VISIBILITO IN STAbUIE MILES

IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GEFEEl I 10 5 4 5 2 /2 2 1 112 1 1 9 1 3J4 5/8 112 5/16 1/4 0.. . . . . . . . .. . . . . . . ....... * . ° .... °......... .......... ... .......... ................. .... .. *.....

NO CEIL I b3.9 63.9 63.9 63.9 63.9 63.9 63.9 63.9 63.9 63.9 63.9 63.9 63.9 63.9 bq.O 64.0

GE 200001 69.9 69.9 69.9 69.9 69.9 69.9 69.9 69.9 69.9 69.9 b9.9 69.9 70.0 70.U 70.1 70.1AE 180001 10.3 70.3 70.3 70.3 70.3 70.3 10.3 70.1 70.3 70.3 70.3 70.3 70.4 70.4 70.6 70.bIE I6OO01 70.3 70.3 70.3 70.3 70.3 70.3 70.3 70.3 70.3 70.3 70.3 70.1 70.4 70.4 70.6 70.6GE 1MDOD 70.6 70.6 70.6 70.6 70.6 70.6 70.6 70.6 70.6 70.b 10.6 70.6 70.7 70.7 0.8 1U.A

GE 120001 72.6 72.6 72.6 72.6 72.6 72.6 72.6 72.6 72.6 72.6 72.6 72.6 72.7 72.1 12.8 72.8

GE 100001 77.4 77.4 77.6 77.7 77.7 77.7 77.7 77.7 77.7 77.7 7.7 77.7 77.8 77.8 77.9 77.9bE 90001 78.7 78.8 78.9 79.3 79.0 79.0 79.0 79.0 79.0 79.0 79.0 79.0 79.2 79.1 79.2 79.2I.E SODI 82.6 82.7 82.8 82.9 82.2.9 . 82.9 82.9 82.9 82.9 82.9 82.9 81.0 83.0 8].1 3.81GE 70001 86.2 86.3 85.4 85.6 86.6 85.6 85.8 86.6 85.6 85.6 85.6 86.6 85.7 8 a.7 86.8 85.8GE 600l 86.9 87.1 87.2 87.3 87.3 87.3 87.3 87.3 87.3 87.5 87.3 87.3 87.4 81. 67.6 87.6

IE 50001 89.8 90.0 90.1 90.0 90.3 90.3 90.3 90. 90.3 90. 3 903 90.3 90.14 90.4 90.6 9j.6I. 4001 90.1 91.0 91.t 92.1 91.3 91.3 91.3 91.3 91.3 91.3 91.3 91.3 91.4 91.9 92.6 91.6GE 40001 92.3 92.7 92.8 93.a 93.0 93.0 93. 0 93 .a 910 93 .0 9 9 91.1 93.2 91.2 93.2GE 35001 93.1 93.6 93.7 93.9 93.9 93.9 93.9 93.9 93.9 93.9 93.9 93.9 94.0 94.0 9 .1 94.1GE 30001 93.9 94.4 94.6 94.8 94.8 94.8 94.8 94.8 94.8 94.8 94.8 94.8 94.9 94.9 95.0 95,.0

GE 25001 94.3 94.9 95.0 95.2 95.2 95.2 95.2 95.2 95.2 95.2 95.2 9s.2 95.3 95.3 95.4 95.4GE 20001 94.9 95.6 95.7 95.9 95.9 96.9 95.9 95.9 95.9 95.9 9.9 96.9 96 6.0 96.1 96.

GE 18001 95.0 95.7 95.8 96.0 96.0 96.0 96.0 96.0 96.0 96.0 9.0 96.0 96.2 96.2 96.2 96.2IE 1500l 96.1 96.0 96.1 96.3 96.3 96.3 96.3 96.3 96.3 96.3 96.3 96.3 96.4 96.4 96.6 96.6GE 12001 95.2 96.2 96.3 96.6 96.6 96.6 96.6 96.6 96.6 96.6 96.6 96.6 96.7 96.1 96.8 96.8

GE O001 95.3 3 96 96.4 96.7 96.8 96.8 96.8 96.8 96.8 96.8 96.8 96.8 96.9 96.9 91.0 97.0

GE 9001 96.6 9 96.7 96.9 97.0 97.0 97 979 7 7 97.0 97.2 97.1 97.2 97.2I.E 800l 9S.7 96.7 96.8 97.3 97.1 97.1 91.2 97.1 97.1 97.2 97.2 97.3 97.2 97.2 97.3 97.3E O 71 95.8 96.8 96.9 97.1 97.2 97.2 97.2 97.2 97.2 97.2 97.2 97.2 97.3 97.3 97.4 97.4GE 6001 96.2 91.3 97.. 97.7 97.8 97.8 97.9 91.9 97.9 97.9 97.9 97.9 98.0 98.0 98.1 98.1

IE 5001 96.1 97.4 97.8 8.3 98.2 98.2 98.3 98.3 98.3 98.4 98.4 98.4 98.6 98.6 98.7 98.7E 4U0 q6.1 98.0 98.3 98.6 98.7 96.8 98.9 98.9 98.9 99.0 99.0 99.0 99.2 99.1 99.2 99.2

GE 3001 96.7 98.1 98.4 98.7 98.8 98.9 99.0 99.0 99.0 99.2 99.2 99.2 99.3 99.3 99. 99.4GE 2001 96.7 98.1 98.9 98.7 98.8 98.9 99.0 99.1 99.1 99.2 99.3 99.1 99.4 99.4 99.8 99.8GE 1001 96.1 98.1 98.9 98.7 98.8 98.9 99.0 99.1 99.1 99.2 99.3 99. 3 99.4 99.4 99.9 230.0

GE 02 96.7 98.1 98.% 98.7 98.8 98.9 99.0 99.1 99.1 99.2 99.3 99.3 99.4 99.4 99.9 100.0

lOTAL NUMBER OF OBSERVATIONS: 930

OLOBAL CLIMAIOLOGY BRANCH -ERCENTAGE FREQUENCYROF OCCURRENCE OF CEILING VERSUS VISIBILIITUSAFETAC FROM HOURLY OBSERvAT1ONS

ij AIR ATHER SERVICE/MAC

S1AI]ON NUMBELR: 27855 STATION NA9E: FAIRCHILD AF8 WA PERIOD F RECORD: 76-85MONTH: APR HOURSILSII: OO31-UOSU

... ... .. .o ... ..... .. .. .. ... . .. ,.. ... .. ... .. . . ..... ,. .. ... ...................... ..... ..°..... .......... ...

CEILING VISIBILITY IN STATUTE MILLSIN GE GE GL GE GE GE GE GI GE GI GE GE GL GE GE GE

FEEl I 0 6 5 9 3 2 1/2 2 I 112 1 1/N 1 3/4 /8 12 5/lb 1/4 U.......... ,... ..... .. ..... ,.......,................o....o... ..... .............. ,............o.....o......... .................

NO CElL 1 58.7 59.0 59.0 59.1 59.2 59.3 59.3 59.4 59.6 59.6 59.6 59.6 59.7 0.0 60.0 6U.2

GE 20000 69.3 64.A 64.8 69.9 65.0 65.1 65.1 65.2 65.3 65.3 65.3 65.3 65.4 65.a 65.8 bb.aGE 180001 64.8 65.2 65.2 65.3 65.9 65.6 65.6 65.7 65.8 65.8 65.B 65.8 65.9 6b. 66. 664UE 1bo00 65.0 65.9 65. 65.6 65.1 65.8 65.8 65.9 6b.0 66.0 66.0 66.0 66.1 66.1 66.9 66.7GE 19000 65.3 65.8 65.8 65.9 66.0 66.1 66.3 66.2 66.3 66.3 66.3 66.3 66.9 66.8 66.: 61.06E 120001 617.8 68.2 68.2 68.5 68.9 68.6 68.6 68.7 68.8 68.8 68.8 68 6868.9 69.2 69.2 69.9

GE 10000 72.3 72.9 72.9 73.a 73.3 73.2 73.2 73.3 73.9 73.9 13.9 73.9 73.6 73.9 73.9 74*lGE 90001 75.0 75.7 75.7 75.8 75.9 76.0 76.0 76.1 76.? 76.2 76.? 76.2 76.3 76.7 76.7 76.9GE 80003 78.8 79.1 79.7 79.8 79.9 80.0 80.0 80.3 80.2 80.2 80.? 80.2 83 80.3 80.7 80.9GE 70001 83.9 82.3 82.3 82.9 82.6 82.7 82.7 82.8 82.9 82.9 82.9 82.9 83.0 83.3 :33 81.6E 60001 82.. 83.3 83.3 83.9 3. 83.7 83.7 83.8 83.9 80.9 83 .9 83.9 89.0 89.3 89.3 89.6

GE 5000 85.9 87.0 81.0 8.1 87.2 87.3 81.3 87.9 87.6 87.6 87.6 87.6 87.7 88.0 88.0 88.2GE 95003 87.2 88.3 88.3 88.9 88.6 88.1 88.7 88.8 88.9 88.9 88.9 88.9 89.0 89.3 89.3 89.6GE 90003 89.0 90.I 90.I 90.2 90.3 90.9 90.9 90.6 90.7 90.7 90.7 90.7 90.8 93.1 91.1 91.3GE 3500 89.7 91.0 91.0 93.1 91.2 91.3 91.3 91.9 91.6 91.b 91.6 91.6 91.7 92.0 92.0 92.2GE 30003 90.2 91.6 91.6 91.7 91.8 91.9 91.9 92.0 92.1 92.1 92.3 92.1 92.2 92.6 92.6 92.8

GE 25003 90.9 92.2 92.2 92.3 92.N 92.6 92.6 92.7 92.8 92.8 92.8 92.8 92.9 93.2 93.2 93.9GE 2000 91.0 92.9 92.9 92.6 92.8 92.9 92.9 93.0 93.1 93.1 93.1 93. 3 93.2 93.6 93.6 93.8GE 3800 91.1 92.6 92.6 92.7 92.9 93.0 93.0 93. 93.? 93.2 93.2 93.2 93.3 93.1 93.7 93.9bE 15003 931 92.9 92.9 93.0 93.2 93.3 93.3 93.9 93.6 93.6 93.6 93.7 93.8 9.3 99.1 99.3GE 12001 91.7 93.2 93.2 93.3 93.6 93.7 93.7 93.8 93.9 93.9 93.9 99.0 99.1 99.9 99.9 99.7

GE 1000 91.9 93.9 93.9 93.6 93.8 93.9 93.9 99.0 99.1 99.1 99.3 99.9 99.6 99.9 99.9 96.1GE 9U0 92.2 9.0 99.0 99.3 99.3 99.9 99.9 99.6 99.7 99.7 99.9 95.0 95.3 95.9 95.9 95.7GE 8003 92.9 99.2 99.2 9q.3 99., 99.7 99.7 9. 9 95.0 95.0 95.2 95.3 95.9 95.8 95.8 96.GE 7001 93.0 99.8 95.0 95.3 95.4 95.6 95.6 95.8 95.9 95.9 96.1 96.2 96.9 96.8 96.8 97.0GE 6001 93.1 95.9 95.8 96.3 96.6 96.1 96.7 96.9 97.0 97.0 97.2 97.3 97.6 97.9 97.9 96.1

GE 500 91.2 95.8 96.3 96.9 97.0 97.1 97.3 97.3 97.9 97.9 97.7 97.8 98.0 98.3 98.3 98.bGE NUD| 93.9 96.0 96 96. 97.2 97. 3 97 97.6 97.7 97 9797.9 98.0 98.2 98.6 98.6 9B.AGE 3003 93.6 96.3 96.8 97.3 97.7 97.8 97.9 98.3 98.2 98.2 98.6 98.7 98.9 99.2 99.2 99.9GE 2001 93.6 96.3 96.9 97.1 97.7 97.8 97.9 98.1 98.2 98.2 98.6 98.7 99.2 99.6 99.6 100.0GE 1001 93.6 96.3 96.8 97.1 97.7 97.8 97.9 98.1 98.2 98.2 98.6 98.7 99.2 99.6 99.6 100.0

GE 03 91.6 96.3 96.8 97.1 97.7 97.8 97.9 98.1 98.2 98.2 98.6 98.7 99.2 99.6 99.6 100.0


I

GLOdAL CLIMAIOLOGY bRANCH -ERCENTAGE FRjUUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITYuSAFIAlC

f FROM HOURLY OBSERVATIONS

AIR EAIHER SERWICE/MAC

STATION NUMBER: 721855 STATION NA4E: FAIRCHILO AFB WA PERIOD OF RECORO: 76-A5MONTH: APR HOURSILSI): 0600-000

.~I....................... . . I81LIT;;IN SSATUE MILES "

IN I GE UE GE UE GE GE GE GE G GE GE GE GE GE GE GEFEE) 1 30 b 5 4 3 2 312 2 1 112 1 1/4 1 3/N 5/8 112 5/16 114 0

.o.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...... ........°.°..°.°..°.°.. ° ..... .... . ..... ........

NO CElL 1 51.0 52.0 52.1 52. 52.7 52.7 52.7 52.8 52.8 52.8 52.9 52.9 53.0 53.2 53.? 53.9

6E 2GOO0 57.N 58.4 58.6 59.3 59.2 59.2 59.2 59.3 59.3 59.9 59.6 59.6 59.8 60.0 60.N 60.7GE ISouOI 57.7 S8.7 58.8 59.2 59.N 59.9 59.4 59.6 59.6 59.7 59.8 59.8 60.0 60.2 60.7 60.9GE 160001 58.2 59.2 59.1 59.8 60.0 60.0 6O.0 60. 60.1 60.2 60.3 60.3 60.6 60.8 b1.2 61.4CE 190001 59.9 61.0 61.1 63.6 61.8 61.8 61.8 61.9 61.9 62.0 62.1 6Z.1 62.3 62.6 63.0 60.2GE 120001 62.0 63.6 61-7 64.1 69.3 69.3 69.3 64.4 69.9 64.b 69.7 69.7 69.9 6S.1 65.6 65.8

(E 30000 I 69.7 6b.9 66.7 67.2 67.6 67.6 67.6 61.7 67.7 67.8 67.9 67.9 68.1 68.3 68.8 b9.0

bE 90001 67.2 69.2 69.9 70.3 70.3 10.3 70.3 70.4 70.9 70.6 70.7 70.7 70.9 71.1 71.6 71.86E 80001 71.6 P3.7 73.9 79.6 75.0 75.0 75.0 75.1 75.1 75.2 75.3 7.3 75.6 75.8 76.2 76.9GE 70001 75.0 77.1 77.3 78.0 78.9 78.9 78.9 78.6 78.6 18.7 78.8 79.8 79.0 79.2 79.7 79.9GE 60001 76.9 78.1 78.9 79.5 80.0 80.0 80.0 80.1 80.1 80.2 80.3 80.3 80.6 80.8 A1.2 81.4

GE 5000t 78.6 80.8 81.0 81.7 82.1 82.) 82.1 8,.2 82.2 82.3 82.9 82.9 82.7 82.9 83.3 83.6GE 95001 79.9 82.3 82.6 83.2 83.7 83.7 83.7 83.8 83.8 83.9 89.0 89.0 89.2 89.4 89.9 85.16E 40001 81.9 89.7 89.9 85.b 86.0 86.0 86.0 86.1 86.1 86.2 86.3 86.3 86.6 86.6 87.2 87.9GE 35009 82.7 85.7 85.9 86.6 87.0 87.0 87.0 81.1 87.1 87.2 87.3 87.3 87.6 87.8 b8.2 86.4GE 30001 82.9 85.9 86.1 86.9 87.9 87.9 87.9 87.6 67.6 87.7 87.8 81.8 88.0 88.2 88.7 88.9

GE 25001 83.3 86.1 86.7 87.9 88.0 88.0 88.0 88.1 88.1 88.2 88.3 88.3 88.6 88.8 89.2 89.9GE ZOO 83.6 86.6 87.0 87.6 88.3 88.1 88.1 88.9 88.9 88.6 88.7 68.7 88.9 89.1 69.6 89.8GE 8001 83.8.8 88 87.2 88.3 88.6 88.6 88.6 88.7 88.7 88.8 88.9 88.9 89.1 89. 69.8 90.0GE 15001 89.0 87.9 88.0 88.9 89.9 89.9 89.9 89.6 89.6 89.7 89.8 89.8 90.0 90.2 90.7 90.9GE 12009 89.7 87.9 88.6 89.9 90.0 90.0 90.0 90.1 90.1 90.2 90.3 90.3 90.6 90.8 91.2 91.9

GE 10001 85.2 88.b 89.3 90.6 91.1 91.1 91.3 91.2 91.2 91.3 91.9 91.9 91.7 91.9 92.3 92.6GE 9009 85.8 89.1 89.9 91.1 91.7 91.7 91.7 91.8 91.8 91.9 92.0 92.0 92.2 92.9 92.9 93.3GE 8003 86.3 89.9 90.2 93.9 92.3 92.1 92.1 92.2 92.2 92.3 92.9 9z.9 92.7 92.9 93.3 93.6GE 106 86.3 89.9 90.9 91.7 92.7 92.7 92.7 92.8 92.8 92.9 93 93.2 9.6 9.0 9.2

GE 6001 '.0 90.9 92.0 93.4 99.7 94.7 99.8 99.9 99.9 95.0 95.1 95.1 95.3 95.7 96.1 96.3

GE Su0l 87.1 91.1 92.6 99.2 95.6 95.6 95.7 95.9 95.9 96.0 96.1 96.1 96.3 96.7 97.1 91.3GE 9009 87.9 91.9 93.0 99.8 96.7 96.7 96.8 97.0 97.0 97.3 97.9 97.9 97.7 98.0 98.9 98.7GE 3001 87. 91.6 93.1 94.9 97.0 97.0 97.? 97.4 97.9 97.9 98.2 98.2 98.7 99.0 99.9 99.7GE 2001 87.9 91.6 93.1 95.3 97.3 97.1 91.3 97.6 97.6 98.1 98.9 98.9 99.0 99.1 99.8 100.0GE 300l 87.9 91.6 93.1 95.3 97.1 97.3 97.5 91.6 97.6 98.1 98.9 98.9 99.0 99.3 99.8 100.0

GE 09 87.9 91.6 93.1 95.3 97.1 97.1 97.3 97.6 97.6 98.1 98.9 98.9 99.0 99.3 99.8 300.0... .. .. .. .. . . . . . . . . . . . . .. . . . . . . . ...................... . . ... . . .. ....... . ... . .

tOAL NUMBER OF OBSERVATIONS: 930

.a ..

GLOBAL CLIMATOLOGY BRANCH PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITYUSA AC FROM HOURLY OBSERVATIONSAIR 4EAIHER SERVICE/MAC

STATION NUMBER: 72785S STATION NA4E; FAIRCHILD AFB WA PERI0 OF RECORO: 7b-8SMONTH: APR HOURSILS[i; 0900-1100

CE.IL..N. .VISIBILITY IN STATUTE MILESIN I GE 6L GE GE GE G1 GE GE GE GE GE GE GE GE G I.

FEET I 10 6 4 3 2 1/2 ? 1 112 1 1/4 I 3/4 5/8 1/ I 5 1 14 0.... o....... ....... ............... ............................................. ....... .................... ............. .....

NO CEIL 1 50.2 50.9 51.0 51.3 S1.0 51.0 51.0 51.0 51.0 51.0 51.0 51.0 51.0 61.0 51.0 51.0

GE 200001 58.7 59.3 69.4 59.4 59.q 59. 59.4 59. 59. 59.4 59.4 59.4 59.4 69.4 59.4 59.46E 180001 59.2 59.9 80.0 60.3 60.0 60.0 60.0 60.0 60.0 60.0 60.0 60.0 60.0 60.0 60.0 bO.OIE 16000 59.3 60.0 bO. 0 60.1 60. 1 60 1 60.1 6. 1 001 60.1 6.1 60.1 60.1 60.1 60.1 50.1GE 110001 60.2 60.9 61.0 61. 81.0 61.0 61.0 .0 0 1.0 61.0 6..0 61.0 61.0 61.0 61.0 6.0

GE 120001 61.9 64.8 64.9 64.9 64.9 64.9 69.99 649 64.9 64.9 64.9 64.9 64.9 64 64 64.9 64.9

IE 100001 6R.7 69.7 69.9 69.9 69.9 69.9 69.9 69.9 69.9 69.9 69.9 69.9 69 69.9 69.9 69.9GE 90001 69.9 70.9 11.1 71.I 93.1 71.1 1.3 11.1 71. 171.1 7 11.1 71.1GE 80001 13.2 74.2 74.R 7.R 14.4 14.4 74.4 74.4 14.: 74. 74.4 74.4 14.4 74.4 14.4 14.4

E 70001 76.3 17.3 77.6 10.6 17.6 11.6 17.6 1.6 11.6 77.6 11.6 77.6 17.6 71.6 17.6 1 .6GE 6000 11.9 78.9 19.1 79.1 79.1 7 91 79.1 79.919.1 79 1 79. 9. 1 .1 19.1

GE 50001 a0.1 81.1 83.3 81.1 8. 81.4 83.9 81.4 81.4 81.9 83.4 81.4 81.4 81.4 83.4 83.4

GE 45001 83.1 82.1 82.3 82.1 82.4 82. 82.4 82.4 82.8 82.4 82.4 8Z.4 82.4 82.4 82.4 82.4GE 400O1 I..0 84.2 84.4 84.4 84.6 84.6 84.6 84.6 B84.6 4.6 84.6 84.6 84.6 84.6 84.6 84.6GE 3001 85.7 86.9 87.1 81.1 87.2 81.2 87.2 81.2 87.2 87.2 87.2 17.2 87.2 81.2 87.2 81.2GE 3OO0I 88.7 90.0 90.2 90. 90.4 904 9.4 90.4 90.4 90.4 90.4 90.4 90.4 90.4 90.4 93.4

(.E 2SO01 89.9 91.2 91.4 91.b 91.8 91.8 91.8 91.8 91.8 91.8 91.8 91.8 91.8 91.8 91.8 91.8GE 2OO 90.9 92.3 92.6 92.1 92.9 92.9 93.0 93.0 93.0 93.0 93.0 0 93 93.0 93.0 93.0 93.0.E 18001 92.2 92.8 93.0 93.1 .93.1 93.3 90.4 93.4 93.4 93.4 93.4 90.4 9.4 93.4 93.4 93. 4GE 15001 92.0 93.9 94.2 94.3 94.7 94.7 94.8 94.8 94.8 94.8 94.8 94.8 94.8 9.8 94.8 94.AGE 12001 92.9 94.9 95.3 95.4 95.8 95. 9 9 95.9 85.9 95.9 9 959 95.9 95.9 96.9

GE 10001 93.6 9S.9 96.3 96.b 97.0 97.0 97.3 97.1 971 97.1 97. 97.3 97.1 91.1 97.3 91.1I.E 9001 90.6 95.9 96.3 96.6 97.0 97.0 97.3 91.3 91.1 97.1 97. 91.3 97.2 91.1 97.3 91.1GE 8LI 93 .8 96.2 96.8 97.3 97.7 97.1 97.8 91.8 91.8 97.8 97.8 91.8 91.8 91.8 97.8 91,.GE uOn 93.9 96.7 97.2 97.7 98.2. 2 92 98.3 98.3 98.3 98.3 93 9 98.3 98.3 98.3 98.3 98.1GE 6001 94.0 97.0 91.6 98.3 98.1 98.7 98.8 98.8 98.8 98.8 98.8 98.8 98.8 98.6 98.8 98.8

GE 5001 94.2 97.2 97.8 98.1 99.4 99.4 99.6 99.b 99.6 99.6 99.7 99.1 99.1 99.1 99.1 99.1GE 4001 9A.3 97.6 98.1 99.3 99.8 99.8 99.9 99.9 9.9 999 .9100.0 00 0 300.0 300.0 o00.0GE 3001 94.3 91.6 98.3 99. 99.8 99.8 9 9. 99.9 99.9 100.0 300.0 300.0 100.0 300.0 300.0

GE 2001 94.1 91.6 98.3 99.3 99 99 99.8 99.9 99.9 99.9 99.9 100.0 100.0 100. 10.0 300.0 100.0bE 3001 94.3 91.6 98.1 99.3 99.8 99.8 99.9 99.9 99.9 99.9 100.0 100.0 300.0 100.0 100.0 102.0

GE 01 94.3 97.6 98.1 99.0 99.8 99.8 99.9 99.9 99.9 99.9 100.0 100.0 100.0 100.0 IUO.O IO0.0....................... *.......°.......°.................................................'.°......... ..... ...

IOAL NUMBER OF OBSERVATIONS: 90

£

GOAL CI AIOLObY BRANCH PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBIIIETF:LCLIM b FROM HOURLY OBSERVATIONS

Al. EATHEk SERVICEIMAC

STATION NURRER; 7Z185 STATION NAKE: FAIRCHILD AFB WA PERIOD OF RECORD: 16-85

ONTH: APR HOuRSILSII: 1?00-1400....... ..... .. .......,..,.. ..... .... o. ... .................. ............ ... ,,......o...... ......... , .. ......... ..

C ILIN6 VISIBILITY IN STATUTE MILE5I N GE GE GE GE GE G E G GE G E GE GE GE EL 6E GE GE

FEET I 10 b 5 9 2 1/2 2 1 1/2 1 1/4 1 3/4 5/8 1/2 S/lb 1/4 0......... .. . .. *.. ..............,..... ...........o,..... .. ** ..... .............. *.. ... *....o, ..... •......... * ...... ,..,o*.

NO CEIL 1 31.9 38.3 38.3 38.3 18.3 3A.3 38.3 38. 38.3 38.3 38.3 38.3 38.1 . 8.3 3. 3 3b.3

LE 200001 47.7 48.1 8 .1 . 48.1 ' l 48.1 4 8.1 48.1 4 A.. 98,1 4 8.1 B. 48.1 48.1 4b.1t, 1A00 48.2 48.1 48.7 48.7 48.1 48.7 4 77 4 4. 48.7 4.1 8 . 4 A.7 48.1 R.7 4BA.1GE 16000 4A.9 48.9 48.9 48.9 48.9 48.9 48.9 48.9 4A.9 46.9 48.9 48.9 4A 9 48.9 48.9 46.9GE 14OU0 49.6 50. O.0 50.3 50.0 50.0 O. 50.0 5.0 50.0 O.0 NO.0 50.0 50.0 s0.0 56.36 E 120001 51.4 51.9 58.9 51.9 51.9 51.9 51.9 51.9 51.9 51.9 51.9 51.9 51.9 51.9 51.9 51.9

bE 100001 58.3 57.2 57.2 57.2 51.2 57.2 57.2 57.2 57. 2 57.? 5.2 57.2 57.2 51.2 57. 1.2GE 90001 57.3 58.2 58.2 S8.2 58. 2 58.2 58.2 58.2 58.2 58.2 58.2 58.2 58.2 58.2 58.2 58.2GE 80O 58.4 9. 59.4 59.4 59.4 59.4 59.4 59.4 59.4 59.4 59.4 59.4 59.4 59.4 59.4 59.GE 1000 60.4 61.6 61.7 61.1 61.1 61.7 6 61 1.7 61.7 61.7 b.7 61.7 61.7 1.1 1.

GE 60001 61.3 62.4 62.7 62.7 62.7 62.8 62.8 62.8 62.8 62.8 62.8 62.8 6Z.8 62.8 62.8 62.8

GE 50001 65.8 67.0 67.2 67.2 6Y.z 67.3 67.3 67.1 67.1 6 1 67.3 67.3 67.3 67.3 '7.3 67.3I.E 4500 67.1 68.9 69.1 69.1 69.1 69.2 69.2 69.2 69.2 69.2 69.2 69.2 69.2 69.2 69.2 69.26E 4000 74.. 75. 759 5.9 75.9 76.0 6.0 6.0 16.0 1 1 16.0 76.0 16.0 16.0 76.0(,E 35001 84.4 85.9 8b. 1 86 86.2 86 86 86.0 86.0 86.3 86.3 86.3 86.3 86.0 86.3 B6.3 86.0GE 30001 90.9 92.3 92.6 92.8 92.9 93.0 93.0 93.0 90.0 93.0 93.0 93.0 90.0 93.0 80.0 93.0

bE 25U00 92.7 94.3 94.6 94.8 94.9 95.0 95.0 95.0 95.0 95.0 95.0 95.0 95.0 95.0 95.0 95.0GE 20001 93.8 95.4 95.1 95.9 96.0 96.1 96.1 96.1 86.1 96.1 96.1 96.1 96.1 9b.1 96.1 94.1GE 18001 94.0 95.7 95.9 96.1 96.2 96. 3 96. 0 96 96.3 96.3 96.1 96.3 96.3 94.0 96.0 96.3GE 15001 94.6 96.4 96.7 97.3 97.2 97.3 97.3 97.3 97.3 97.3 97.3 91.3 97.3 973 97.3 91.1GE 12001 95.0 97.2 97.4 97.8 98.0 98.1 98.1 98.1 98.1 98.1 98.1 98.1 98.1 98.1 98.1 98.1

GE 10001 95.2 97.9 98.1 98.1 98.9 99.0 99.0 99.0 99.0 99.0 99.0 99.0 99.0 99.a 99.0 99.0GE 9001 95.2 98.0 98.2 98.8 99.09 9. 91 9 99.1 99.1 99.1 99.1 99.1 99.1 99.1 99.1 99.1GE 8UDI 95.0 98.1 98.4 99.0 99.2 99.3 99.! 99.4 99.1 99.: 99.4 99.4 99.4 99.4 99.4 994G[ 1002 95.3 98.1 98.4 99.1 99.3 99.4 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.6 9.6GE 6001 95.3 98.1 98.4 99.1 99.3 99.4 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.6

GE 6001 95.0 98.1 98.4 99.1 99.3 99.4 99.6 99.6 99.6 99.6 99.8 99.8 99.8 99.8 99.8 99.8

GE 40i 95.4 98.3 99.1 99.3 99.6 99.1 99.8 99.8 99.8 99.8 100.0 100.0 100.0 100.0 100.0 100.0

I.E l0| 95.9 98.3 98.7 99.3 99.6 99.9 99. 8 99.8 99.8 100.0 100.0 000.0 100. 100 .0 100.0GE 2001 95.4 98.3 98.7 99.3 99.6 99.1 99.8 99.8 99.8 99.8 100.0 300.0 100.0 100.0 100.0 100.0

GE 1001 95.4 98.3 98.1 99.3 99.6 99.7 99.8 99.8 99.8 99.8 100.0 100.0 100.0 100.3 100.0 1030

GE 0 95.4 98.3 98.7 99.3 99.6 99.7 99.8 99.8 99.8 99.8 100.0 100.0 100.0 100.0 100.0 103.0.*.... . . . . . . .................,,. °, . , , .... oo..... ... o... o. o. . o........o......... ........ , ,.........•..... .... .......... ....


f

GLObAL CLIMAIOLOGY BRANCH PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING WES05 WIS IbILIT% rUSAFETAC F OM HOURLY OBSERVATIONS

AlA .EATHFR R R.ACE/MAC

STAIION NuMBLER: 127855 STATION NAME: FAIRCHILD AFB WA PERIOD OF RELCORD: 76-l ,

MONTH: APR HOURSILSI7: 1SG0-17d

LE ILIN 180 VISILITY IN STATUEI MILESGGE O GE 61 GE G G E GE GE GE GE GE GE L.E

FEET I 10 6 5 3 3 2 112 21 1/2 1 1/ 1 3/ 5/8 112 511b 1/4o........ 000...... 0..00.. 0 ......00 ..... ... ...... 0 ,.. 0.............00....... 0.. ,0............... . =0 ..... .............

NO CEIL I 316 37.8 37.8 37.8 37.8 37.8 37.8 37.8 37.8 37.8 37.8 37.8 37.8 37.8 37.8 31.

sE 200001 I0.1 50. 50 s. 50.6 60.6 506 s0 50 50. 6 50 50.6 50.6 50.6 50.b 50.b 50.6UE 180001 50.9 51.2 S1.2 51.2 61.3 5 1.3 51.3 51.3 51.3 51.3 51.3 51.3 51.3 51.3 SI.3 51.:3GE IbUOj 51.7 52.0 62.0 52.3 52.1 62.1 52.1 52.1 52.1 52.1 52.1 52.1 2.1 52.1 52.1 52.1

E 4 4001 52.1 53.0 53.0 50.3 53.1 53.1 53.1 53.1 63.1 53.1 53.1 53.1 53.1 53.1 ST.I 50.1SE lo001 6.1 56. 56.4 Sbt". 56.6 56.6 56.6 56.6 56.6 56.6 56 .6 56.6 56.6 5b. f 56.6 6b.6

GE 0UDD 599 60.4 b0.4 604 607 60 7 60.7 60. 6 60.8 60.8 60.8 60.8 60.8 60.8 60.8 63.4GE 9UO00 61.8 62.0 620 61 . 62.2 62.2 622 623 62. 62. 62.3 62 62. 62.3 62.3 b2.0

GE 80011 b.8 66.3 65.3 65.3 65. 6 66 6 66 65.7 65 65.7 66.7 65.7 6.7 66. 7 65. 65.7 65.1

bE 70001 67.3 67.9 67.9 619 68.1 68.1 68.1 68.2 68.2 68.2 68.2 68.2 6B8.2 6b.2 8.2 66.2GE 60001 69.3 70.0 70.0 70.2 70.2 70.2 70.2 70.3 70.3 70.3 70.3 70.3 70.0 10.3 70.3 73.3

LE 5D001 73. 744. 7.8 7.8 7.0 ' 76:1 75.1 75.2 76.2 75.2 75.2 75.2 75.2 76.5 75.2 7.2GE 85001 76.8 77.8 77.8 778 78 71 78.1 78.2 78.2 78.2 18.2 78.2 78.2 78.2 78.2 78.2GE 40001 84.3 85.0 85.3 85.3 86.7 85.7 85.8 85.8 88 5. 5. . 5.8 8.8 R.8 b5.B

6E 36001 88.1 89.2 89.6 89.6 89.9 89.9 89.9 90.0 90.0 90.0 90.0 90.0 90.0 90.0 90.0 40.0,E 30001 92.9 994.2 94.6 94.7 95.0 95.0 95.0 95.1 95.1 95.1 95.1 95.1 95.1 95. 1 5.. 95.1

GE 25001 9306 95.4 95.6 95.9 96.2 96.2 96.2 96.1 96.3 96.3 96.3 96.3 96.3 96.3 96.3 46.0GE 20001 94.1 96.4 96. 96.9 97.2 97.2 97.2 97.3 97.3 97.3 97.3 97.3 97.3 97.3 Y7.3 97.06E 1801 9 96.6 96.9 97. 97 .3 97.0 97.1 97.8 97. 97.8 97.4 97.8 47.8 97. 97.4 97.4UE 15001 98.3 96.9 97.3 97.b 97.9 97.9 97.9 98. 98. 0 9 8. 989. 9.0 98.0 98.3 98.0 96.0GE 1200I 94.. 97.1 97.6 97.8 98.1 98.1 98.1 98.2 98.2 98.2 98.2 98.2 98.2 98.2 98.2 98.2

GE 1ou01 98.6 97.7 98.1 98.: 99.1 99.1 99.1 99.2 99.2 99.2 99.2 99.2 99. 99.2 99 99.IGE 9001 98.6 97.7 98.1 98.6 99.2 99.2 99.? 99.3 99.3 99. 99. 99.3 99.3 99.3 99.3 99.1

GE :0o 98.6 97.7 98.1 98. 99.2 99.2 99.2 99.3 99.3 99.3 99. 99.01 99.3 99.3 99.1 93.1bE 7001 94.6 97.7 98.1 98.6 99.2 99.2 99.2 99.0 99.3 99.3 99.3 99.03 99.3 99.3 99.3 99.1GE 6001 98.6 97.1 98.2 98.8 99.8 99.4 99.8 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.6

GE sol 98.6 97.7 98. 98.8 99.6 99.6 99.6 99.7 99.7 99.8 99.8 .9.8 99.8 99.8 99.8 49.8GE 800 94.6 97.7 98.2 98.8 99.6 99.6 99.7 99.8 99.8 99.9 99 99 99.9 99.9 99.9 99.9

.E 3110 94.6 97.7 98.2 98.8 99. 6 99.6 99.7 99.8 99.8 100.0 100.0 1O0.0 O00.0 1OU.0 100.0 1O0.UGE 2001 98.6 97.7 98.2 98.89 996 6 997 99.8 99.8 100.0 10o0 100.0 OD.0 100.3 1 00.0 1D.0bE 1001 94.6 97.7 98.2 98.8 99.6 99.6 99.7 99.8 99.8 100.0 100.0 100.3 100.0 10.O 100.0 130.0

GE 11 94.6 97.7 98.2 98.8 99.6 99.6 99.1 99.8 99.8 100.0 100.0 100.0 100.0 100.0 100.0 100.U0 .. .................... 9.................. .............. ... ... ..... .... ............ ..... . .... . .....


ULUbAL CLIMAIGLOUY B8NCH >tikC NII ,Fo OF 0CCURI ENC OF CILING VfRSU VISIBILITYUSAFEIAC FRUM HOURLY D L R A11 N

AIR WEA THE R ERWIC[/MAC

SfAIION NUMBLQR 127855 ST3ATION N F 4 H: L AF8 A PERIOD UF RECORD: 76-65MONTH: APR HO]PoILS1I2 18UD-2jU

CE IL N VI5IBILI IN S AUIE MILES

IN I GE ( GG oF SE t Gt o8 GE GE GE GE GE GE GE FFEE1 I In 5 3 2 1., 2 1 1/2 1 1/4 1 3/4 5/8 I/Z 1/1 1 /4 u

NO CEIL I 53.4 53.4 53.4 53.4 53.4 51.4 53.4 51.4 51.4 55.4 53.4 513.. 53.4 S3.4 53.4 53.4

SE 23OoU bS 68 6 .8 6 5 6 64: 65.8 65.8 65.8 65. 8 65 65.8 6.8 65.8 65.8 65.8 65.8 b58SE 180001 66.2 66.2 66.2 6. 1 6. 66.2 66.2 66. 66.? b6.2 66.2 66.2 66.Z 66.2 bb.2 b6.2

GE l60001 66.4 66.4 66.4 66.4 66.4 66. 66 . 66. 66.4 66.4 66.4 66.4 66.4 6b.4 66.4 ,6E 140O001 66.9 66.4 66.9 66.9 66.9 66. 66.4 66.4 b6.9 66.9 66.9 66.9 66.9 6.9 66.9 6.9

bE Ioon 1 72.1 71.2 7 .2 71.2 12.2 71.2 1.2 11.2 71.2 71.2 71.2 71.2 71.2 11.2 12.2 71.2

E 00001 7 .9 75.2 75.2 1 . .2 15.1 75.1 75.1 ' 7 75.1 75.2 75.1 75.2 75.1 35.2 15.2IE 90001 75.7 75.9 75.9 75.9 75.9 75.4 15.9 75.9 75.9 76.9 75.9 75.9 75.9 75.9 15.9 5.9

GE 8800 80.6 80.7 8 8 a.1 80.7 80.1 80.7 0.7 0.7 80.1 80.7 80 .7 8 0.1 80.7 8.7

GE 70001 82.. 82.7 82.1 82.7 82.1 82.7 82.7 82.7 7 2.7 82.7 82.7 82.7 82.7 82.7 82.7 82.7GE 60001 84.6 84.8 84. 8 84.8 84.a 84.8 84.8 84. 84 .8 84.8 84.8 84.8 84.8 84.8 84.8 84.8

E 50001 88.3 88.6 88.7 88.7 88.7 88 .7 8 8.7 o.7 88.7 B.7 8.7 88.7bE 45001 89.6 90.3 90.2 90.1 90.2 90.2 90.2 90.1 90.2 90.2 90.1 90.3 90.1 90.1

uE 40001 92. 93.3U 91.2 91.1 93.1 93.1 93.2 93.1 93.2 93.2 93.2 93.2 93.1 93.3 I 3.2I 41.E 350l 9 3.6 94.1 94.2 94.2 94.1 94.3 9,.3 94.1 99.3 94.3 94.1 99.3 44.1 99.1 94.3 94.1SE 10.U01 95.4 96.1 96.1 96.2 96.1 96.3 96.1 96.3 961 96.3 96.1 96 96. 96.3 96.1 b.

GE 2500, 95.6 96.4 96.6 9b.b 96.8 96.8 96.8 96. 96.8 96.8 96.8 96.8 96.8 96.4 96.8 96.8SF 20001 95.4 96.8 96.9 96.9 97.2 97.2 97.2 91.2 97.2 97.2 97.2 97.2 97.2 97.2 97.2 97.2t I8CCOI 95.9 96.8 96.9 96.9 97.2 97.2 97 97 92 97.2 91.2 97.2 9. 91.2 47.2 972

(1E 2S. 0I 96.0 96.9 91.0 97.3 97.2 91.2 97.3 91.3 97.3 97.3 97.1 97.3 97.3 91.1 97.3 97.11260 10 96.1 9713 97.6 97.4 97.1 98. E 98 96.1 98.1 98. 1 98 . 98.2 98 98.1 98.1 98.2

GE 10001 96.2 97.8 97.9 91.9 98.1 98.4 98.6 98.6 98.6 98.6 98.6 98.6 :8.6 98.6 48.6 98.66E 9001 96.2 97.8 91.9 97.9 98.2 98.4 48.6 98.6 48.6 98.6 98.6 98.6 98.6 98.6 98.6 96.6GI 8301 96.3 98.1 98.2 98.3 98.6 98.9 99.0 9.0 99.0 99.0 99.0 99.0 99.0 99.0 99.0 99.a

t /O .9.1 94.2 98.2 8. 98. 9 98.9 99.0 94.0 99.0 99.0 99.0 99.0 99.0 99.0 99.0 99.0CE 6O0 96.1 98.2 98.3 98.4 48.7 99.0 99.2 99.2 99.3 99.2 99.2 99.3 99.3 99.3 99.2 94.2

GE 5330 96.1 9. 98. 98.4 98.7 99.9 99.1 99.7 99. 99.1 99.7 99.1 99.7 99.1 99.1 99.7

E Z(fl 96.4 98.1 98.6 98.8 99.1 99.7 99.8 99.8 99.8 99.8 99 9 99.8 99.8 A9 .8 9.8

GE 33301 96.4 98.3 98.6 98.9 99.6 99.9 200.0 200.0 200.0 200.0 200.0 105.0 200.0 200.0 200.0 200.0(t 233U 96.4 98.1 98.6 98.4 99.6 99.9 230.0 20.0 900.0 303.9 200.0 3I.0 133.3 100.0 O0.0 03.0

E z 1 96.4 98.3 98.6 98.8 99.6 99.9 100.0 200.0 100.0 200.0 200.0 100.0 I0.0 205.O a 00.0 1G3.O

SE oo 96.4 98.1 98.6 98.8 99.6 99.9 200.0 100.0 200.0 300.0 .0 200.0 200.0 00.0 100.0 3U0

•........ ....... ................... .... ..99o9..... ... o... ...... , ...... .. .. o.. ..... o ..o...., .... ... ...... .. ,.... ... ...


6LOBAL CLIMATOLOGY BRANCH OECENTAGE FREQUENCY OF OCCURRENCE OFACEILING VERSUS VISIBILITYUSAFETAC FROM HOURLY OBSLRVAIONSAIR JEATHER SERVICE/MAC

STATION NUMBER: 727859 STATION NA4E: FAIRCHILD AFB WA PERIOD OF RECORD: 76-8MONTH: APR HOURS(LSTI; 2100-230U

........................................... ~~~~~ .. . . . . . . . .. .... .. .. .. . ... . . . . . .. . . . . . . . .. .. ... .CEIL ING VISIBILITY IN STRIUTE MILES

IN I GE G GE G L GE G GG E OF GE E OE GL GE GI GE I EFEEl I !0 3 1/2 2 1 1/2 1 I/N 1 31/9 5/8 1/2 /lb 1/4........ .............. .......... ,..... .. ** . ............................................................................ .....

NO LIE I 6T.8 63.9 b3.9 63.9 b3.9 63.9 b3.9 63.9 63.9 63.9 63.9 63.9 63.9 63.9 b3.9 63.9

E 200001 1 0.2 7U.3 70.3 70.3 70.1 70.1 70.3 1U.3 10.3 70.3 70.1 70.3 70.3 70.3 10.3 7.IGE 18000 1 0.3 70.'. 70.9 70.9 10.9 70.9 10. 1 70 .N 70 .N 70.9 10.4 70.4 10. 70.4 70.V 10.4GE IbOU;I 10.9 70.6 70.6 70.6 10. 70. 6 70.6 ?7.b 70.6 70.6 70.6 70.b 10.6 b.6 7T.6 10.bGE 10001 10.7 1u.8 10.B 7U.8 70.8 70.8 10.8 70.8 70.8 70. 70.: 10.V 70.8 70. 1. 8 0.8GE 120001 73.0 0 1.1 73.1 71.1 73.1 73. 1 73 13.1 13.1 73.1 73.1 73.1 13.1 71.1 713.1 71.1

GE 1000|0 17.0 77.1 17.1 77., 77.1 77. 17.2 77. 2 77.2 7.3 77.3 77.3 77.3 1I.3 17.1 17.3GE 9000 78.9 79.0 79.0 19.3 79.0 79.0 79.3 79.1 79.1 79.2 79.2 79.2 19.2 79.2 19.2 79.2

.E 80001 A.7 8.2.8 2.8 :.1 8.8 82.9 2 82 S2..9 8.0 83.0 83.0 83.0 0 3V.0 Rt.0GE 10001 5.9 86.1 86.1 86.1 86.1 86.1 86.2 86.2 86.2 86 3 8 63 86.3 86.1 Vb.3 8V.IGE 60001 87.8 88.0 88.2 88.2 88.2 88.2 88.3 N 8 8 88. 8. 88 . 88.4 8. BR .4

GE 90001 91.1 91.9 92. 92 92.1 92.1 92.2 92.2 92.2 92.3 92.3 92.3 92.3 92.3 92.3 92.3GE 95001 93.1 91.1 93.6 93.0 91.6 93.6 93.7 93.1 83.7 93.8 93.8 93 8 93.R 93.B 93.8 9 3.8OE I91001 93.1 91.9 94 . 1 99.1 99. 9".1 99.2 99.2 99.2 99.3 99.1 99.3 99.3 9 1,3 94.3 9.3GE 35101 99.9 95.2 95. 95.9 95.9 95.9 95.6 91.9 9S.6 9 5.7 91.7 9.7 %. a 95.8 9 .8 9b. 6GE 30001 95.1 95.7 95.9 95.9 95.9 95.9 96.0 96.0 96.0 96. 96.3 96.1 96.2 96.2 96.2 96.2

GE /sO01 95.8 96.9 96.1 96.1 96.7 96:7 96.8 96. 96.8 96.9 96.9 96.9 97.0 91.0 97.0 97.0GE 20001 .0 97.0 97.2 97.2 97.2 97.2 97.3 91.3 97.3 97.9 97.9 7.9 97.6 97.6 97.6 97.6

GE 181101 96.0 91.0 97.2 91.2 97.Z 97.Z 97.3 97.3 97.3 97.9 97.9 97.9 91.6 ?b .6 97.6 97.6GE i5001 96.0 97.0 97.2 97.?2 97.2 97.2 9z .3 97.3 97.3 97.9 97.4 91.4 97.6 97.6 97.6 97.bGE 12001 96.2 97.2 97.9 97 97.9o 97.9 97.6 97.6 97.6 97.7 97.7 97.7 917. 97.8 91.8 97.8

bE 10001 96.2 91.9 97.7 97.1 97.8 91.8 97.9 98.0 : 8.0 98.1 98.1 98.1 98.2 98.2 98.2 9b.2GE 9001 96.3 97.1 98.0 98.0 98.1 98.1 98.2 98.3 98.3 98.8 98.9 98.9 99.6 98.6 98.6 9V.6GE BUD 96.3 97.9 98.2 98.2 98.3 98.3 98.9 98.6 98.6 98.7 98.7 98.7 98.8 98.8 98.8 98.8GE 7001 96.6 98.3 98.9 98.9 986 98.6 98.7 98.8 98.8 98.9 98.9 9B.9 99.0 99.0 99.0 99.3GE 6001 96.6 98.1 98.9 98.9 98.6 98.6 98.7 98.8 98.8 98.9 98.9 98.9 99.0 99.3 99.0 99.0

UF 6001 96.6 98.3 98.8 98.8 98.9 98.9 99.0 99.3 99.1 99.2 99.2 99.2 99.0 99.3 99.3 99.3.E . 1301 96.6 98.2 98.9 99.3 99.3 99.1 99.2 99.3 99.3 999 99.9 99.2 99.6 99.6 99.6 99.6

GE 3UI 96.6 98.2 98.9 99.1 99.2 99.2 99.1 9.9 99.9 99.6 99.6 99.6 99.7 99.7 99.7 99.1GE 2 U0 96.6 98.2 98.9 99.3 99.2 99.2 99 99. 99. 99.7 99.7 99.8 99.9 99.9 99.9 99.9OF 1001 966 98.2 98.9 99.1 99.2 99.2 99.3 9. 99.9 99.7 99.1 99.8 130.0 100.3 100.0 1 0.0

bE 01 96.6 98. 98.9 99.1 99.2 99.2 99.3 4. 99.8 99.1 99.1 99.8 103.0 DoU.3 |O0.0 100.0.. . ............... .. .. .. .. .............. °. . . ................... °.. ..9:.... 99: ...91: ...... ........ . . . . . . . .

TOAL NUMBER OF OBSERVATIONS; 930

AU-A159 700 FAIRCHILD AFS WASHINGTON REVISED UNIFORM SIARY OFSURFACE WEATHER OBSER..(UI AIR FORCE ENVI M NTAL 3TECHNICAL APPLICATIONS CENTER SCOTT A.. SEP 6SO)NCLASSIFIED USAFETAC/OS-S5/051 F/O 4/2 NL-"'II,,,"""I""IIIIIII"IIIII""III-EllllllllnllIhhhhhhhhhu -

3 1112-2

2-0

- 2 1* 1* 6 ..

0108*LOBAL CL1M83OEJ69 BRANCH a|RCLNIAG[ FREO.UCY OF OCCURRLNCE OF CEILING VERSUS VISIBILITY rUSAFETAC FROM HOURLY OBSERVATIONSAI IR BEA H BERVICE/MAC

STATION NUMBER: 727855 STATION NAE: FAIRCHILO AF8 WA PERIOD OF RECORD: 76-A5MONTH: APR HOURSILSTI: ALL

IN G G1. E GE G0 GE 0E GE GE GE G G E GE I1 L 1. GL 61EFEET I 10 b 5 4 3 Z 1/2 2 1 1/2 1 1/4 1 3/4 5/B 3/2 5/16 1/4 U

...... °.....o...,o........... .. o.......oo.......... . ,............ .... ........ °...... ...... ...... .... .. .... ........... .

NO CEIL I 52.1 52.4 SZ.4 52.5 52.5 52.5 52.5 52.6 52.6 52.6 52.6 52.6 52.6 52.? 52.8 92.8

UE 200003 60.5 60.9 60.9 61.0 61.0 b1.1 b:. b1. 6!.1 63.1 b61 b.3 61.2 61.3 b.3 6:.61E :80001 61.0 61.3 61.9 63.9 61.5 61.5 b6.5 61.0 63.5 61.6 61.6 61.6 6b 6 61.7 63.8 b6.AG1 E60003 61.2 63.6 63.6 61.7 61. A 61.B 61.8 61.8 63.8 61.8 61.8 61.9 62.0 62.0 62.1bE I000 62.0 62.- 62.. 62.5 62.5 62.6 62.5 62.6 62.6 62.6 62.6 62.6 62.7 62.1 62.6 62.8GE 120001 69.7 65.2 65.3 65.3 65.9 65.9 65.9 65.4 65.9 65.9 65.5 65.5 65.5 65.6 65.7 65.1

61 100001 68.9 69.5 69.6 69.1 69.8 69.8 69.8 69.9 69.9 69.9 69.9 69.9 70.0 1.0 10.3 70.201. 90001 70.5 12 |.3 71.9 31.5 71.0 11.5 71.5 11.5 73.6 71.6 71.6 11.6 71.7 13.8 71.8GE 800l 79.3 79.8 79.9 75.3 75.3 70.1 75. 1 S 77. 52 75.2 79.2 75.2 79.3 75.3 75.4 75.5(E 70001 76.8 77.5 77.6 77.7 771 77.8 77 .9 77.9 77.9 77.9 78.0 78.0 78.0 78.1 1B.2 76.2GE 60001 78.3 79.2 79.3 79.9 79.5 79.5 79.5 79.6 79.6 79.6 79.6 79.6 79.7 79.8 19.8 19.9

6E 50001 81.7 82.6 82.8 82.9 83.0 83.3 87.1 83.1 83.3 83.2 83.2 83.2 83.2 83.3 83.9 83.9

G 99001 81.3 89.2 89.9 89.5 8. 6 89 .7 89.7 89.7 89.7 89.8 89.8 89.8 89.9 89.9 85.063 9000( 86.9 87.9 81.6 87.7 81. 81.9 61.9 83.9 87.9 88.0 88.0 88.0 86.0 88.3 88.2 88.2GE 35003 89.0 90.2 90.9 90.5 90.7 90.7 90.7 90.7 90.8 90.8 90.8 90.8 90.9 90.9 93.0 91.1

bE 30O01 93.3 92.5 92.7 92.9 93.1 93.1 93.3 93.2 93.2 93.2 93.? 93.2 93.3 93.3 93.9 93.5

61. 250U1 92.0 93.9 93.6 93.8 99.0 99.0 99.0 99.1 99.1 99.1 9.3 99.1 99.2 99.3 99.3 99.96E 20603 925 9q.1 99.3 99.5 99.7 99.7 99.8 99.8 99.8 99.8 99.8 99.8 99.9 95.0 9:. 95.3

61. 1801 92.7 99.2 99.4 99.6 99.8 99.9 99.9 99.9 95.0 95.0 95.0 95.0 95.3 96.1 9 1.2 96.3E 19003 91.0 99.7 99.9 9S.2 95.9 95.9 95.5 95.5 95.5 95.6 95.6 95.6 95.7 95.; 95.8 95.86b1 1201 93.3 95.1 95.9 95.7 95.9 96.0 96.0 96.0 96.3 96.1 96.3 96.1 96.2 96.3 96.3 9b.9

GE 10001 93.5 95.6 95.9 96.3 96.6 96.6 96.7 96.1 96.8 96.8 96.8 96.8 96.9 91.0 97.0 97.3GE qUD| 93.7 96.8 96.3 96.5 96.8 96.9 96.9 91.0 97.0 97.0 97.3 97.a 97.3 91.2 97.1 91.3G 8603 93.8 96.0 96.9 96.8 97.1 97. 92 97.2 97.3 97.3 97.3 97.. 97.9 91.5 97.5 97.6 9.7GE 7003 91.9 96.2 96.6 97.3 97.9 97.5 97.5 97.6 97.6 97.6 97.7 97.7 97.8 97.9 97.9 96.3GE 6001 99.3 96.6 97.0 97.5 98.0 98.0 98.1 98. 2 98.2 98.2 98.1 98.3 96.4 98.9 98.9 98.6

61 9003 99.2 96.1 97.3 91.8 98.9 98.5 98.6 98.6 98.1 98.7 98.8 9.,8 98.9 99.0 99.0 99.161 9UO 99.3 96.9 97.5 98.3 98.7 98.8 98.9 99.0 9 99.1 99.2 99.2 99.3 99.9 99.4 99.561 UOI 99.3 97.0 97.b 98.2 98.9 99.0 99.9 99.2 99.2 99.3 99.9 99.5 99.6 99.7 99.7 99.86 .1001 99.3 97.0 97.6 98.2 98.9 99.0 99.2 99.2 99.9 99.5 99.5 99.7 99.8 99.9 103.361 3003 93 97.0 97.6 98.2 98.9 99.0 99.1 99.2 99.2 99.9 99.5 99.5 99.7 99.8 99.9 100.0

61 0l 9%.3 97.0 97.6 98.2 98.9 99.0 99.1 99.2 99.2 99.9 99.5 99.5 99.7 99.8 99.9 100.0

. .I-........ . -......... . ..... ..... .. ... .. ....- ...O.... . -...---...... .... ..... . .....--... ... ..


11.111UAL CLIMAIOLO BRANCH ERCENIAGE FREwUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITYUSAFETAC FROM HOURLY OBSERVATIONSAIR WEATHER SERVIC/M AC

STATION NUMBER: 727855 STATION NARE: FAIRCHILD AFB WA PERIOD OF RLCORO: 76-85MONTH: MAY HOURSiLS|I: 0000-0203

LAEIL INGVSIIITISTTEMIS

IN I GE GE GE GE GE GE GE G GE GE GE GE GE Gf GE GEF EE I 10 D 5 4 3 2 1/2 2 1 112 1 1/4 1 3/N 5/8 1/2 5/16 1/ 0

. . ......... ....... ......... ............ . . ... . ... . . ... . ... .. .... .. . .. .. .. ........ ....... ,...........

ND CEIL I b3.4 63.9 63.9 63.9 63.9 64.1 64.1 64.1 64.1 64.1 64.I 64.1 b4.2 64.2 64.2 64.2

GE 20000: 69.0 69.4 69.N 69.4 69.4 69.7 69.7 69.7 69.7 69.7 69.7 69.1 69.8 69.8 69.8 B9.8GE 180002 b9.1 69.5 69.5 69.5 69.5 69.8 69.8 69.8 69.8 69.A 69.8 69.A 70.0 70.0 70.0 10.oGE 16.002 69.1 69.5 69.5 69.5 69.5 69.8 69.8 69.A 69.8 69.8 69.8 69.8 70.0 70.0 70.0 10.0GE 140001 69 69.9 69.9 69.9 69.9 70. 1 70 70.1 70.1 70.1 70.1 70.1 70.3 70.1 70.3 71.0GE 120U01 70.5 71.0 71.0 71.0 71.0 71.2 71.2 71.2 71.2 71.2 71.2 71.2 71.4 71.4 71.4 71.4

GE 10000 74.1 74.6 74 .6 74.6 74 7. 74.8 7.8 74.8 78.8 74.8 74.8 75.0 75.0 75.0 75.1GE 90002 76.4 76.9 76.9 76.9 76.9 77.1 77.1 77.1 77.1 77. 1 77.1 77. 77.3 77.3 77.3 77.1GE 8000 81.2 81.8 81.8 81.8 81.8 82.0 82.0 82.0 82.0 82.0 82.0 82.0 82.2 82.2 82.2 82.2GE 70001 84.0 8:.5 84.5 84.5 84.5 84.7 84.7 84.7 84.7 8 4.7 84.7 8.7 8N.9 84.9 89.9 84.9GE 60001 85.9 86.5 86.5 86.5 86.5 86.7 86.7 86.7 86.1 86.7 86.7 86.7 86.9 86.9 Ab.9 16.9

GE 5100 88.5 89.2 89.2 89.2 89.2 89. 89.4 89.4 89.8 89.4 89. 89.4 89.6 89.6 89.6 89.6GE 4SOO 90.3 90.9 90.9 90 .990.9 91.2 9.2 91.2 91.2 91.2 92,? 91.2 91.4 91.4 91.4 91.46E 40002 91.9 92.6 92.7 92.7 92.7 92.9 92.9 92.9 92.9 92.9 92.9 92.9 93.1 93.1 91.1 93.1bE 35002 92.9 93.7 93.8 93.8 93.8 94.0 94.0 94.0 94.0 94.2 94.2 94.2 94.2GE 3000 93.8 94.8 94.9 94.9 94.9 95.1 9 .1 95.1 95.1 95.1 95.1 9.1 95.3 95.1 95.3 95.3

GE 25002 94.0 95.1 95.2 95.2 95.2 95.4 9.5.4 95.4 95.4 95.4 95.4 95. 95.6 95.6 94.6 95.bGE 20002 94.1 95.5 95.6 95.6 RS6 95.9 95.9 95.9 95.9 95.9 95,9 96.9 96.1 96.1 96.1 96.1GE 18001 94.1 95.5 95.6 95.6 95.6 95.9 95.9 95.9 95.9 95.9 95.9 95.9 96.1 96.1 9b.1 96.1bE 15002 94.3 95.9 96.0 96.3 96.0 96.2 96.2 96.2 96.2 962 96.2 96.2 96.4 96.4 96 95.GE 2C0I 94.3 95.9 96.0 96.0 96.0 96.2 96.2 96.2 96.2 96.2 96.2 96.2 96.4 96. 96.4 96.4

GE IC00 94.5 96.2 96.3 96.3 96.3 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.7 96.7 96.7 96.7bE 9002 94.5 96.2 96.3 96.3 96.3 96.5 96.5 96.5 96.5 96.5 96.5 98.5 96.7 96.7 96.7 96.7GE 8002 94.8 96.5 96.6 96.6 96.6 96.8 96.8 96.8 96.8 96.8 96.8 96.8 97.1 97.1 97.1 97.1GE 701 95.1 97.3 97.4 97.4 97.4 9,.6 97.6 97.6 97.6 97.7 91.7 97.7 91.9 91.9 97.9 87.8GE 6002 95.1 97.4 97.6 97.6 97.7 97.9 97.9 97.9 97.9 98.0 98.0 98.0 98.3 98.3 98.1 9.1

GE 5oo 95.2 97.8 98.0 98.0 98.1 98.4 98.4 98.4 98.4 98.6 98.7 98.7 98.9 98.9 98.9 98.9GE 4002 95.4 98.1 98.4 98.5 98.6 98.8 98.8 98.8 98.8 98.9 99.1 99.1 99.3 99.1 99.3 99.3GE 3001 95.5 98.4 98.7 98.8 98.9 99.1 99.1 99.1 99.1 99.2 99.5 99.5 99.7 99.7 99.7 99.7GE 2002 95.6 98.5 98.8 98.9 99.0 99.2 99.2 99.2 99.2 99.3 99.6 99.6 99.8 99.8 90.9 00.0GE 1o0 95.6 98.5 98.8 98.9 99.0 99.2 99.2 99.2 99.2 99.3 99.6 99.6 99.8 99.8 99.9 100.3

GE 02 95.6 98.5 98.8 98.9 99.0 99.2 99.2 99.2 99.2 99.3 99.6 99.6 99.8 99.8 99.9 100.0... .. ! . . :..... . ...... . . .:.. . . . . ........ .......... . .. ......... ....................... ............•....... ........


I

GLOBAL CLIMOLOGYBRANCH ERCENAGE FR QUENCY Of OCCURRENLE OF CEILING VERSUS VISIBILITyIu:RANCHAc FROM HOURLY OBSERVATIONS

AIR A[ATHER SERVICE/MAC

STAIION NUMBER: 727855 STATION NA4F: FAI9CHIEJO AFB WA PERIOD OF RECORD: 76-V5MONTH: MAY HOURSILSII; 03U0-05U0

C~ iL 6 .. ... .... .... ... .... .... ... .... Io. ... , oi i ........... ... . ..... ..... .... ... ..... ......C...........................G .. VISIBILOTY IN STATUTE MILES

IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GEFCET , 10 6 5 32 112 2 1 1/2 1 19 1 3/N 518 112 5116 1/9 0

.oo .. ..... ........ ....... . ....oo...ooo.o.........°,o.ooo,...oo..o.oo..... ....... ..oo.o....,o.....oo o o ~ , .,.,, ... .. o.o..

NO CEIL I 54.2 5N.6 5N.9 55.3 55.6 55.6 55.6 55.6 55.6 55.6 55.7 55.7 55.8 55.8 55.8 56.G

GE 2000O1 60.8 61.2 61.5 61., 6 .2 62.2 62.? 62.2 62.2 62.2 62.1 62.3 62. 61. 62.9 6?.7GE 18000 b0.9 61.3 61.6 61.8 62.3 62.3 62.3 62.3 62.3 62.3 .9 62.9 62 2.5 62.5 b 2.8

GE 160001 1.0 61.9 11.1 61.3 62.N 62.9 62.9 62.9 62. 62.9 62.5 62.5 62.6 62.6 62.6 b2.9GE 146001 62.0 62.9 6Z. 7 62.. 63.9 63. 3.9 61. , 3 63 3.9 63.5 63.5 63.6 63.6 63.6 61.9bE 120001 65.2 65.7 66.0 66.1 66.6 66.6 66.6 66.6 66.6 66.6 67.0 67.0 67.)1 67.1 67.1 67.4

GE 100001 69.6 70.0 70.3 70.N 71.1 71.1 71.1 71.1 11.1 71.2 71.5 71.5 1.6 71.6 71.6 ;1.9GE 90001 70.6 71.1 71.9 71.5 72.Z 72.2 72.2 72.2 72.2 72.3 72.6 72.6 72.7 72.7 72.7 73.0GE 8000 75.6 76.2 76.5 76.6 77.9 77.9 77.5 77.6 77.6 77.7 78.0 78.0 78. 1 78. ' 1 78.9GE 70001 80.0 80.5 80.8 80.9 81.7 81.7 81.8 81.9 1.9 82.0 82.3 82.3 82.9 82.9 82.9 82.8

GE 60001 81.9 82.0 82.3 82.9 83.2 83.2 83.3 83.9 83.9 83.5 81.9 83.9 89.0 89.a 89.0 89.3

GE 50001 83.7 89.9 89.7 89.8 85.6 85.6 85.7 85.8 85.8 85.9 86.2 86.2 86.3 86.3 86.3 8.7GE 95001 89.9 85.8 86.1 86.2 87.0 87.0 87.1 87.7 87.2 87.3 87.6 87.6 7.8 87.8 87.8 88.)GE 90001 85.7 86.2 86.6 86.7 87.9 87.9 87.5 87.6 87.6 87.8 88.1 88.1 88.2 88.2 88.2 88.5GE 35001 86.5 867.6 a8.0 88.1 88.8 88.8 88.9 89.1 89.1 89.2 89.5 89.5 89.6 89.6 89.6 89.9GE 30001 87.0 88.2 88.6 88.7 89.5 89.5 89.6 89.7 89.7 89.8 90.1 90.1 90.2 90.2 90.2 90.6

GE 25001 87.9 89.9 89.8 89.9 90.7 90.7 90.8 90.9 90.9 91.0 91.3 91.3 91.9 91.9 91.9 91.8GE 2OO01 V8.9 90.) 0.6 90.? 91.9 91.9 91.5 91.7 91.7 91.8 9.1 92.1 92.2 92.2 92.2 92.5GE 18001 88.6 90.2 90.7 90.8 91.5 91.5 91.7 91.8 91.8 91.9 92.2 92.2 92.3 92.3 92.3 92.6

GE 15001 89.3 91.2 91.7 91.8 92.5 92.5 92.6 92.7 92.7 92.8 93.2 93.2 93.3 93.3 93.3 93.6.E 12001 89.7 92.1 92.5 92.6 93.9 93.5 93.6 93.7 93.7 93.8 99.1 99.1 94.3 99.3 94.3 99.6

6G 1O01 90.2 9Z.6 9T.1 912 93.9 99.0 99.9 99.5 99.8 99.8 99.9 99.9 95.0 95.0 95.0 95.GE 9001 90.9 92.8 93.3 93.9 99.1 99.3 91.6 99.7 99.7 99.8 95.1 95.1 95.2 95.2 95.2 95.6GE 8UDI 90.7 93.9 93.8 93.8 99.7 99.8 95.1 95.2 95.2 95.3 95.7 95.7 95.8 95.8 95.8 96.1GE 7Uffn 90.8 93.7 99.1 9 96.2 96.2 96.2 96.6G[ 6001 90.9 99.9 99.8 99.9 95.9 96.0 96.3 96.9 96.9 96.6 97.0 97.0 97. 1 97.1 97.1 97.9

GE 5001 91.0 99.6 95.0 95.1 96.2 96.3 96.6 96.7 96.7 97.0 97.3 91.3 97.9 97.9 97.9 91.7GE 9001 91.2 99.8 95.2 95.3 96.5 96.6 97.0 97. 1 9 97.9 97.7 97.7 97.8 97.8 97.8 98.2GE 3UOi 91.3 99.9 9S.6 95.7 96.9 97.0 97.3 97.9 97.9 97.8 98.2 98.2 98.3 98.3 98.3 98.6

(E 2001 91.3 95.0 95.7 95.9 97.1 97.2 97.5 97.6 97.6 98.0 98.9 98. 98.6 98.6 98.9 99.7fE 1001 91.3 95.0 95.7 95.9 97.1 97.2 97.5 97.6 97.6 98.0 98.9 98.9 98.6 98.6 98.9 100.0

GE 0T 91.3 95.0 95.7 95.9 97.1 97.2 97.5 97.6 97.6 98.0 98.9 98.9 98.6 98.6 98.9 130.0


I

GLOBAL. CLIMATOLGE BRANCH -ERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITYUSAFETAC FROM HOURLY OBS RV TIONS

AIR WAAHER SERVICE/AC

STATION NU4BLR: 72785 STATION NA4E: FAIRCHILD AFB WA PERIOU OF RECORD: 76-8SMONTH: MAY HO URSILST). 0bU9-003

C(IL INS RISIBILITY IN STATUTE MILLS

IN I GE GE 6L G GE GE GE G GE GE GE GE GE GE GE 6EFEEl I 10 6 5 3 2 1/2 2 1 1/2 1 1/N 1 3/ / a 1/2 51b 1/N 0.. ,....... ..... .............. .... .. ......... ................... ,.......... ....... ........ ,................ ..... ,, .... ....

NO CLIL I 5Z.8 53.4 53.5 53.8 5N.0 5.0 54.0 54.0 54.0 54.0 54.0 54.0 S4.0 S4.0 54.0 5.1

GE 20000i bi.6 62.5 b2.6 2.8 61.0 63.0 6.2 632 63.2 63.2 63.3 63 .3 63.3 61.3 T.3 63.4GE IA8OOI b .8 62.7 62.8 63.0 61.2 63.2 63.N 63.4 63.4 61.4 63.5 6 3.5 63.5 63.5 63. bI.7GE 160001 61.9 62.8 62.9 63.1 63.0 63.3 63.5 63.6 63 .5 63.5 63.7 63.7 b 1. 7 63. I 3.7 63.8

El 40001 62.9 63.8 63.9 64.1 6.0 64.3 64.S 64.6 64.5 64.6 64.6 64.6 64.6 64.6 b4.6 64.7

bE iOOO b6.1 67.1 67.2 67.5 67.7 67.7 68.0 68.0 68.0 68.0 68.1 68.1 68.1 68.1 6B.1 4.2

GE UOUO 70.4 71.6 71.1 12.3 72.5 75.5 72.7 72.7 72.7 72.7 72.9 72.9 72.9 72.9 12.9 73.0GE 90001 72.0 73.2 73.3 73.9 74.i 74.1 7 . 4.3 74.3 79.3 74.6 7.5 74. 5 74 7.S 74.6GE 80031 76.1 76.3 76.5 77.3 77.2 77.2 77.4 77.5 77.5 77.7 78.0 78.0 78.0 7A.0 19.0 76.1GE 70001 78.2 79.8 79.9 A0.4 80.6 80.6 0..9 81.0 81.0 81.2 81.4 81.4 81.4 BI.4 RI.4 81.5GE 60001 79.6 81.2 81.3 81.8 82.0 82.0 82.3 82.4 82.8 82.7 82.9 82.9 82.9 82.9 82.9 3.0

GE 50001 AZ.0 84.3 84.4 84.7 85.2 BS.2 BS.4 8S.S 85.6 85.8 86.0 86.0 86.0 86.0 6.0 86.1GE 45001 81.3 85.6 85.7 8b.2 86. 86. 86.7 8 6.8 87.1 87.0 87.3 871 871 87.0 87.4GE 40001 84.4 87.1 87.3 87.6 8 88.1 88 .3 8. 88.4 88.7 88.9 88.9 8 a.9 88.9 1 8.9 89.0GE 35001 86.1 87.3 84.0 88.S 88.7 88.7 88.9 89.0 89.0 89.4 89.6 89.6 89.6 84.6 89.6 89.7Li 3000 86.7 Be.7 88.9 89.5 89.8 89.8 90.0 90.1 90.1 90.4 90.6 90.6 90.6 90.6 90.6 90.8

GE 26001 86.0 89. 89.7 90.2 90.6 90.5 90.8 90.9 90.9 91.2 91.4 91.4 91.4 91.4 91.4 91.5GE 20001 86.3 90.0 90.2 90.8 91.2 91.2 91.4 91.5 91.6 91.8 92.0 92.0 92.0 92.0 92.0 92.2GE 18001 86.0 90.1 90.3 90.9 91.3 91.3 91.5 91.6 91.6 91.9 92.2 92.2 92.2 92.2 92.2 92.1

GE 16001 86.6 90.6 91.0 91.5 91.9 91.9 92.2 92.3 92.3 92.6 92.9 92.9 92.9 92.9 92.9 90.0GE 12001 87.3 91.5 91.8 92., 92.8 92.8 93.0 93.1 93.1 93.4 91.8 93.8 93.8 91.8 90.8 90.9

6E 10001 87.8 92.5 92.9 93.4 93.9 93.9 94.1 94.2 94.2 9:. 94.8 9Z.9 94.9 9.9 94.9 95.1GE 9UO 88.2 92.8 93.2 93.8 94.2 94.2 94.4 94.6 94.6 94.8 96.? 96.1 95.1 95.3 96.3 95.4GE 8001 8:.3 93.1 93.5 94.1 94.6 94.5 9.7 94.8 94.8 9S.2 96.6 96.6 96.6 9S.6 96.6 9S.TGE 7001 AA.N 93.4 93.9 94.6 96.1 95.I 96.3 96.4 91.4 91.7 96.0 96.1 96.1 96.1 96.1 96.21.E 6001 88.7 94.0 9. 95.0 95.99.9 96.1 96.2 96.2 96.6 96.9 97.0 97.0 97.3 97.0 91.1

GE 601 88.7 94.2 94.8 9 .9 96.9 96.9 97.1 97.2 9 .2 97.5 97.8 98.0 98.0 98.0 98.0 98.1

GE 4001 88.7 94.2 9 .1 96.1 9 .1 972 97.1 98.2 98 2 98.6 98.9 99.0 99.0 99.0 9.0 99.1

GE 3001 88.7 94. 95.1 96.2 97.0 97.4 98.0 98.4 98.4 98.8 99.1 99.2 99.2 99.2 99.4 99.6

GE 2301 88.7 9 1. 96.1 96.2 97.3 97.4 98.0 98.4 98.4 98.8 99.1 99.2 99.2 99.2 99.4 99.7GE 1001 88.7 94.4 95.1 96.2 97.1 97.4 98.0 98.4 98.4 98.8 99.1 99.2 99.2 99.2 99.6 103.0

GE Ol 88.7 94.4 9S.1 96.2 97.1 97.. 98.0 98.4 98.4 98.8 99.1 99.2 99.2 99.2 99.6 100.0............ .B ..E . .. . ....... ............ ..... .... ..-.. ...N. 90 ..... ......


GLOBAL CLIMATOLOGY BRANCH 'ERCENTAGE FREQUENCY OF OCCURRENLE OF CEILING VFRSUS VISIBILITY

UA EAC'' E"1 FROM HOURLY OBSERVATIONS

STATION NUMBER: 127855 STATION N8IE: FAIRCHILD AFB OA PERIOD Of RECORD: 76-85MONTH: MAY HOURSILSTI) J900-1100

CEII 41 VIS18!L1TY 04 STAOEU/[ MILES

IN I GE GE GE GE GE GE GE GE GE GE GE GE GEL E GE GEFEE I 10 b 5 4 3 2 112 2 1 1/2 1 1/ 4 1 W/ 5/8 I1? /lib I /

NO CEll 47.7 48.3 48.3 48.3 48.3 48.3 48.3 48.3 48.3 48.3 48.3 48.3 48.3 48.3 48.0 4b.3

GE 20000 98.9 59.5 59.6 59.5 99.6 59.6 59.6 59.6 596 59.6 59.6 59.6 596 59.6 59.b S9.bGE 18000 591 s9.? 59.b 59.8 59.8 59.8 59.8 59.8 59.8 s9.8 59.8 59.8 59.8 99.8 5 9.8 59.8GE 16000 59.2 59.8 59.9 S999 59.9 59.9 59.9 59.9 59.9 59.9 59.9 59.9 59.9 59.9 59.9 59.9GE 1400 59.9 60. 60.5 60.5 b0.5 60.5. 60 60.5 60.5 60.5 60.5 60. 5 60. bS.5 60.5 60.5GE 12000 61.7 62.3 62.4 62.4 62.4 62.4 62.4 62.4 62.1 62.4 62.4 62.4 6Z.4 62.4 62.4 b2. 4

UE 100001 65.9 6b.8 66.9 67.2 67.2 67.2 67.2 67.2 67.2 67.3 67.3 67.3 67.3 67.3 b7.3 61.3GE 9OO 67.! 68.0 68.1 68.4 68.9 68.4 68.4 68. 68. 68.9 68.5 68.5 68.S 68.s 68.5 b6.5GE 8000 69.4 70.2 70.3 70.6 70.6 70.6 70.6 70.8 70.8 71.0 71.0 71.0 71.0 71.0 1. 0 71.0LE 7000 71 .3 72.5 72.6 72.9 72.9 72.9 72.9 73.0 73.0 73.2 73.2 73.2 73.2 73.2 13.2 3.2GE 60001 72.3 73.1 73.7 74.J 74.0 74.0 74.0 74.1 74.1 74.3 74.3 7 4.3 74.3 74.3 74.3 74.3

6E 50001 74.8 lb.2 76.3 76.7 76.7 76.7 76.7 76.8 76.8 17.0 77.0 77.0

77.0 77. 77.0 77.0GE 45G0 75:8 77.1 77.2 17.S 79 5 77 .5 17.17.5 77.6 77.8 78.2 78.2 78.2 76.2 18.2 78.2GE 40001 78.7 81.0 81.1 81.4 81.4 81.4 81.4 81.5 81.5 81.7 82.0 82.0 82.0 82.3 82.0 82.3GE 3S0 BI.N 83.8 83.92 4 84.2 .2 84 .2 8.3 4 84. 84. 84.8 84.8 84.8 84.8 84.8Gr 30001 84.6 87.5 87.6 88.1 88.1 88.1 88.1 8.2 88.2 88.4 88.7 88.7 88.7 88.7 88.7 88.7

.E 29003 86.0 89.4 89.9 89.9 89.9 89.9 89.9 90. 0 90. 90.2 90.9 90.9 90.5 90 .5 90.9 90.9GE 2000 86.8 90.2 90.4 90.9 90.9 90.9 90.9 91.0 91.0 91.2 91.S 91.9 91.9 91. 91.5 91.5GE 1800 .87. 90.4 90.6 91.2 91.2 91.2 91.2 91.3 91.3 91.5 91.8 91.8 91.8 91.8 91.8 91.8GE 1900 88.1 91.8 92.0 92.6 92.6 92.6 92.6 92.7 92.7 92.9 93.2 93.2 93.2 93.2 93.2 93.2GE 12001 90.1 94.6 94.8 95.4 95.4 95.A 9S.4 95.5 95.5 95.7 96.0 96.0 96.0 96.0 96.0 96.0

LE 1000: 91.1 9.9 96.1 96.7 96.7 96.7 96.7 96.8 96.8 97.0 97:. 471 97.3 91.3 97.3 97.3GE 900 91.6 96.2 96.9 97.3 97.1 97.1 97, 97.2 97.2 97.4 97.7 97.7 97.7 97.7 97.7 97.7GE 800 91.8 96.9 96.7 97.2 97.3 97.3 97.3 97.4 97.4 97.6 98.0 98.0 98.0 98.0 98.0 98.3GE 700 91.8 96.6 96.8 97.3 97.4 97.4 97.4 97.9 97 97 97.7 98. 98.3 98.1 98.1 98.1 9.1GE 6003 91.9 96.8 97.0 97.5 97.7 97.7 97.7 97.8 97.8 98.1 98.4 98.4 98.4 98.4 98.4 98.41

GE S0I 81.9 96.8 97.2 97.8 96.3 98.3 98.3 98. 98.4 98.6 98.9 98.9 98.9 98. 98.9 98.9GE UO 97.9 971 97.5 98.3 98.7 98.8 98.8 99.1 99.1 99.4 99.7 99.7 99.7 99.7 99.7 99.7

GE 3001 91.9 97.1 97.5 98.4 98.8 98.9 98.9 99.2 99.2 99.5 9 9.8 99.8 99.8 9. 99.8GE 2UO 91.9 1 97.9 98.4 98.8 98.9 98.9 99.2 99.2 99.6 99.9 99.9 100.0 100.0 100.0 130.0GE 1on0 91.9 97.1 97.S 98.4 98.8 98.9 98.9 99.Z 99.2 99.6 99.9 99.9 100.0 100.0 100.0 133.0

GE (3 91.9 97.1 915 98.4 98.8 98.9 98.9 99.2 99.2 99.6 99.9 99.9 1uO.7 100.0 100.0 100.0


I~

A L061 BRANCH PERCENTAGE FREQUENCY OF OCCURRLNCE OF CfILING VERSUS VISIBILITY,~~ USFTCOM HOURLY 013S RV 11 0N5

t AI EAJH R RVICE/MAC

STATION NUMBER: 727855 S 1ATION NA4 : FAIRCHILD AFB WA PEiOZ OF RECORD: 6-85

ONTH: HAY HOURSILSI: 12U-14UU

CIL.N34 Vi6LILITY 1N STATUIF MILLS

14 I G E G E G G E G G G 6 , GE G G I GE L ( f 61 L GFE ET : In A 5 3 2 1/ 2 1 112 1 1/4 1 314 5/8 Ia I /16 2l1.......--............. o..,. . .... *- .. *.,*.,,,.. ...... o .... ........... ..* ...... ,° , , **..* .... .. * . *, .... • ....... ... *.

N0 CE]L I 35.6 35.7 35.7 35.7 35.7 15.7 35.7 35.7 35.7 35.7 35.7 35.7 15.7 35.7 35.7 35.7

GE ZOOM00 46.9 47.0 4l.0 47.3 O47 . 0 4 7.0 47.0 41.0 47.0 47.0 47.0 47.0 4.0 .7.0 47.061 180001 48.0 48.1 48.1 48.1 48.,11 4: 1 48.: 8. 8. 448.: . 48.1 48.3611 160001 48.0 48.1 48.1 48.3 48.1 48.1 8.1 48.1 48.1 48.1 48.1 48.8 48.1 48.3 48.1 48.1GE 140U01 48.7 4 .8 48.8 48.8 48.8 48.8 48.8 48.8 48.8 48.8 48.8 48.8 48.8 48.A 4A.8 AR.86E 12000 51.1 51.2 51.2 51.Z 51. 51.2 51.2 51.' 51.2 51.2 51.2 51.2 51.2 51.2 51.2 51.2

6E 100001 54.4 54 .7 54.7 54.8 55.0 55. 0 5.0 55.1 al 55. 5.1 55.1 55.1 55.1 65.1 5.1 55.2GE 90001 55.0 56.3 55.3 5.4 55.7 55.7 56.7 55.8 55.8 55.8 55.8 55.8 55.8 65.8 55.8 55.16E 80001 56.6 56.9 56.9 51.1 51.3 67.3 57.3 67.4 57.4 67 7.4' 575.4 5 7 .4 57 .4 57.4 57.4 63.5GE 70001 60.1 60.5 60.56 60. 60.8 60.8 60.8 60 .9 60. 67.9 60.9 60.9 60.9 f").9 60.9 bI.36E 60001 62. 2 62 .9 62.9 63.3 63.2 61.2 63.2 63.3 63.3 61.3 63.3 63.3 63. 3 . 3 b3.1 3.

6f 50001 68.8 69.8 69.8 69.4 70.1 10.1 70.1 70.2 70.2 70.3 70.3 70.3 70.3 70.3 70.3 70.4G1 46001 72.3 13.5 73.5 73.6 73.8 73.8 73.8 74.0 74.0 74.1 74.2 74.2 74.2 74.2 74.2 14.1

GE 40001 79.9 80.6 80.6 80.7 80.9 80.9 80.9 81.1 81.1 01.2 86.3 83.3 81. 1 81.3 81.3 83.4GE 36001 84.7 86.3 86.7 86.8 87.0 87.0 87.0 87.1 81.1 87.2 87.3 87.3 87.3 87.3 87.1 87.46E 30ol 89.9 92 . 92.0 92.1 92.4 92.4 92.4 92.5 92.5 92.6 92.7 92.7 92.7 92.7 92.1 92.A

GE 25UO| 91.3 93.9 94.0 94.i 94.3 94.3 94.3 94.4 94.4 94.5 94.6 94.6 94.7 94.7 94.7 94. 8611 20001 92.7 95.1 95.4 95.5 96.7 95.7 95.7 95.8 95.8 95.9 96.0 96.0 96.2 96.2 96.2 46.3GE 18U01 92.9 95.5 95.6 95.7 9569 95.9 95.9 96.0 96.0 96.1 96.2 96.2 96.4 96.4 96.4 9b.b6E 101 94.0 96.7 96.8 96. V 41.1 97.1 97.1 97.2 97.2 97.3 97. 4 97.4 97.6 97.6 97.b 97.76E 12001 94.5 97.4 97.5 97.6 97.8 97.8 97.8 98.0 98.0 98.1 98.2 98.2 98.4 98.4 98.4 98.,

.f 10001 94.9 98.0 98.1 98.2 98.4 98.4 98.4 98.5 98.5 98.6 98.7 98.7 98.9 9A.9 98.9 99.06E 9001 95.2 98. 2 98.3 98.4 98.6 98 6 9 98.7 98.7 98.8 94.9 98.9 99.1 99.1 99.1 99.2GE 8o 95.3 98.4 98.5 98.6 98.9 98.9 98.9 99.0 99.0 99.1 99.2 99.2 99.5 99.5 99.5 99.6CIE 001 95.3 98.4 98.5 98.7 99.0 99.0 99.0 99.3 99.3 99.2 99.4 99.4 99.6 99.6 99.6 99 .7611 6001 95.3 98.4 98.5 98.1 99.0 99.0 99.0 99.1 99.1 99.2 99.4 99.4 99.6 99.6 99.6 99.7

GE 6001 95.3 98.4 987 98. 9 99 .4 4 9 9.5 99 99.6 99.7 99.7 99.9 99.9 99.9 30.I

61 4o30 96.3 98.4 98.7 98.9 39.4 99.4 99.4 99.5 99.5 99.6 99.7 99.7 99.9 99.9 99.9 100.3uE 3U01 95.3 98.4 98.7 98.9 99.4 99 . 99.4 99.5 99.5 99.6 99.7 99.7 99. 99 99.9 Y9.9 133.3

611 2001 96.3 98.4 98.7 98.9 99.4 99.4 99.4 99.5 99.5 99.6 99.7 99.7 99.9 99.9 99.9 102.36I lUOI 95.3 98.4 98.7 98.? 99.4 99.4 99.. 99.5 99.5 99.6 99.; 99.71 999.9 9.9 V9.9 3(10.a

bE Ol 95.1 98.4 98.7 98.9 99.4 99.4 99.4 99.5 99.5 99.6 99.7 99.7 99.9 99.9 99.9 300.0..... ,................................... ..... .............................. .......... .......... .......... .... ...... ......

OTAL NUMBER OF OBERVAT1ON: 929

S

GLOBAL CLIMAIOLOGY BRANCH PEACENTAGI FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILIIYUSAFE TAC F OM HOURLY ObS RVAIIONS AIR WEATHFR SERVICEfMAC

STAION NUMBLR: 727855 STATION NAME: FAICHILD AFB WA PERIOD OF RECORD: 76-85

MONTH: MAY HOURStLSII: 1500-1700

CEILING RIS1IEITV'IN STATUTE MILES

IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE G E .cF1ET I I0 6 5 N 2 1/2 2 1 1/2 1 I1/ I 3/N 5/A 112 S/lb 1/4 0. . . . . . . . . . . . . .......... oo.o.o.°,.°°.............. ,,°°o.°°.° .....°o °o..... ° o o o °o o. , ° o ,o °.o. °,o°° ............°..............

NO CEIL I 43.0 4.1 4O. 40.2 40.3 N0.3 40.3 O.3 403 NO.3 40.3 O.3 40.3 NO.3 40. 4.3

LE zUOOO 5 53.0 53. I53.3 53. 536 536 53.6 53.6 53.6 51.6 53.6 51.6 53.6 S3.b 53.6 5s.bG( 160001 S.I SN.N S1 . 554 5 59 56 S4.6 S.6 54°b S.6 54.6 SN.6 54:6 546 S.6 54..6 54.6L [ 160001 5N.2 S. 54 .5 5N.6 N.? SN. SN.. S.? SN. S. SN.? SN.7 S.7 54.1 SN.7 5N.I.E 1OOI 55 .6 55.9 55.9 56.3 56.I 56.1 56.1 56.1 56. 56.1 56.1 56.1 5 .I Sb.I 56.I 5b.1

6C 12D001 57.5 57.9 58.1 5A.2 58.0 5A.3 58.3 58.3 58.1 58.3 58.3 s.1 58.3 58.3 58.3 56.3

6E 100001 61.3 61.6 61.9 62.2 6.2 62. 62.2 62.2 62.2 62.2 62.2 62.2 62.2 62.2 62.2 62.2GE 90001 63.7 6'.O 66.2 64.3 6b.5 69.5 6N.5 6N.5 69.5 6N.5 6N.5 64.5 64.5 6N.5 64.S 64.5GE Ao00 65.7 66.2 66.N 66.6 66.9 66.9 66.9 66.9 66.9 66. 66. 66.9 66. .9 66 .9 66.9 6b.9GE 70001 68.6 69.1 6 695 69.8 69.A 69.8 69.8 696 69.9 69.8 69.8 69.9 69.9 69.9 69.9GE 60UOI 71.1 71.5 7?. 7 73.3 7 3.3 7 1 71.3 70.3 7 3.3 731 73.3 73.3 73.4 73.9 4 .N 73.9

.,E 500D0 79.3 79. 80.0 80.3 80.6 80.6 AO.6 80.6 80.6 80.6 A0:6 80.6 80.8 80.8 :0.8 8O8GE SOOI 81. 9 2 83.1 83.N 83.N 81.N 83. 83.8 a .N A3.N 81.N 83.6 83.6 81.6 A3,6GE N000 A6.6 87,A 88.3 8 . .9 88.9 8a.9 88.9 88.9 88.9 a8.9 88.9 89 .1 89.1 891 89.1bE 15001 a9°8 912 91.6 91.9 92.2 92.2 92.2 92.2 92.2 92.2 92.2 92.5 92.5 92.5 92.5I.E 10001 93.1 94.7 95.2 95.5 95.8 95.6 95.8 95.8 95.8 95.8 95.8 9s.8 96.0 96.0 96.0 9b.0

GE 25001 99.2 95.9 96.3 96.7 97.0 97.0 97.0 97.0 97.0 97.0 97.0 97.0 97.2 91.2 97.2 91.2

GE ::OI 95.0 96.9 97.3 97. 99A.0 98.0 98.0 98.0 9.0 8.3 0 98.2 98.2 98.2 98.2GE 18001 95.3 97.1 97.6 98.) 98.3 98.3 98.3 98.3 983 9.1 98.1 98.3 98.5 98.5 98.5 9ASGE 15001 95.N 91.2 97.8 98.2 98.5 98.5 98.5 98.5 98. 98. 98. 9. 98.8 98. 98.9 98.9

G E 12001 95.9 97.8 98.5 9A.8 99.1 99. 91 99.2 99.1 99.1 99.1 99.1 99.1 995 99.5 99.6 99.b

GE 10001 95.9 93.8 98.5 98.8 99.1 99.1 99.1 99.1 99.1 99.1 99. 99.1 99.5 99,5 99.6 99.6GE 9001 95.9 97.8 98.S 98.8 99.1 99.1 99.: 99.1 99.1 99.1 991 99.1 99.5 99.5 99.6 99.6.E 8001 95.9 97.8 98.5 98.8 99.1 99.1 99.1 99.1 99.1 99.1 99. 99.1 99.6 99.6 99.? 99.?GE 7001 95.9 97.8 98.5 98.8 99.. 99.1 99.1 99.1 99.1 99.1 99.1 991 99.6 99.6 99.7 99.76E 6001 9 .9 97.8 98.5 96.8 99.1 99.1 99.1 99.1 99.1 99.1 99.1 99.1 99.8 99.8 99.9 99.9

GE 5001 9S.9 97.8 98.5 98.8 99.1 99.1 99.1 99.1 99.1 99.1 99.1 99.1 99.8 99.8 99.9 99.9GE NOOI 95.9 978 98:S 98.8 99.1 99.1 99.3 99.1 99.1 99.1 99.2 99.1 99.8 99.8 99.9 9.9GE SOI 95.9 97.8 98.5 98. 99.1 99. 1 99 9.3) 99 99 99.1 99 99 99.9 99.9

E E 2001 95.9 97.8 98.5 98.8 99.1 99.1 99.1 99.1 99.1 99.3 99.1 99.. 99.8 99.8 99.9 99.9.E 1001 95.9 97.8 9 98. 98.8 99.3 99.1 99.1 99.1 99.1 99.1 99.99. 99.8 99.9 2O.

I.E I 95.9 91.8 98.5 98.8 99.3 99.3 99.1 99.1 99.1 99.1 99.1 99.1 99.8 99.8 '9.9 o.3

....... ...... ... ,.... o . o......o...... o....o.... ..... ... °... ...... , °. °o..... •..... ...... ...... ...... ......


,=if

D.O8AL CLIMAIOLOGY NI4NCH P[RCENIAG[ FRE6uENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY161US AF ETAC FtOM HOURLY OBSERVATION5A 4 . A Hf14 SNv|CtlMhC

SIaTION NUMBER: 72185 5 1 STATION NA': FAIRCHILD AF8 WA PERIOD OF RECOR: 76-14

MONTH: MAY 5O R I: ,tl; I 4 .',

CE IL INL 'SITL V* IN STATUTE MILES|GL Gi S G f ( G E L G GE G[ G E GSSE SE k. t

FEE l I 0 5 4 1 2/2 1 112/ 1 1/4 1 3/4 5/8 1/2 51 1 1 1/....... . °o ...... ... ,,° ....... ,.......................°.... . o°..° .... * ......... .. °,°° ......................................

NO CL I L I 50.1 50.4 50.4 50.7 50.8 50.8 50.8 50.8 50.8 50.8 50.8 50.8 53.8 51. . 1 ,.b

SE 21000I 61.7 62. 4 62.5 62.7 62.9 629 62. 9 62 9 62.9 6 62.9 2.9 :2.9 .2:,.GE 180001 b.6 63.9 63.5 63.? 63.8 63.8 63.8 63.8 63.8 63.8 63.8 63. 61.8 63.4 >.

4E 1bO0 b3.3 64.I 6.2 64.4 64 4 64 . 64. 64.5 64.5 64.5 b4. 64.5 4.5 . .6f1 140o0 1 64.7 66. 6'. 6b.8 65S.9 6S.9 65.9 65.9 5.9 65.4 6..9 6S.9 5.9 1 ,.8 .4," .5

GE I Of6 6I.1 68.4 68.5 68.1 68.8 68.8 68. 8 68.8 b a. 6868.8 68.8 6 .8 .. 8 b..

SE 1uo00 13.7 75.1 75.2 7.4 75.6 75 .6 75.6 75.6 15.6 75.6 15.6 15.6 15.6 75.6 IS. 1,SE 9000 75.4 76.7 76.8 77.3 77.2 77.2 77.2 77.2.2 77.2 77.2 71.Z 1;.. .I.,

GE 80001 79.2 80.5 80.6 80.8 81.0 81.0 1.0 £1.0 81.0 £1.0 81.0 £1.0 81.0 81.j ,l.[ .:.

GE 700 87.7 84. £4. 4. 85 84.5 84. 845 6. 8.5 4. 8.5 4. . 4. ,,

GE 60001 83.8 85.1 85.2 £5.4 85.6 85.6 85.6 85.6 86.6 85.b 85.6 85.6 85.6 8.6 86.5 . ,.

bE 50001 87.7 89.3 89.4 89.8 90.0 90. 0 90 .0 90.0 90.0 90.0 90.0 90.0 411.0 I,.s 0 9' 11 "1GE 4500i 89.1 90.7 90.8 91.1 91.4 91. 9. 4 91.4 91° 91.4 91. 91.4 41.4 91 .4 1 ..4 .

SE 40001 91.1 92.9 93.0 93.8 93.6 93.6 93. 5.63.6 1436 93. 91.6 91.6 1.6 91.b 51.b 8.

GE 3001 91.9 94.1 94.2 94.6 94 .9 94 94.9 94.9 94.9 94.9 94.9 94.9 94.9 4.94 94.1 1.GE 30001 93.4 95.6 95.8 96.1 96.4 96.4 96.4 96.4 96.4 96.4 9b.4 96.4 96. 4 4b.9 46.4 b ..

S[ E 25001 94 96.7 97 97.8 97.4 97. 97.4 7.4 97.4 97.4 91.4 97.4 97.8 91l 47..SE 20001 94.1 96.7 96.9 91.3 97.6 97.6 97.6 91.6 97.6 97.6 97.6 97.6 87.6 91.6 47.6 1.46E 18001 94.1 96.7 96.9 97.3 97.6 91.6 97.6 97.6 97.6 97.6 87.6 97.6 97.6 91.6 47.6 g7.4,UE 15001 94.3 96.9 97.3 97.6 97. 9 97 9 9 7 9 97 97 9 97.9 97.9 97.9 97.9 47.v 97.9UE 1200£ 9%.3 91.2 97.5 97.8 98.1 98.1 98.1 98.1 98.1 98.1 98.1 98.1 98.1 98.1 414. I y .I

SE I0un 94.7 91.6 97.9 98.3 98.6 98.6 98.7 98.7 88.7 98.9 99.0 9 99.0 99.0 V9.0 5°.

SE 9001 94.7 97.6 97.9 98.3 98.6 96 9 98.7 98.7 18.7 98.9 99.0 99.0 99.0 99.0 99.0 44..(E 8001 94.8 97.7 98.1 98.6 98.9 98.9 99.0 49.0 99.0 9.2 99.3 99.3 99.8 99.1 5. 3 9.3SE 7001 94.8 918 98.3 98.1 99.0 99.0 99.1 99.1 99.1 99.3 99.5 99.5 99.5 99.5 49.5 9.5S[ 6501 94.8 97.8 98.3 98.7 99.0 99.0 99.1 99.1 99.1 99.3 99.5 99.5 99.5 99.5 49.5 94.5

SE 5301 95.0 98.0 98.5 98.9 99.99. 99.0 99.6 99.8 99.8 99.8 99.8 49.6 4,.GE 6401 95.0 98.0 98.5 98.9 99.2 99.0 99.: 99.3 99.1 99.6 99.8 99.8 99.8 99.6 Y9.8 9y,.GE 3001 95.0 98.0 98 98.8 9 9999.3 99.6 99.8 99.8 99.9 99.8 99.9 85.9SE O1 95.0 98.0 98.5 98.9 99.2 99.2 99.3 99. 99.3 9.6 99.8 99.8 100.0 g0.3 IO.3 £31.0GE 2501 95.0 98.0 98.6 9 8.9 99.2 99.2 99.3 99.3 99.3 99.b 99.8 99.8 100.0 100.0 100.0 13.s

bE O1 95.0 98.0 98.5 98.9 99.2 99.2 99.3 99.3 99.3 99.6 99.8 99.8 100.0 100.3 IUO.0 1au.0

.01 .. ... . . ....... .. 9... . . ... ..... ......

)OIAL NUMBER Of OBSERVATIONS: 918

i.IUvA CLIMAIOLos. 8RANCH 'ERCENIAGE E.EUENLY OF OLCURRENLE OF CEILING VFSuS w ISLHILIT YUSat rIAC FROM HOURLY OBSERVATION,A Iw .,[AyH78 R ilICE/MAC

0IAIION NUMBLR. 721855 STAIION NA4:. FAIRCHILD AFB WA PERIOD OF RECORD: 1b-d0

MONTH: MAY HOU U 08LS5: 2100-230J

f1|. 1ISIBILITY 2N SIAIIST MILESIN GL GE GE G5 GE GE GE GE f E GE GE GE GE fI GE E7 I 10 I / 22 1 1/ "2 1 1 /9 31 4 4 5/8 1/2 '1 b 1/4

....... •........... ,... .............. •................. .°..... ,...... .............. *oo...o ............. ... o, .......... .. .

NU CEIL I 09.6 60.2 6.2 6U.2? 60.2 60.2 60.2 63.2 60.2 60.2 60.3 60.3 60.5 6U.1 60.5 6J.3

b 200001 6? 6:8.3 68.3 68.1 68.3 66.3 65.3 68.3 68.3 68.3 68.: 68. 684 68.. 68.4 68.4L, 18000 69.2 68.1 68.7 b.7 , 68.7 8.1 68.? 8.7 68.7 68.8 8.8 .8 6. 68.8 68.3u, :b00 68.2 68. 68.? 68.? 68.7 68.7 68.1 68.? b8.7 68.1 8.8 68.8 68a 8 68.8 68.8 6b.bUt 195)0 69.6 7U.0 10.0 70.1 10.1 70.1 50., T0.1 10.1 70.1 70.5 70.3 10.5 3 0.3 0.5 70.107 120UO 11.5 72.i 72.2 12.2 12.5 72.3 72.s 72.3 72.3 72.1 12.8 72.4 12.4 72.4 72.4 72.4

GE 100001 56.2 7.8 77.4 77.9 77.6 77.0 77.6 71.6 77.6 17.5 177. 77.6 77.6 77.6 57.b 75.66E 9Ouo 8.5 17.0 99.0 74.0 79.6 74.6 79.6 79.6 79.6 79.6 79.7 79.7 79.? 79.7 59.7 79.7GE 80U0 82.6 85.8 8.6 85.7 65.4 83.9 85.9 83.9 83.9 83.9 84.0 84.0 84.0 84.0 84.0 80.GE ILuo 8..8 86.6 86.6 86.6 86.7 86.1 86.? 86.7 86.7 86.7 86. 8 8 8.8 86.8 86.8 a b.GE bOUO 81.5 88.8 88.8 88.8 88.9 86.9 88.9 8.9 88.9 88.9 9.0 89.0 89.0 84.0 89.0 9.0

GE 6sUO 40.2 91. 91.8 91.8I 91.9 91.4 92.0 92.0 92.0 92.0 92.| 92.1 92.1 92.1 42.2 42.1GE 4 6O0 92.0 93.0 97.0 95.i 9S.6 91.6 93.7 93.7 93.7 93.7 93.9 93.9 93.9 93.9 43.4 93.9GE 451111 97.0 94.4 91 1 .7 94.8 9.8 90 9a.0 15.0 9 .0 95.1 95.1 95.1 95.2 9 1. 95.1GE 5601 - 9.0 90.8 90. 9I.9 46.0 96.0 96.2 96.2 96.2 96.2 96.3 96.3 96.3 96.3 96.3 96.5

L. TlS I 4.9 9b.3 96.4 9.9 96.0 96.0 46.6 96.6 96.6 96.6 96.7 96.7 96.7 96.7 96.7 96.7

(J. 20O5 94.8 96.1 97.( 97.] .1 91 91.3 97.3 7. 93 97 97.8 914 97.4 97.8 914 91.47 20{101 96.2 9:.1 97.0 91.0 87.6 97. 9 477 971.7 917 91.7 97.8 97.8 a7.9 97.8 97.8 87.8(.7 I8U1) ..I 9.1 97.0 87.0 47.b 97.6 97.7 97.7 41.7 97.7 97. 97. 8 91 8 97.8 95.8 9.8

0 Is 1 l 9. 91 91. 9 . 7.1 9.7 97.8 91.8 I7.8 97.8 97.9 97.9 9 .9 1.9 17 45.4(,7 I200I 4%.7 9. 3 97.7 91.1 97.8 91.8 97.9 91.9 17.9 91.9 98.0 98.0 98.0 98.0 98.0 96.0

CIOGO 96.6 9 8. 8.0 98.1 98.1 98.2 98.2 98.2 98.2 198 98.8 98.9 9 . 4 8.4 96.40 1 9U1 00.6 97.6 98.0 98 1 98 9 98. 2 982 8. 2 9 9.9 98.4 98.8 98.4 98.4 98.4

,f * 8 4.6 97.6 18.1 8,1 98.2 98.2 98.8 88. 88.8 98.4 98.6 98.6 98.0 8.0 9.6 96.0"7 1 0 96.9 41.4 8.1 98.7 : 98.8 98.8 98.9 98.8 98.9 98.9 49.0 99.0 99.0 99.0 94.0 44.0LIT 1 00 9655 99.. 99.) 99.1 94.2 94.2 99.3 99.3 99.3 99.3 99.5 99.6 99.6 99.5 9 . 94.5

.1 U0 96.0 99. 99. 1 99. 99.2 9.2 99.5 3 99.3 99.3 99.8 99.8 99.8 44.8 94.8 99.8U# 900 96.0 98.2 99.1 99.1 99.2 99.2 99.3 99.3 99.3 99 99.8 99.8 99.8 4.8 99.8 "4.8U0 700 96.0 98.2 9.1 b 8 9 9 9 9 99.6 00.0 10.0 20.0 10.0 1 1Tun 200 96.0 98. 99.1 99.1 99.6 98.6 89.6 99.6 99.6 99.6 100.0 100.0 100.0 100.0 1o.. l1O.0

F I 00 "n1 96. 98.2 9 98 .1 99.1 9 9 9 99.5 99.6 99.6 99.6 99.6 100.0 101.0 100.0 Io.0 1U0.0 o0.0

, IE 01 96.0 98.2 99.1 99.1 99.5 99.5 9,.6 99.6 49.6 99.b 200.0 100.0 100.0 I00.0 100.0 IOU.0

............. . .................... :... ... . . . . . . . . . , o . .. . ... . . ... .. o. .... . ... :. ... : . ......... ,..

IOTAL NUMBER OF OBSERVATIONS- 91I

GLOBAL CLIMAiOLOGY 88AN RCL N7IG FWE UENCY Of OCCURPENLE OF CEILING VERSUV IS 181L1I7ulBELIAC F OM HOUPLY 06560PV IONA 1iR FEATHER GERVA(I/MAC

STATION NUMBR, 727855 S 1ATION NA4E: FAIRCHILO AF8 WA PLPIO0 OF REORD: 7Z-65

M9NTH: "Al HO US 11LII ALL

°..... ...°°. *°... ... °° .. ... ... ... °. .° *°°... ... . . ... ... .. ........ °................... °......................CE II.ING VISIBILITI IN STATUTE MILES

IN I 6E GE GE GE GE GE GE GE GE GE GE GE GE bE G E .fFI I If , 5 4 3 2 1/2 2 1 1/; 1 1 I /4 ,/8 s/? 9/It 1/4 j.... °...........,........................ ............ ........................................°...............................

NO CELIL I SO.4 50.8 50.h 50.9 51.0 51.1 5I.1 91.1 51.1 1. 1 91.1 S1.1 i.! 11.1111.1 9 1.

.E 200001 59.9 60.N 60.5 6.6 60a.7 60.7 b0.8 60.8 60.8 60.8 60.8 60. 60.8 t 6.A b[].8 bb.9GE I18ouo b1).4 60.9 61.0 61.1 61.2 61.3 b6.3 . 1 6 1 61.3 61.3 61.4 61.4 ol,4 61.4

GE b0001 60.6 61.1 61.2 61.2 b1.. 61.4 61.4 64.4 61.4 61.4 61.S 61.9 61.9 61.5 t1.5 61.6GE 14(301 31.9 62. b 6. 62.7 62.1 62.4 62.4 62.4 62.4 62.4 b. 4 9 2.4 b2.5 2.9 b?.5 62.1GE 120001 61.8 64.4 64.S 64.6 64.8 64.8 64.8 64.8 64.8 64.8 64.9 64.9 64.9 64.9 64.9 6b.1

GE 100001 68.2 68.9 b9.0 b9.2 69.4 69 4 b9.s 69.9 69.S 69.S 69.6 69.6 69.6 19.6 49,6 69.7GE 9000 1 69. 70.S 70.6 70.8 71.0 71 71.1 71.1 71.1 71.1 71.7 71 . 71.2 71.2 71.2 1.3G[ 800 73.1 73.4 740 74.2 74.5 74.5 74.5 74.b 74.6 74.7 74.7 74.7 79.8 74.8 74.8 74.8GE 7V00 76.2 17.1 77.2 77.4 77.7 77.7 77.7 77.8 77.8 77.8 77.9 77.9 78.0 78.0 78.0 78.1GE b0O0 78.0 79.0 79.1 79.3 79.S 79.b 79.6 79.7 19.7 79.7 79.a 79.8 79.9 79.9 79.9 79.9

GE 90001 81.9 83.0 81.2 83.8 83.6 83.6 83.7 81.7 83.7 83.9 83.9 81.9 84.0 89.0 .84. 84.uGE 4951 83.6 69 .9 85.1 85 5 S.9 85.6 8. 6 85 89.1 85.8 858 85.9 85.9 S.9 86.0GE 40001 80.2 81.8 88.1 88.2 88.4 88.9 88.1 88.6 88.6 88.7 88.8 88.8 88.9 88.9 88.9 89.0GE 3so01 88.2 90.0 .2 90. 90.7 90.1 90.8 9U.8 90.8 90.9 91.0 91.0 91 91.1 11.1 91.2GE 3o1 90.2 92.2 92.4 92.b 92.9 92.9 93.0 91.0 93.0 93. 1 93.0 91. 3 91.1 93.3 97.1 93.9

GE 25001 91.0 93.3 93.5 93.7 94.0 94.0 94. 94.1 94.1 94.2 94.4 94.4 94.4 99.4 99.4 94.9GE 2CDO 41.6 94.0 94.2 94.5 94.7 94.0 94.8 94.9 94.9 95.(1 99.1 95.1 95. 2 952 99.? 99.SGE 18UO1 91.7 94.1 94.4 94.6 94.9 94.9 94.9 9S.0 95.0 95.1 99.2 95.2 95.3 95.3 91. 95.4GE I00a1 92.1 94.7 95.0 95.2 95.5 95.5 95.6 9S.7 95.7 95.7 95.9 9S.9 9.0 9b.0 96.0 9b.1GE 12101 92.7 99.5 95.8 96.3 96. 3 9.3 96.4 96.9 96.9 96.5 96.7 96.7 96.8 96.8 96.8 9t.4

( O0O 91.1 96.0 96.4 96.b 96 96 96.9 97.0 971 97.1 91.2 97.3 97.4 97.5 97.5 97.9 97.9GE 90(I 91.2 95.2 96.9 96.7 97.0 93.1 97.2 97.2 97.2 97.3 97.5 97.5 97.6 97.6 91.6 47.7G( .00. 91.4 96.4 96.1 97.3 97.3 97.3 917.4 97.5 97.9 97.6 97.8 97.8 97.9 97.9 97.9 9 .2GE 7001 93.9 96.6 97.0 97.3 97.6 97.6 97.7 97.8 91.8 97.9 98.! 98.1 98.2 98.2 98.3 98.3GE cool 91.6 96.8 91.3 97.b 98.0 98.0 98.1 98.1 9a.1 98.3 98.9 98.9 98.6 98.6 y8.6 96.7

6[ Su01 9;.6 9 7

.: 97.5 97.8 98.3 B 98. 9. 98.9 98.9 48.6 94.9 98.9 4 99. ! bB, 99.1 99.1GE 4o1 93.7 971 97. 98.3 9 98 .7 988 98.8 99.0 99.? 99.2 99.4 99.4 99.4 99.GE 3001 93.7 97.2 97.7 98.1 98.6 98.7 98.B 99.0 99.0 99.1 99.4 99.4 99.6 99.6 99.6 99.7bE 2001 93.1 97.2 91.7 98.8 98.7 98.7 98.9 99.0 99.0 99.2 99.4 99.9 93.7 9Y.7 99.7 99.9GE 110 91.7 97.2 97.7 98.1 98.7 98.1 98.9 99.0 99.0 99.2 99.. 99.5 99.1 99.7 99.8 10 j,

IE 01 93.7 97.2 97.7 98.1 98.7 98.7 9A.9 99.0 99.0 99.Z 99.4 99.9 99.7 99.1 99.9 100.j°. .. ° . ° ..: ..:.. ° ° ...:. .. . °° ° . . . °...... 9°.° ° ...... . .,° , . ° ............................ ... ...°...

701AL NUMBER OF OBSERVATIONS: 7185

I

GLO AL CLIMAIOLOGY 814ANCH >I(IN T8 AGE FReuENCy OF OCLUPPLNLC OF CEILIN& G RSUS VISI 1ILIT YUSAFE TA0 EOM HOURLY 08 1 OR I0 r

t A8 1 W E A TH % N , I1C E / M 8 C

SI&ION NU668. 1866 6781109 48i: 781MCUI71 6 18.8 PERiOD UF OLLORD: 71-84MONTH: JUN HOUGSILSI I J000-02100

......... 1 ... .. ............................. INo STATUTE........ MIES ~ .. ..............................

CE IN 80 41I8XIL|T7 IN Sl~ITUL MILLS

IN I GE bE Gt GE GE G G 01 GE GE GE GE (I oL 1E GE 01FEEl I I 6 t S 7 21/1 2 iZ Il12 13/4 S/8 I/? S/1l 1/.... ,...........................•.............. ,.. , . ......... . . .. . ° ..... ,......................................,.............

NO LLIL 60.1 68.3 68.1 68.$ 68.3 68.3 68.3 68.3 68.3 b8.5 b.S 68.S 68.5 6 . 6B8.6 6b.5

E 2?000 12.3 . 72.6 1.6 7. : 2. 1 .6 72. 12.6 12. 1 76,7 :7 12.7 171 12.7 12.uE oun I 13.1 71.3 1.3 1. 7.6 .6 3 75 73 3.6 73.6 73.6 73.6 716 77.6 1 3.IGEbo n I.I .1 11 S. 1 .3 15. 1. S 71. ' .. .6 13.6 1.b 13.b 73. b IS.6 31. 13.6 3.b

fE icoa 1.7 71.9 17.0 14.3 ,.0 1l.0 74.0 147.0 74.0 7 4. 14. 14.2 74.2 Z. 7 . .1I.E OUO[7U1 7 2 9.4 76.4 76.6 766 7b 6 76.6 16.1 16.7 6.1 1.1 76.1 76.7 7

GE l1Ol :2. 8 2 :1. 8 8 8 .60 81.0 81.1 81.1 83.1 81.1 8.1 1 :1: : I.1GE 9000 6.6 84.4 84.4 86.3 86.0 86.0 85.0 8S.0 86.0 86.1 85.1 85.1 8, a,.1 8 8 .1GE 86001 88.1 88.3 88.1 fo 88.6 868.6 8 8.6 88. 88. 8. 8.6 88.5 88B.6 88.6 84.6 48.6 88.b

E I000 91.0 91.2 91.2 91.1 9I 9.1 . 91.3 91.9 11 41.4 91. 91.4 91. 4 91. 9.4 01..ff 61Dun0 91.S 91.8 91.6 91 1. 41.9 91.9 91.9 91.9 92. 92.0 9z.0 92 9.0 . 9.'.. 42.0

GE L OO11 92.1 92.4 9.4 9.5 92 .5 9 . 92.5 92.5 92.5 92.6 92.6 92.6 42.6 92.6 92.6 41.66f 4SU1 91.6 9.8 9.8 939 : 9.4 93.9 91. 99 319 934 9 40920 99 4. 9 0.0 94.0 94.DGIE 40001 94.t95 46 96.1 956.2 469.2 46.2 96. 46qS.z 9S . 96. S4 9s,. 4 96 .4 96 .4 96,.4 % 664 95.04.E 1SOO1 9.6 9 95.7 95.8 96.a 96.0 46.0 96 .0 96 46.1 96.1 9b.1 96.1 9b.1 96.1 46.16,1 OUO 96.4 9b.7 96.7 46.8 96.9 96.9 96.9 9b.9 9.9 97.0 97.0 91.0 97.0 91., 97.0 97.3

UE zsuo2 96. 96.9 96.9 9;.3 91.1 9.91 97 91 91 9 91 97. . 1.1 7. 7.GE 20001 06.9 97.3 41.3 97.9 91.6 97.6 91.6 91.6 47.6 41.6 91.6 97.6 97.1 91.6 97.6 07.6GE 18001 96.9 971 97.1 97.4 97.6 97.6 91.6 476 91.6 91.6 01.6 91.b 97.6 97.b 47.6 97..G 1u0 91 9 9 7 9 4 91.6 97.6 46 97.6 97.6 97. 97.1 1 9.1 91.7 9b ., .7

GE 12001 97.0 97.4 97.4 91.5 97.6 97.6 97.6 97.6 97.6 91.1 91.7 9.7 97.7 1 91 91.7

GE I oDi 97.1 91.6 9,.6 911 91.9 97. 9 9.9 91.9 41.9 98. 98. 0 98 . 98.3 0 .3 a 0v.0 .. aGE 910 47.1 47.6 47.6 97.7 91.9 97.9 97.9 91.9 41.9 98.0 98.0 98.0 98.3 9.0 9.0 o V.jI. 800 47.7 98.0 98.1 98.? 98.1 98.3 98.1 98.1 48.1 98.6 94.6 48.5 98.6 9. 5 08.6 9b.GE 7H{]| 91 98.1 98.6 98.6 98.7 98.1 98.1 98.1 96.3 98.8 98.8 98.8 48.9 94.8 98.a 9b.8IEl 6U0 I 7. 98. 6 98.78 98 9.9 9.9 9a.4 .9 98.9 99.0 99.0 99.0 94.0 9.0 y.0 9.0

7,L SOO1 91. 9.U 99. 99.5 99.6 99.6 99. 6 9 46 99.6 99 94.8 99.8 99.8 94.8 99.8 9.8GIE 8on 97.7 49.0 49. 90.6 99 946 99.6 99.6 99.6 99.8 99.8 49. 8 9 8 998 99.8GE 3Ufln 9;.1 99.0 99.4 99.6 94.6 996 9 9.6 99.6 99.6 99.8 99.8 99.8 99 .8 998 9.a 9.eG 2001 97.7 99.U 99.4 49.6 99.6 99.6 9.6 99 99.6 99.8 99.9 99.9 10.0 10.o0 1o0.0 0D1.0GE 1bO 91.7 99.U 99.4 99.5 99.6 99.6 99.6 99.6 99.6 99.8 99.9 99.9 100.. 1 00.a 1 00.0 10. 0

GE of 97.1 99.6 99. 999. 99.6 99.6 99.6 99.6 .6 99.8 99.4_99.9 10000 300.3 130.0 103.j........ •.... . . .. :.., .......... . . *. . .. . . . . . . ., ,. . . . . . . . . .. . . . . .. . ... . . . . . . . . . .

101AL NUMER Of 01R VAIION : 840

GL[ORRA CLIM83OLOuT BRANCH 'ERCENTAGE FR6EUINCY OF OCCUPLNLE OF CEILING VERSUS VISIBILITYlUSAFE C FROM HOURLY OS0EV8TI0NSA I R tE" IMIl G841(IC1/MAC

S IAIION NUMFLR: 72180 S1ATION NA4: FAIRCHILD AF9 WA PERIOG GF PECORD: 75 -b

MONTH: Jt1N 10UP iLSI) LI jUCI-O50u

*Ei ING ISIIL11Y IN STATUTE MILLSIN I 6, IE GE GE GE 1 G G GE G L 0 GA GE .4 GE .1

FEE. 1 In S 5 11 1 2 12 2 11 /2 1 1/4 I 1/4 S/8 I/? / ii 14 -

NO CEIL I bO.5 61.1 61.1 61.1 61.1 61 . 1 I.3 61.3 61 .1 1 . b. 6.3 61. .1 1.1 I. 1 I.I 61.6

bE mnOUfl 66.4 61.1 67.1 67.1 67.1 61.1 67.2 67.2 67.2 61.2, 67.2 67.2 61.2 61.2 ;1.2 b:.t..E 181001 66.7 67.6 67.6 1.4 67b.4 61.4 67.5 67.5 b7.5 61. 5 67.0 61.5 b7.0 E7.0 t7.0 61.3

1 1b0001l 6.0 61.1 61.1 61.7 61.1 61.7 67.8 67.8 67.8 61.8 67.8 61.8 67.6 67.b 67.8 08.2GE 1000 676.9 68.6 68.6 68.6 68.6 b68.b 8.1 68.7 68.1 68.7 68.1 68.1 68.1 6,.1 1 f, I .uf 12000) b9.9 70. b 0.6 10.4 70.6 70.6 70.7 70.7 1.7 70. 1 70.7 7 1. 7 7o.1 73.7 11.L

I[ 100001 76.3 16.8 76.9 1,. 76.9 76.9 7.0 17.0 77.0 77.0 77 .0 17.0 77. 1 11.0 77.Af 9001 [email protected] 1q.I 79.2 18.2 19.7 19.2 9.1 79 79.3 79.1 19.1 19.0 79.1 19.3 19.3 74.7ul 80001 80.6 86.4 86.1 Bb.7 86.7 86.1 86.8 Bb.8 86.8 a 6.8 86.8 86.8 86. 8 fb. t E. 8 71. 1GE 100111 8.4 89 . a 9.9 89. 4 89.4 89 .4 89.5 89.0 89.5 89.0 89.5 89.0 89.0 89.5 9.0 89.-A pOUO1 89.0 90.0 90.2 90.? 90. 90. 90.3 90.1 90.3 90 .5 90.5 90.5 90.0 90.0 90. 93.a

GE SO001 89.9 91. 91.1 91.1 913 91. 91.6 93.6 91. 91. 91.5 91.0 91.0 91.5 91.5 1.n03 4005 90.1 921 9 922 92.2 92.2 927 92.3 92 92.4 92.4 92.4 92. 924 9 2.4 92.8GE 401311 91.0o 92 .9 92.8 9 2.8 92 .8 9 2.61 9 29 42.9 92.9 95q.3 l3C 9 9. 43.0 90.3. 91.3 95.0 03.Gb 10 91.6 91.3 93.4 91. 9.7 91 93.8 90.8 93.8 93. 9.9 9 1.9 90.9 91.9 y1.9 96.3

3- 00u01 2.0 91.6 91.9 94. 94.1 I 6.1 96.1 94.1 94.1 96.9 96.4 964 96.6 9.9 94.4 94.7

W1 2205 92.2 91.9 94.4 94.4 94.6 99.b 94.7 94.7 94.7 94.8 99.9 99.8 914.8 99.4 96.8 9.2,E 0 L; 10 9 .1 94.7 -94. 94.9 94.9 95.1 05.3 90.1 95.2 95.2 95.2 90.2 90.2 90.2 95:4 I l"q 92.1 94.9 94.a 94.9 95.1 951 95.2 90.2 90.2 95.1 95. 95.1 95.1 95.3 90.1 9G.0

l tl, 92.8 94.8 95. 95. 4 95.0 95.0 95.6 95. 95.6 90.7 90.7 90.1 90.7 90.7 90.1 9t.1.E 1201 95.3 90.1 90.7 95.3 96.0 960 96.3 96 961 96.2 96.2 96 96 9. 9. 9.

GE 001 91.7 96.3 96.6 9u7 96.8 96.8 96.9 96.9 96.9 9- 96.2 97.0 91.0 91.1 97, 91.96[ 9001 30.1 96.3 96.6 9b.7 96.8 96.8 96.9 96.9 96.9 91.0 97.0 97.0 97.0 91.0 97.0 1.4

f1 003 91.1 96.1 96.8 96.3 97.0 91.0 97.3 91.1 97 9 97.2 97 97.2 91.2 91.2 91.2 47.6(E 72 94.1 91.9 9705 91,7 97.1 97.8 97.8 91.8 99 979 97.9 97.9 97.9 97.9 676.1Ia- 6130 99l,. 97.2 71 97.9 91.9 91.9 98.1 98.0 99.0 98.2 99.2 98.2 98.2 9u.2 99 .2 34.0

P0 on05 94. 6 9 8.1 9b. 99.0 98. 98.6 99.6 98.6 98.7 99,9 98.9 99.9 94.9 99.9 3v.-

I.E 401 4 . 6 91.8 99.6 98.7 99.9 98.9 99.0 99.0 99.0 99.j 99.2 99.2 99.2 99.2 99.2 94.0'.1 IjOl 946 97.. 98.7 99.3 99.2 9'.2 99.3 99.1 99. 99.9 99.2 99. 99.7 99.7 9,.1 3-5..E 200 96'6 978 98. 98.3 99.2 99.2 . 99.9.0 99.0 9 9.7 99.7 9971;.

4 t 131 94.6 97.8 98.? 98.4 99.2 99.2 99.3 99.3 99. 3 99)4 99.5 99. 9 99. 99.7 10 .0

.1 q1 99.6 97. 98.7 98.3 99 2 99 99.1 99.1 99.3 99 4 99.0 99 997 99.7 99.7 13J.J

I')VAL N119i 1 OF OSERVA4IONS: 870

pI

eIi .l ll / ll llnll ll[

3, L II LAIOLOG BRANCH 8(36(9'79 [ (t..oLNCY 0 ff OCURP LNL 1F 07]L1N9 V76SU6 VISI[6LI7'61'38I AC N OM ,OURL Y OdS(0RVA6T1NS

UA17 ;A l l T{ tAlk 6 ICE/MAC

SIAIION NU"87 721665 ITA I ION N1'i FA 188ChI9LD 8Fb WA PL91IO OF RE09. 19-66b4MONTH8 JUL rOJ,L S Il I 181-2JO

... ... ... ... .... . ... ... . ... ... ... ... ... ... ... ... ... ... .. ..... .............................................

IN [ 6[ 7 E GI 6L GL u . G OE r' L 6 [ G E G tfLL! I 13 6 3 2 2 112 1 I" 1 9 ,4 112 1/lU 119

No CLII It 172.13 2.3 12. 12. 1 .. 1 12.3 12.1 72.S 72.5 72.3 72.3 72.3 72. 72.3 72. 721.5

i 2301.I1 19.8 81.3 80.3 0.3 80.1 813.3 68.3 80 813.3 8f.3 113.1 83.1 8do.3 8.3 10.3 Bo.ILI 061(00 80 02 0.:6 60.6 1 81. 89.6 11 80... 6(, 60.6 0.1, 601 an . 60.6bg:, 53 , jt 110.. B. 60. 90.6 16130 2.9. 8. 2. . 3.2.9. 61.2 8.. 81.3 1.3 .3 1 3. Y 81.S 8.9 81.3 81.3 a1.3 62.S. 110130 8d.6 82.9 g2.9 82.9 11.9 82.9 62.9 62.9 82.9 82.9 62.9 82.9 62.9 62.9 92.9 62.9E 12 00 1 16. 1 F6.1 66.1 7 6.1 66. 7 8 6 . 86.1 86.1 86.7 86.17, 6.1 86. 1 6 .7 9b.7

I*. LUcooI 19.2 79.6 89.9 89.9 90.0 9.L 90.0 913.0 903.0 go0 90.0 90,. 90.0 913.0 911.01 9b.O.t 90ouI 91.6 92.1 92.9 92.9 92.. 92. 92.6 92 92.6 92. 92.6 99.6 ? 92.6 92.6 92.6 92.b

oo 1113607 92.9 93.5 91.1 93.1 93.8 9.6 91.8 93.8 93.8 93.6 91J. 8 93.It Il{ I .2 9 93 9. ° * J 99.7 9 .1 9. 99.1 99., 94.1 94.1 91.1 94.1 9.1 9'.I 9.1

1. 613Ui{} 94.9 96.5 96.1 99.7 96.6 96.6 96.8 9.8 95.8 95.6 66.8 95.6 95.8 96.6 96.6 96.,

Ut[ .0137 9 6.6 91.! 91.1 97.3 97.6 97.6 97.6 91.6 91.6 91.6 91.6 91.6 91. 91.6 91.6 91.b4,7 9 6n07 96b 91. 91. 9.S 9T.6 9. 9.1, 93.6 9l.6 93.3 93.3 93.3 91. 97.7 1.7 97.1

(.7 90(7 971 96.2 98.9l 96.9 98.6 98.6 98.6 98.6 98.6 96.1 98.7~ 99.7 98.7 96.7 96.1 91.1It 307 l1.6 98.3 98.6 96.6 91 . 9 9 b 1 96. 98. 98.8 96.6 98.8 9b.6 98.6 91t.7 70(107 91.6 98. 98.1 96.7 996.6 98.6 96.9 98. 9 98 98.9 9.9 98 .9 9b.9

L, 2617 91.1 9b . 68 98 . 98.9 96 .9 9.89 96.9 98.9 99.1 99.0 99. 93.0 99.0 99.0 99.VUt 1(07 37.1 96.6 9 96.9 98.9 96.9 96.9 96.9 96.9 99.13 99.0 99.3 96.0 9.1. 99.0 99.3L1 16UOI 91.1 96.6 96.8 96. 98.9 96.9 98.9 98 9 .9 99.0 99. 99.0 9.1 9.13 99. 0 99.361 1tu17 91.7 98.6 98.8 96.9 98.9 98.9 96.9 98.9 98.9 99.0 99.0 99.3 99. 96.0 99.9b 99.0(.7 126137 91.6 99.13 99. 99.2 99.1 99.3 99.1 99.7 99.1 99.9 99.4 99.9 99.. 99... 99.9 911.)

(,7 113-07 97.8 99.9 99. 9.5 998 99.8 99.8 99.6 99.8 99.9 99.9 99.9 99.9 9.9 9.91,1 9617 91.77 9.~o6 99.6 99.8 99.9 99.9 99.9 99.9 99.9 I130. 10. 10.0 109.0 1130.0 I 100.0

L7 860 97.8 99.0 99.6 96.3 99.9 99.1 9999.9 O1.13 9130.1 100. 991) 10.3 1131.0 903.4A 1013I 97.8 99.6 99.8 99.9 99.9 99.9 99.9 99.9 99.9 9130. 100. 0 1 13.0} 1100 :9 1. 1 l 0y.

9L 61107 91.8 99.6 9.8 99.6 99. 9 99.9 99.9 99.9 99.9 1O0. 1130.0 11313.13 100.[00 . 71U'1.O 13!.0

Ut I ({] 9 7. 8 99.6 99. 8 99.6 99.9 99.9 Y9.9 99.9 99.9 100.0 1 00. 0 100.0 11D.1D 110.3 U 6(1.Do 103.U1,7 91,07 97.6 99.b 99.8 99.9 99.9 99.9 99.9 99.9 99.9 110.0 1113.a 100U.O1 10.03 1 100. (0 .0 100.3*i6 U1l,0 97.8 99.6 99.8 99.8 99.9 99.9 99.9 99.9 99.9 00.3 1 00.0 110.0 10 . 11.0 0 .13 19.3

" 4 207 97.8 99.6 99.6 99.8 99.9 99.9 9 99 99.9 99.9 103.1 700.0 103.0 109.3 10.30 0 10.0 1a90.31 t3N1 97. 8 99.6 99.6 99,8 99.9 99.9 99. 9 99. 99.9 1 no.a 100.0 1o0.0 a 10 .0 0 (113.0 1(113.0 1 i.

t. 207 971.8 99.6 99. 999.9 9.9 99.9 99.9 00. 0 10.0 10 0.0 : 00.0 1 1O 0 :1 ( .0 : 1.13

OTL NuMR9 Of 08SRVATIONS: 9J2

S

_ .l -l I

UIJdA CLIMAOLO BRANCH tRC18 rA03 f fWE"(9Y( Of Pf5 f CE I LING VCtWSoS V PI& IfV

" 'A' I'a FROM HOURLY 0BSERVATIO S

A3d .(ATHIW t RVICE/MAC

IA IION NUMBER 727855 SIAIION NAKt: FAIRCHIL D Af WA PLP10 OF PkCORU: 75-b4

M343: JuL 1O0uSLSIi: 10- 1 7 f3

..............~~~ ......

..... ,........ . .............................. .. ..... . .. .. .. .. .

LIt I 8313I8I IN M181016 91115

IN I C, E GE GE GE GE E 6 E G Gf G [ GO Ut (I "I

F t I 10 b 3 1 1 1! 2 112 1 /q 1 S/4 i/b 1/2 S/lu I /9 ,1

NO C[It I 67.5 t8.U 68.U 68.J 68.0 bA.0 68.0 b8.0 8.0 68.1U 68.0 68.0 68.1 . t.u j 8.3 6t.j

26 a 11.5 78.0 78.1 .:1 18.0 16.0 787.0 8.0 S.: 19.0 18.0 7.0 18.0 . . I 7.]

I6 8000n 78.S 78.9 78.9 18.8 78.9 78.9 18.9 78.9 18.9 18.9 18.9 78.9 78.9 18.9 (8.9 19.9

b OODI la.6 19.0 29.0 19.3 19.0 79.0 79.0 19.0 19.0 19.0 19.0 79.0 79.3 79.0 19.3 1.s.

GE I4O0 19.5 79.9 19. 9 79. 79.9 79. 9 1 9.9 19.9 1 9 7 9.9 19.9 7 9.9 79.9 19.4u, 120001 82.8 SI.? 83.2 83.2 83.2 83.2 83.2 83.2 83.2 83.2 57.2 83.2 85.2 81.2 97.2 92.2

CA 10U0o 85.7 86.62 86.2 8b2 86.2 86.2 86.2 86.2 86.2 Sb2 86: 86.2 86.2 86.2 :1 .2 8L.2

ofr 9001 86.6 87.1 87.1 87.1 87.1 81.1 87.3 81.3 87.1 87.1 87.1 87.1 87.1 87.1 7.1 7.1

b o 8000 88.2 88.3 887 88 .7 88-I 88.7 88. 88.1 88. 7 88 88.1 88.1 88.1 88.1 9A.1of 10uh 89.5 90.1 90.1 90.1 90.1 0.1 90,.1 90., 90.1 1 90.1 90.1 90.1 9O1. 90.1 93.

t 6000 93.1 91.8 91.8 93., 91.8 91.8 91.8 93.8 91.8 93.8 91.8 91.b 91.8 91.8 91.8 91.8

L.8 f 0001 91.8 94.5 99.5 94.5 94.5 9. 5 94 5 94 5 94 5 94 5 98 . 9.5 94.5 94.5 99.5 949

, 45002 95.0 96 .0 6 96.0 96.3 96.0 96. 03 96 9.0 96.0 96.0 96.0 9b.D 96.0 96.3 b.O 9,0

"f 801,1 96.9 97.6 97.6 9 :7.6 97.6 97.6 97.6 91.6 97.6 97.6 97:6 97.6 97., 91.6 97.b 91.6

*f 3Suo 9 7*6 98.4 98.'. 99. 98,9 98.9 98.4 98.4 98.9 98.4 98.8 98.4 98.4 98.4 98.4 98.4

G $o Ul 98.2 99.U 99.0 99.3 990 99.0 99. 99. 99.0 99.U 99.0 99.U 99.0 99.0 99.0 99.3

, 25101 94.2 99.0 99.0 99 9 99.0 99.01 90.0 99.0 99.0 99.0 99.0 99.0 99.U 99.0 94.0

Lf 20001 98.3 99.1 99. 99. 99 .1 99. 99.3 99.3 99.1 99 99 99.1 99.3 99.1 99.1 94.1

01 138002 98.7 99 99.1 99.1 99. 9.1 99.1 99.3 99.1 99.1 99.3 99.1 99.1 99.1 99.1 99.106 35Isu 98.5 99.4 99.9 99 99.4 99.4 99.4 99.8 99.8 99.4 99.8 99.8 99.4 99.9 99.4 99.4

o" 12003 98.7 99.1 99.1 991 99.7 99.1 99.7 89.1 99.7 99.7 99.1 99.7 99.7 99.7 99.7 99.I

It 1000 99.1 99./ 99.7' 99.7 99.1 99.7 99.1 99.1 99.7 99.7 99.7 99.1 99.1 99./ 99.1 99.71 o 90O 9.7 99 99.8 99.8 99.8 99 99 99.8 8 99 99.8 99.8 99.8 99.8 99.8 99.9 99.9 99.

1,0 8U) 98.7 99.8 99.8 99.8 99.8 99.8 99.8 99.8 99.8 99.8 99.8 99.8 99.8 99.8 49.8 89.8

07 100 99.7 99.8 99.9 300J.3 I30.0 0.0 300.0 300.0 33J0.0 100.0 1 0.0 100.0 300.0 I o 0. IU00.0 0 1 1] .3a.1| 600 98.7 99.8 89. 9 3U.3 I3o.0 300 . LO0.0 10a. 0 10 .0 300.0 100.0 100.0 100.U I1on.0 1U.3

GE 502 98.1 99.8 99.9 Io-o 300.0 100.0 300.U 30 O 00.0 100.0 300.0 300.0 3 00.0 300.0 100.06 403 99.1 99.8 99.9 100.3 000. 300.0 300.0 300.0 300.0 10.0 3 00.0 1000 .0 300.0 100.0 100.3Lt 10 99.7 99.8 99.9 300.3 300.0 300.0 300.0 300.0 300.0 300.0 300.0 00.0 0370 10.7 330.0 13o3

63 2O, 99.1 99.8 99.9 300.3 1 |0. 300. 100.0 3 300.0 300.0 3 00.01 3o0.0 300.3 10 0.0 I (0.0 130.3i

Of loll 99.1 99.8 99.9 300.3 300.0 30. U3000 300 30.0 100.o 0 .0 100.0 100 0 10.0 OO.0 10 3.

Of 0 49.7 99.8 99.9 300. 100.0 100.0 10.U0 100.0 3U.0 100.0 300. nn0 ) 330 3U0 3 U00 3OU 0... ............. ...... ...... ....... ...... ...... ..... . ....... o ...... ...... ...... ...... ...... ...... ...... ...... ......

I37AL NUMBER OF OBSERVATIONS: 930

6

bLObAL CLIMAIOL06Y BRANCH 1LECtN A1 FRE.UENCY OF UCCUPALNLE OF CEILIN( VERSUS VISIBitIIT yUSAF E AC FROM HOURLY ObSERVA1ION S0 AIR "EATIHER SERVICL/MAC

SATION NUM8L8= 727855 STATION NfiL: FAIRCHILD AFS WA PEPIOG OF -EC8R: 10'.MONTH. JUL HOURSILSI3; 12UO-140

CE IL 1.4 V3I8ILITY IN SlSTUIE MILLS

3N 9 GE G[ GE GE GE GE GE [ GL (,E GE GE L E GE IFEEl | 30 6 S 2 1 2i2 2 1 /2 / 1/ 3 A 3/N 5/8 1/2 #lI. 1/4 1

.......... ..... °......... ......... =........ ..... ............... ..............,.................................................

NO CElL I b4.6 64.8 65.1 65.1 65.1 65.1 65.1 65.1 6S.1 6S.1 65.1 65.1 65.1 b.1 . I. bS.1

bE 0000| 1.9 74. 74.0 1N 74.4 74.l4 77.N 7 4.4 74.4 7.. 1.4.4 7N.4 14.4 7. 4 1 4. 1. :GE 18000, 1 . 7 4 14 79 14.9 75.1 10.1 15.I 75.1 75.) 75.1 75.3 71 15.1 75.1 15.1 S0.IGE 1600 1 74.5 74.7 74.9 74.4 T5.1 75. .55. 15. 75.11 5 5 75.1 15.GE 140001 15.3 75.5 715.7 75.7 5.8 15.8 75.8 75.8 15.8 15.B 7S.8 15.8 15.8 7.8 0.8 715.b

OI00 18.1 78.4 78.6 78.b 78.7 18o. 18.7 18.7 1 18.1 8.1 78.7 18.1 18.7 78.1 18.7 76.1

GE 00 81.1 82. 82.6 82.2 82.1 82.1 : 8 .1 .7 8 .1 . 81 82.2 82.1 2 2.1 82.1GE 90001 82.1 81.3 83.5 83.5 83. 8.1 8. 7 83.7 87.1 83. 83.7 83.7 63.16E 80009 85.4 860 86.2 86.2 86.3 86. 3 86 3 86.1 86.3 86.3 86.1 86.3 88.3 86.3 8b.1 86.3E 70001 86.9 87.5 87.7 . 1.1 81.8 87.8 87.8 87.8 81.8 . 87. 7.8 81.8 87.8 87.8 81.8 87.8GE 6000 87.7 88.5 88.1 88.1 88.8 88.8 88.8 88.8 88.8 88.8 8.8 88.8 88.8 880 .8 .8 0. 8

GE 500 91.1 9z.1 92.4 92.. 92.5 92.5 92.S 92.5 92.5 92.5 92.5 92.5 92.5 92.S 92.0 42.5GE 4SUO 91.l 93.9 94.2 94.2 9. 94.3 94.3 94.3 94.3 94.3 94.3 94.3 94.3 94.3 44.3 94.4G.L 90009 94.5 95.3 95.6 95.b 95.1 451 95.1 95.7 95. 7 95.1 95.1 95.7 95.7 95.7 95.1 95.1GE 3Sa0u 95.4 96.2 96.6 9b.b 96.1 9b.1 96.7 96.1 96.7 96.1 96.7 96.7 96.7 96.1 46.7 9..LGE 30001 95.7 96.8 91.1 97.z 97.3 91.3 97.3 91.1 97.3 91.3 97.3 91.3 91.3 9.3 97.3 97.3

GE 25U09 96.1 91.4 91.1 47.8 98.0 9.0 98.0 48. 0 9 U 98.0 98.0 48. 0 9 80 8 09 98.0 98.0GE 20009 971 98.2 98. 98.6 98.7 97 9 8.7 98.1 98.1 98.7 98.7 98.7 98.7 98.1 98.7 98.7GE 1809 91.1 48.4 9817 98.8 48.9 98.9 98.9 98.9 98.4 48.9 48.9 98.9 48 9 48.9 98.9 98.9GE 15001 97.6 98.1 99..0 99. 99. 99.2 99.2 99.2 99.2 99.2 99.2 99.2 49.2 49.2 49.2 99.2UE 12009 97.1 98.8 99.1 99.2 99.4 94.4 44.4 99.4 99.4 99.4 99.4 99. 99.4 99.4 9.4 99.4

GE 00 97.8 98.4 99.2 9.4 99.5 99.5 99.5 99 5 99 5 49.5 99.5 99.5 99,S 99.5 965GE 901 98.0 99.0 49.4 99.S 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.bGE 8009 98.0 99.3 99.5 94.b 99.8 94.8 49.8 99.8 94.8 99.8 99.8 99.8 99.8 94.8 94.8 988GE 7001 98.1 99.2 94.6 94.1 99.9 94.9 99.9 .9 9.9 99.9 99.9 9 99.9 99.9 9.9 44.9GE 6001 98.2 99.. 99.7 99. 300.0 100.0 100.0 1o.0 100.0 00.0 1010.0 0. 9.0 10D0 I00.0 30.DJ

A[ 5339 98.2 99.9 44.1 99.8 100.0 300.0 110.0 100.0 300.0 100.0 300.0 100 3O 0.0U 03 .0 I11.0 I33.0.1F 409 99.2 99.4 99.1 99.8 3000 300.0O 0. 100.0 100.0IO° 300.0 100.0 300.0 300.0 30.0 100..] 303..GI 3009 48.2 99.4 99.1 99.8 300.0 100.0 300.0 100.0 300.0 300.0 100.0 300.0 30.0 303.3 300.0 L33..E 2009 98.2 99.4 99.1 99.8 .100. O 00.030.0 100.8 100.0 300.0 0o.0 300.0 300.0 100.0 I0.O0 13.GE I.O0 98.2 09.4 99.1 99. 300.0 3O0.0 100.0 00.0 30 0.0 300.a 3O0.0 100. 0 0 00.0 33.0 337.0 I0J.0

GE 09 98.2 99.4 99.1 99.8 100.0 3011.0 100.0 100.0 100.0 300.3 00 .0 100.0 100.0 300.0 , 0.0 10 ...

., . . . . . . . . . . . . ............... . .... . ..... ..:... . ..... . .. ...... . ... . .. . . . . ....... . ...... . .


S

L BAL CLIMOLObY 8RANCH PERCENTAGE FWEUUNCV Of OCCUU8LN C( 07 11L1, WERSUS VISIbIL IT rUSAFITC ROM HOURLY OaS1847ION4

t AIR .1A7918 47881C1/M8C

A NUM3[R 10 6u8 $: 727A I If)% N41 % A1 fIR4UHILD A1T bA p"I0b 27 Rt'OuR: 7b4

MONT : Jth HOURS(L Sh 3901 -1IdU

CIII 140 IShll IN STATUTE MILES"1N I GE G Ut L U, t Li Lk Lit L I. GE Lit (i Gt .1

FEE1 I IU 6 4 3 2 112 11/2 1 1 I 1)4 4/6 12 516I 1/4

NO CEIL I b8.7 68.7 68.8 68.8 69.1 6Y.1 b9. 6Y.1 69.1 69.1 L9.1 69.1 69.1 b.! &9.1 64.1

ut .'Dooo 11.4~ 71.4 73.7 71.7 74.0 74.1] 74.0 74.0 74.0 79.0 74.0 ,4.Q 74.0 .0 74.0 74.GE 180001 1.8 1.9 74.0 74.1 74.1 74.3 74. .3 74.1 74.1 74.1 74.1 74.1 7.3 74.3 74.1

LiE 10001 74.1 74.2 714.1 74.1 74.6 74.6 74.6 74.6 74. 74.6 74.6 74.6 74.6 74.6 74.6 74.bbLi 14001 74 74. 77. 74.6 75.9 74.9 74.9 75.9 15.4 7.4 74. .9 74.9 1.9 74.46! 120.00ut1 8 0.1 80U. 2 80.13 AU.! 80 .6 80 .6 80.6 80.6 6 0 .6 80.6 80.6. 80.6 60.6 81 6.6 8Ob a0.b

Ut moCUoS 89.2 84.1 84.9 84.4 84.7 84.7 4.7 8 4.7 4.1 84.7 64.7 84.7 84.7 84.7 64.7 84.71 90UO 84.9 86.0 86.1 86.1 86.5 8t.4 86.4 86.4 6.4 86.4 86.4 86.4 86.4 8b.5 16.4 8b.5Li 80001 8.9 89.0 89.1 84.1 89.4 89.4 89.4 89.5 89.4 89.4 89.4 89.4 1.4 89. 9.5 s4y.

' t 100 90.0 90.1 90.2 92.2 .5 90. 0.4 904 9. 90.4 4.4b y1 4.4S 90.4 0.1 90. 4.4 5 vO0.4S 9 4.4u bo 90.6 90.8 90.9 90.6 91.2 91.2 91.2 91.2 91.z 91.2 91.2 91.2 91.2 91.2 91.2 ?112

Lt COS 91.8 91.Sc9o 92 92.2 92.4 92.4 92.4 92.4 92.9 9z.4 9.4 92.4 42.. 92.4 42.4 '.:(A 44.,0 42.0 92.2 92.1 92. 4 2.7 9.. 9 7 9 92.1 9.7 42.7 92.7 2.7 42.7 4.6E 40U0 91.0 91.1 93.2 9s.1 93.7 93.7 91. 9.7 1 9 37 97 9 93.7 4.71 9. 93.1 97.1Lit 1 0 9.0 99.1 99.4 94.4 94.8 94. 99.8 9.9.8 9.8 9.8 99.8 44.6 4.8 98.4Li 1L005 94.6 95.1 94.2 94.! 95.9& .6 9S.6 94.6 94.6 94.6 94.6 94.6 96 9. 1. .

S2405 44.2 94.6 94.7 94.8 46.1 96.1 96.! 9.1 96.! ] 14.1 96. 96.1 41.1 4,. 7.1L! 20051 94.9 98.1 96.4 96.0 96.9 96.9 97 97 97.0 97.0 97.1 97.0 97.0 47.0 97.2 47.0 47.2LE 18001 96 .0 96.4 96 96.7 97. 97.0 97.1 97.1 1 971 97.1 971 1 7. 1 97 1 1 1Li 1405 97.0 91. 91.1 9 1. 98.I 98.1 98.2 9 .2 98.2 98.2 98.2 98.2 99.2 cc.2 49.2 96.2(I 120 97.7 98.1 98.4 98 .9 9b.9 99.0 94.0 99.0 99.0 99.0 99.0 9. 4 .U 40g 9.

I, giO 98.0 98.7 98.8 98., 99.4 99.9 99.5 99.5 99.5 99.5 99.4 99.4 99.4 44.4 99.4 94.4Yi ButS 98.4 99.7 98.6 98.9 99.4 99 995 99.5 99 5 99 . 99.4 99 99.5 99.5 99.4 9 .4

(1 01 90. 98 9:89 99V.i 99 . 99°b 9 9. 99 . 99 .7 99°.1 99 .7 9,. 1 99 . 1 99 .71 1 9 . 7 19.Tg*7 1E. u Ul 9 8. 1 95.8 9 M.,1 99.j vq .b 99 .b 9 9.; 99. 7 99 .1 9 9 .1 99.I,1 99. , 99.,7 91,. 1 99.,7 9 o

Gt 501 9.0 0.9 9.| 9.q 99,9 99°9 IO. 0 O, IT. 0 OIU.O 0 .too .UO. IOU. ag~

bE '4' L' 0 9 :0 9, 99,I 9 9. 9 9 9 9 9 9 UO~OO ]o0,g '0 | 00 0" IlO0. IOOof a 10. 80 ]0 I 0 o" onU" | ,ouU

G 3 3001 98.0 98.9 99.1 94.4 99.9 99.9 1o00 100. 10oo0 100.0 100.0 100.0 100.0 100. 0 100.0 I.j6 f ' or)1 8 98. 9 99. 1 99.4 99 .9 9 9.9 1 00.O0 IOUo . |100 . 0 to. 0 10 O . o u IO .O U 03 .0 1 ] 0O ]U 0.O Ia3.

G I IgO 90 11.0 98.9 99. 1 99 .4 99 .9 9 9.9 1 0 0. Ion . 10 b. a I on. U I on .0 0 .OUg IOa.O 0 IO. 01 .O 1 1.1

61 IT 9 8. 1 98.9 99.1 9. 9. 99 9 tooO IOUO UO.o IfU on . IOU. I100 0- IOU . IUU D-I0i 0

o..o . ., . °............ ,............. °.... 99:.°qo .... Y9:9....: ...... ...... ........ ........ . . . . . . . . . . . . .

OT 0 NMB1R OF OBSERVATIONS: 910

I I

DOAL CIIMAIOLO¥Y BRANCH /1RCiNIA8[ FRJULY Of OCCURRENCE OF C(ILING wERSUS VISIBILITYUSAFETAC FROM HOURLY OBS RWATI0NSAIR WEATHER SERVIC /MAC

STATION NUMBLR: 121855 SIAIION NAIE; FAIRCHILD AFD WA PERIOD OF RLCORD: 75-8MONTH; JUL HOURSILSII: 0600-09J0

IN I G E G E G f[ G I G f GI GE G u fi Gi GIFEl 1 10 5 4 1 1 11/2 2 1 112 I 1Z 9 I I/ 4 18 /12 9/1b 1/9 Uo. .. o.... , ..... .. o... .................. oo.... oo...o .................... ..... o.............................................

NO CEIL I 68.5 68.5 68.5 68.9 b8.d 68.9 b8.9 68.9 68.9 68.9 09.1 69.1 b9.1 b.1 69.1 b9.1

Di 20000 1 1.8 71. 9 71. 71.9 72. 72.9 72.9 72.9 12.9 72. 72.6 72.6 12. 72. 72.6 2.6Di 180003 72.1 72.9 2.9 72.9 72.7 12.8 72.8 12.8 72.8 7?.8 73.0 1.0 71.0 71.0 73.0 136

LE o 16000 72.9 72.6 72.6 7 .b 72.9 71.0 71.0 1.0 11.0 73.0 73.2 13.2 73.2 70.2 71.2 13.2bE 19O00 19.1 79.2 79.2 79.2 74.5 79. 749.6 79.b 79.6

79.b I.8 74.8 79.8 79.8 79.R 74.8

GE 120001 80.1 80.2 80.2 8 0. Z 0.9 80. 80.6 80. 80.6 80.6 80.9 B0.9 80.9 80.9 80.9 aRJ.9

. :00001 89.9 89. 89.45 89. : 98 89.9 4:.9 9.9 8. 9 89 85.2 8S.? 85.2 85.2 85.2 8.26E 90003 86.6 86.7 86.7 86.7 87.0 87.1 87.1 81.1 87.1 81 81 1 87.3 871 1 3 8 731 87.3D[ 80003 90.1 90.0 90.3 90. 9 0. 90.8 90.8 90.8 91.0 91.0 91.0 91.0 91.0 91.0D[ 70001 11.8 92.1 92.3 92.3 92.6 92.7 92.7 92.7 92.7 92.7 92.9 92.9 9 92.9 y2.9 92.9GE 60001 92.7 93.1 93.1 93.1 93.9 93.5 93.9 93.5 91.5 91.9 91.8 9'.8 91.8 91.3 93.8 93.8

6 50003 93.7 99 2 99 99.2 99.s 99.b 99.6 99.6 99. 99 9 99.8 99.8 99.8 99.8 9.8DC 99003 91.8 99.3 99.0 99.3 99.6 89.7 9.1 99.7 99.7 99.7 9 99.9 99.9 99.9 99.9 94.9GE 90001 9 99.0 99.9 9.9. 99.8 94.9 99. 9 9 999 99.9 99.2 99.4 99.2 99.z 99.2 95.2GE 35903 99.3 99.8 99.8 99.8 99. 99. 93 9 99.1 95.3 99.1 95.9 99.9 99. 95.5 v9.9 95Di 30001 99.8 99.9 99.6 99.8 99.9 96.0 96.0 96.0 96.0 96.0 96.2 96.2 96.2 96.2 96.2 96.?

G[ zsU0 99.9 99.6 95.1 99.1 9b.U 96.1 96.1 96.1 96.1 96.1 96.3 96.3 98.1 9b.1 96.3 96.3

Ui 20 99.9 99.8 99.9 9 9. 96.2 96.3 96.1 96.1 96.1 96.1 96.6 96.b 9b.6 96.6 . 6.6Di 18003 99.9 99.8 99.9 99.8 96.Z 96.1 96.3 96.3 96.0 96.1 96.6 96.6 96.6 9b.b 86.6 96.6GE 19003 992 96.0 96.1 96.1 96.9 96.6 96 96.6 96.6 96.6 96.8 96.8 96 9b6 96.8 96 .UC I UOl 99.9 96.9 97.0 97.0 97.1 97.9 97.9 97.9 97.9 97.. 97.6 97.6 97.6 97.6 976 91.6

E 10000 96.1 97.2 971 9. 97.7 97.8 97.8 9. 98. 98. 1 9.1 8. 88.D[ 900 96.2 97.9 97.6 97.7 98.1 98.2 98.2 98. 998.2 98.2 98.9 9 9 98.9 98.9 98.9 98.9

D[ 8003 96.6 98.0 98.1 98.2 98.9 98.6 98.6 98.6 98.6 98.6 98.8 98.8 98.8 98.8 99.8 98.8.i 7003 96.8 98.9 98.9 98.6 98.9 99.0 99.0 99.0 99.0 99.0 99.2 99.2 99.2 99.2 99.2 99.2

Di E 001 96.9 98.9 98.6 98.7 99.0 99.1 99.1 99.2 99.2 99.2 99.9 99.9 99.9 99.9 99.9 99.1

Di g0n 97.0 98.6 98.7 98.8 99.1 99.2 99.9 99.6 99.6 99,6 99.8 99.8 99.8 99.8 99.8 99.86E 9001 97.0 98.6 98.7 98.8 99.1 99.2 99.9 99.6 99.6 99.6 99.8 99.8 99.8 99.8 99.8 9 .8

i 110 1 97.0 98.6 98.7 98.8 99.1 99.2 99.9 99.6 99.6 99.6 99.8 99.8 99.8 99.8 99.9 99.9Di 2003 9.g0 98.6 98.7 98.8 99. 1 99.2 99.9 99. 99. 99. 99. 99.8 599.8 99.9 09.bi I00 1 97:0 98.6 98.7 98.8 99 99.2 99 . 99.6 996 99.6 99.8 99.8 99.8 99.8 99.9 1 b(U.

6i 3 97.0 98.6 98.7 9t.5 99.1 99.2 99.5 99.6 99.6 99.6 99.8 99.8 99.8 99.8 99.9 991.9

... ......... ..o..,.. .° .... . .. .. o...o .. ° . . . . . . ° . o . . .° . o . . ° 0 . . . o . . ........ . . . . ... o

IOIAL NUMBER OF OBSERVATIONS: 950

.

GLOBAL CLIMAIOLOGY BWANCH 1ICLNIAGE f REULNCY OF OCCUR8ENL OF FILING VERSUS VISIBILITYUSAFI AC F 10 HOURLY OSSERVAIONSg A8 .EACHE8 S[IVIC[IMAC

STATION NUM8ER: 721805 STATION NAIE: FAIRCHILD AFB WA PERIOD OF RLCDRD: 75-844041": JUL OURSILSTI: 01U0-0500

... .... . .....o ,.o ., .. ... ... ... ... ... ... ... , .,. ... .. ... o ... .. .... . ......... ...........................CEIL INS VISIBILITY IN STATUTE MILLS

IN I GL. L G 1 GT GL GE SL bE G U [ G GE G 51U GL GEFEET I I o 5 4 1 2 1/2 2 1 1/2 l 1/4 1 31/4 5/ 1/2 S /IN 1/N............................................... .,oo. ..... .. o... .... ,... ........ . ,....................... ..................

NO C IL I 69.4 69.5 b9.b 6 9.b 69.9 69.9 70.0 10.k 70.1 70.1 70.2 70.2 70.1 70.3 10.4 70.4

bE 20O001 ;4.9 15. 10.S l.l 1;: ;5:1 15 . 7:. 1. 7 170.1 1:b 70.6 75.8 71.8 15.9 (0.GE 180001 74.9 70.0 (0.1 70.1 10.1 50. ( 0. 15.0 70.0 75.0 70.6 75.b 70. 8 7. 5.9 70.8G E :C000l (0.1 (0.4 10. 7. 5.8 75.8 75.9 76.0 76.0 76.0 16.1 76.1 6.2 76 .2 7b.3 lb.1

GE 14ool 76.0 7,. 76.8 t7.d (7.0 77.0 7.1 71.? 17.2 77.2 77.1 77.1 77.4 77.4 .5 , .E 12,0001 82.1 8 .2.0 81.5 82.8 8.8 82.9 8.0 83.0 83.0 80.1 81.1 83.2 83.2 81.1 83.3

..E 10001 87.1 87.2 81.3 87.8 87.0 81.7 87.7 81.8 81.8 87.8 817. 87.9 88.0 88:0 88.1 88.1G 40001 89.0 89. 89.2 9. .4 4 9 9. 84 89 89.8 84.9 89.9 40.0 90 .3

GE 8ODO 90.0 90.7 90. 90. 91.0 91.0 91.1 91.2 91.2 91.2 9;.1 91.3 91. . 9. 91.0E (70001 92.0 992.8 91.0 43.0 91.1 93.2 9.2 93.2 9.3 91.3 98.4 93. .41.0 9.5

GE 6JUDI 94.2 9.0 94.4 94.4 94.7 94.7 94.8 94.9 94.9 94.4 95.0 90.0 90.1 1 0.1 9.2 90.2

GE ODGOI 9.2 95.3 9S4 9.4 95. 7 97 95.8 9. 9 90.9 95.9 96.a 96.0 9.| 9 8.| 96.2 9b.2GE 4501 40.8 9 0 9.0 46.0 96.2 96.2 96.1 96.4 96.4 96.4 96.6 96.6 9b.7 96.1 9b.8 9b.8

GE 40011 9.3 96.4 96.6 96. 98 968 9 6 97.U 91. 97.U 97.1 97.1 91 .2 919.2 47. 97.GE 0000| 96.4 9b. 96.7 90.7 46.9 46.9 97.0 91.1 7.1 97.1 97. 97 7. 91.1 97.. 91.4GE 101 46.7 91.0 47.2 9. 97.4 97.6 7 7.7 97.1 97.8 97.8 47.9 97.9 48.0 48.3

GE 1D001 96.9 91.6 97. 91. 98.0 91. 97.1 9F.1 98.7 97.2 97.1 97.3 98.4 98.4 98.6 98.6GE 20601 96.8 91.9 9.0 47.3 97.6 97.:6 977 91 9 98 97.4 97. 9 980 98. 98 94.1GE 8001 98 91.1 91.6 47.6 48 98 97.9 98.0 48.0 48.0 94.1 48.1 48.2 98.2 98.1 48.1

GE 1 0-00 46.9 91.7 97.9 97.8 98.1 98.1 98.2 48.1 48.1 98.1 48.4 98.4 98.6 98.6 98.7 98.1

GE 12G1 46.9 91.9 98.1 98.1 48.3 98.3 98.9 98.6898.6 98.6 98.7 9 8.8 98.8 48.4 94.4

GE 10001 96.9 91.4 98. 98.2 48.4 98.4 98.6 98.1 8.7 98.7 98.9 98.8 48.9 98.9 9.0 99.0uE 9U01 47.0 98.0 98.3 98.3 98.6 98.6 98.1 98.8 48.8 98.8 98.9 8.. 94.0 99.0 94.1 9.1

GE 8001 97.0 98.0 98.1 98.1 48.6 98.6 98.7 98.8 98.8 48.8 98.9 98.9 94.0 99.0 44.1 99.|GI aloo 96.2 98.2 98.6 98.6 98.8 94.8 98.9 99.0 49. 0 9. 9 99.| 99.2 99.2 94.3 9b.1

1E 6201 91.4 98.6 98.4 98.9 99.1 941 9.2 99.1 49.1 94.3 99.4 99.9 99.6 94.6 99.7 9b.1

GE 7UO 47.9 98.6 98.4 98.8 99.1 99| 49.2 9. .1 99.19 49.9 9.99. 6 a 9. 9.E 0001 9.6 98.8 99.1 99.1 49. 94.3 99.4 99.6 99.6 99.6 99.7 99.7 99.8 94.8 99.9 94.4

GE uo! 97.6 98.9 99.1 99.1 9.1 99.3 99.4 99.6 99. 9 9.6 99.1 99.7 99.8 99.8 54.9 100.0GE 8 O1 97.6 98.8 99.1 99.1 99.1 94.3 99.4 99.6 99.6 99.6 49.7 99.7 99.8 99.8 94.9 100.0GE 1601 91.6 98.8 99.1 9.99 999. 94.3 99.99.6 49.7 9.7 94.8 8 49.9 09.9

GE I1 91.6 98.8 9.1 99.1 9.1 99.1 99.4 49.6 99.6 99.6 99.1 99.7 99.8 99.8 99.9 100.0

o........o......o.....o.. .... o ... :.... ..9:.....o..o..o... ... ... ...... .o... ... ...... ...... ... ... ...... ...... ...... .......

iOTAL NUHR R Of OROSERVATIONS: 819

S

GLOd AL C[MAOLOO 1RANCH i (IN I AGI 1L NC V Of CLURPL NCL OF L[[L[ING VF[RSJS VIS181LIIYU UIA lAC fOK -IOUPLY 08SRVAIIONS

tAIR u[83TH11 0184101/87.

TAT3ION NUMBF R; 32185 S |AION N0 3 f I R C HIL0 AF8 A P 0RIO0 OF RLCORU: 75-84

ONTH : JUL HOURSILSII: 000-0]

.... ... , . ... ... ... ... ... ... ... .... ... ... ... ... ... .. .. ... *, ... .* * .. .................... .. ..... ......IL 6 1, u1 61 .1 bt L. 6 1, 1 01 E1 G I1 G1 E1 0E 6E GE GHEf1 10 6 1 1 /2 2 112 1 1 Y9 1 3/ 4 5/8 1/2 S5/36 1/9 U

40 C1I I 11.9 3R.2 78.1 S 1 1 3.6 3r a.b 38.6 78.6 18.6b 78.6 78.6 78.6 78.6 79.6 78.6 1 .6

,., ,OOO| 81. 83.6 8a.3 8.8 81. 81.9 83.9 81.9 83.9 1.9 81.9 1.9 81.9 83.9 63.9 83.9

6f 18U01 8.2 81.6 8. 8I.1 81.4 13.9 83.9 81 .9 a .9 81.9 81.9 61.9 61.9 81.9 81.9 81.9Gf 160001 83.2 83.6 81.3 83.8 81. . 81.9 83.9 81.9 83.9 81.9 8.9 81.9 89 83.9 81.9

Of I90001 11z.5 82.6 82.9 81.3 83.2 83.2 81.2 81.2 83.2 81.2 83.2 83.? 81.2 83.2 61., 81.2u. I 0Ou 8b.5 86.9 87.0 171 91.2 81.1 81.2 87 8.2 81.2 8?. 87.2 87.2 87 .2 17. .2 1 13.I

(,1 100001 92.2 92.5 92.6 , I 92.9 92.9 91.0 93. 43.0 9Y.0 9S. 0 93.0 93.0 91.0 93.0 93.093 9000 93.1 90.9 93.5 90.3 91.8 93.8 91.9 91.9 93.9 93.9 93.9 93.9 91.9 93.9 93.9 91.9Of 80001 94.5 94.8 94.9 95. 95.2 95.2 95.3 95.9 95.9 95. 95.4 95. 5 5. 95. 95.9Of 7c101 96.0 96.3 96.9 96.5 96.3 96.1 96.8 9G.0 93.0 93.0 93.0 97.0 97.0 93.0 97.0 91.0

1.E bO0 96.7 97.5 97.6 97.1 93.8 91.8 97.9 98.2 98.? 98.2 98.2 98.2 98.2 98.2 V8.2 9b.2

oL GO0 97.0 97.P 97.9 98.. 98.2 98.2 98.3 8 98 98.5 98.5 98.5 98.5 98.5 98.5 v8.5 98.5E 95001 97.1 97. 98.0 98.2 98.1 98.3 9.4 98.6 6.6 98.6 98.6 98.6 98.6 98.6 9.6 98bC 9000 97.2 98.2 98.3 98.4 98.5 96.5 9. . 8 8.8 8 9.8 98.8 98.8 9.8 98.8

01 5001 97.. 98.3 98.9 9., 98.6 9.6 98.3 99.1 99.0 99.0 99.0 99.0 99.o 99.3 99.0 9.3oE 3000 97.6 98.5 98.6 98.1 98.8 9b.8 99.0 99.2 99.2 99.2 99.2 99.2 99.? 99.2 99 . 99.2

01 25Ufl 93.6 98.5 98.6 91.7 98.8 b 99.0 9. 99.2 99.z 99.2 99 99. 99.2 99.2 9.2M1 2o 97.6 98.3 98.8 99.3 99.3 99.3 99.2 99.. 99.4 99. 9999.9 99. 99.4 990 18001 97.6 98.7 98.8 99. 99.3 993 99.2 99 99. 99.Of 15001 97.6 98.7 98.9 99.] 99.3 99.3 99.2 99.9 99.9 99.499. 99.4 99.9 99.9 99.9 96.9

1. 32001 93.6 98.8 99.0 99.3 99.2 99.2 99.3 99.5 99.5 99.5 99.5 99.5 99.5 99.5 99.5 99.5

bE 10001 97.7 99.0 99 1 99.2 99.3 99.0 99.8 99.3 99.3 99.3 99.7 99.7 99.3 99.1 99.3 99.3I, 9001 93.3 99.0 99.1 99.2 99.1 99.3 99.9 99.7 99.3 99.7 .99. 9 99 99. 99.3 49.4

9 8001 93.3 99.1 99.2 99.1 99 99. 9 99 99. 99.8 99.8 99.8 99.8 99.8 94.8b3 I0O 97.3 99.3 99.2 99.3 99. 99.9 9 9. 98 99.8 99.8 9. 9.8 9.03 hOfl 97.3 99.3 99.2 99.1 99.9 99.9 99.5 99.81 99.8 99.8 99.8 99.8 99. 99.8 99.8 99.1

Of T0O 9.3 99.2 99. 99. 99.5 99 99 99.: 99 99 99 999 99. 9 99 9:. 99.9 99.9 49953 8001 93.8 99. 99. 9 99 99.7 99.8 300.0 10 0.0 300.0 100.0 310.0 300.0 10.0 300.313 1001 93.8 99.0 99.. 99.5 99.3 99.7 99.8 300.0 100.0 300.0 300.0 100.0 303.0 30.. 300.0 0.b.0

I3 2001 97.8 99.3 99.. 99.5 99.7 99.3 99.8 100.0 300.0 900.0 100.0 300.0 03.0 100.0 Vo0

.0 39.3Of 101 97.8 99.0 99.9 99.5 99.3 99.3 99.8 300.0 900.0 300.0 100.0 300.0 303.0 100.0 300.0 30.

1f 01 91.9 99.3 99.1. 99.5 99.3 99.7 99.8 300.0 I0O.O 300.0 300.0 100.0 100.0 30.3 3 U00.0 31.]

............ .. ... o. ,o..... ...... .. ,.... . ..... ...... ...... ..... ...... ...... ...... . ............ , ..... =. ...... ...... ,

303AL NUMBER OF 08S88V310NS: 88

3

GLOBAL CLIMATOLOGY BRANCH -tRCENTAGE FREOULNLY Of OCCURRENCE OF CEILING VERSUS VISIBILITYUSAFETAC FROM HOURLY 0SLRVATIONSAIR dEATHE R SEA ICE MAC

A IIO0 NUMBER: 127855 SIAIION NAME: FAIRCHILO AFB WA PERIO0 OF RECORD: 15-64MONTH: JUN HOURSILSI I ALL

.. .. . ... .. ... o... . o.... . . ... , ... .. ,,... .. *. .. . *.. .. .,.... .. o.... ..... ......... ..........*...............

CE IEI160 RISIBILITY 1N STATUTE MILESIN I GE GE GE GE GEL GE GE GE GL GI GE GE GE C SGL :

FEET I l 6 5 6 2112 1 112 1 1/4 3/4 5/B 1/2 S/I I/N 0

NO LE IL 1 59.1 59.4 59.5 59.5S 59.5 99.5 59.5 59.5 59.5 59.6 59.6 59.6 59.b 59. 6 59.6 59.7

GE 200UO 1 66.3 66.7 66.8 66.8 66.9 66.9 66.9 66.9 66.9 66.9 66.9 6b69 67.0 67.0 67.0 11GE :8000 bb.8 67.2 67.2 67.0 67.3 7 7.9 67.67. 67. 67.4 b. 67.4 61.5 67.5 67.5GE 160001 b.0 67.4 67.9 67.5 67.5 61.6 67. 6 6 76 6 6 6 67.6 67.6 67.7 61.7 7.? b.1GE 190001 67.8 68.2 68.3 68.3 68. 68 6 .8.9 68.9 8.9 68.6 68.5 68.5 68.a5 66. 68.5 bA.bGE 120001 71.1 71.6 71.5 71.5 7. 1171.6 71.6 71.6 71.6 71.7 71.7 71.7 71.T 71.7 11.7 7.

GE 100001 75.9 76.1 16.0 76. 76. 76.5 76.5 76.5 5 76 76.5 76.5 76.5 76.6 76.6 76.6 76.6GE 90001 77.9 78.2 7.3 78. 78. 78. 78.5 78.5 78.6 18.5 185 78.5 78.5 78.6 78.6 t7.bGE 80001 8l.1 82.1 82.2 82.2 82.3 82.8 82.5 82.9 82.9 A2.9 82.9 82.6 82.4 82.5 2.5 82.5GE 70001 AN.0 86.9 86.5 8.6 84.6 86.7 89.7 89.7 B7 86.7 AN.7 89.7 .5. 89.A 96.9 86.9GE 6000| 95.6 85.6 85.9 86.a 86.0 86.1 86.2 86.1 .6.1 86.2 86.2 86.2 86.2 86.2 86.2 86.1

GE 50001 87.6 88.2 88.3 A8.6 88.5 88.5 88.6 88.6 88.6 88.6 88.1 88.7 88.7 A.T AA.7 86.8GE 45001 88.7 89.6 89.5 89.6 89.7 89.7 89.8 89.8 89.8 89.8 89.9 89.9 89.9 89.9 89.9 90.0GE 40001 91.0 91.8 92.0 92.21 92.3 92.3 92.9 92.1 92.3 9Z.4 92.6 92.9 97.6 92.S 92.S 97.5GE 35001 9.1 93.U 91.2 90.3 93.6 93.6 93.7 90.7 90.7 93.8 90.8 93.8 93.8 91.8 93.8 93.9GE 30001 93.5 9,.5 99.8 96.9 95.1 95.2 95.2 95.2 95.2 95.0 95.3 95.3 95.3 95.6 95.6 95.9

GE 25001 99.I 95.2 95. 95.6 95.8 95.9 95.9 95.9 95.9 96.0 96.0 96.0 96.0 96.0 96.0 96.1GE ?000 99.6 95.6 95.9 96.0 96.3 96.3 96.3 96.9 96.9 96.6 96 965 96.5 96.5 96.5 9b.6GE 18001 99.6 95.7 96.0 96.2 96.3 96.6 96.6 96.6 96.6 96.5 96.5 96.5 966.6 96.6 9b.6 96.6G 15001 99.8 96.2 96.5 96.6 96.9 96.9 96.9 97.0 97.0 97.1 97.1 97.1 97.2 97.1 97.1 97.2

GE 12001 95.2 96.7 97.0 97.1 97.9 97.5 97.5 97.5 97.5 97 .6 97.6 6 97.6 97.7 97.7 91.7

GE 1000 95.6 97.3 97.6 97.8 98.1 98.1 98.2 98.2 98.7 9A.O 98.3 98.1 98.0 98.9 98.9 9b..GE 9001 95.6 97.6 97.7 97.9 98.2 98.2 98.2 98. 9898.6 98.6 98.6 98.6 98.5

GE 81W0 95.7 97.7 98.0 98.2 98.6 9 8.6 98.7 98.7 98.8 98. 9 98. 9 98.8 98.9GE 7001 95.8 97. 9 98.2 98.9 98.8 98.8 98.9 98.9 98.9 99.U 99.0 99.0 99.0 99.1 99.1 99.1GE 6UO1 95.9 98.1 98.6 98.6 99.0 99.1 99.1 99.1 99.1 99.2 99.3 99.3 99.3 99.3 99.3 99.4

GE 5001 96.0 98.3 98.7 99.3 99.6 99.5 99.5 99.5 99.5 99.6 99.7 99.7 99.7 99.7 99.7 99.8GE 9001 96.0 98.1 98.8 99.1 99.5 99.5 99.6 99.6 99.6 99.7 99.7 99.7 99.8 99.8 99.8 99.9.E TOi 96.0 98.3 98.8 99.1 99.6 99.6 99.7 99.7 99.7 99.8 99.8 99.8 99.9 99.9 99.9 100.0GE 002 96. 0 98.3 98.8 99.1 99.6 99.6 99.7 99.7 99.1 99. 99.9 99.9 99.9 99.9 99.9 IO0.36L 001 96.0 98.3 98.8 99.1 99.6 99.6 99.7 99.7 99.7 99.8 99.9 99.9 99.9 99.9 99.9 1o.0

GE 01 96.0 98.3 98.8 99.1 99.6 99.6 99.7 99. 99.7 99.8 99.9 99.9 99.9 99.9 99.9 100.U.*........ .. ,. ... ..o .. .. .. .... o° , . ... o....... . oo ..... .. ... . ., . .. .o......°. ...... .... ...

iOTAL NUMBER OF OBSERRATIONS,: 1016

S

GLOBAL CLIMAIOLOGV BRANCH PERCENIAGE FREQUENCY OF OCCURPLNCE OF CEILIN6 AEWSUS VISIBILITIUSAFETAC FROM HOURLY OBSLRVA7IONSAI1 AIHER R. CL/MAC

S AT1ON NUMBER: 72786 5T1ATON NAIL: FAIRCHILD AFB WA PERIOD OF RACOAU: 75-d

MONTH: JUN OURSILS|I: 2IdO-sUd,o. ... ..o.. oo ..o . ........ .. . =... .. ... . ... .. ... .o = . ... °. . ...... . . .......................................

CE IL 1NG BSIBILI37 IN SCAIU7L MILLS

IN IGE GE GE GE GE GE bL GE IE (i GL GE GL L IT uFEET I 10 6 6 4 3 2 72 2 1 /4 1 3/4 6/B 1/2 6/10 7/9

......... •........... . .. o..... , ..........o........ ,. . ,.. ... . ..... ........... ... .................................. ,....

NO CElL I 68.7 68.8 68.8 68.8 68.8 b8.8 68.8 68.8 b8.6 69.G 69.0 69.0 69.3 69.0 69.0 bv.u

GE 20000| 73.3 73.4 71.4 71.4 73.9 73.4 73.4 1.4 71.4 73.7 73.7 71.7 73.7 7,1. I7.7 77.1GE 180001 73.5 73.7 73.7 73.7 71.7 73.7 73.7 73.7 1.7 73.9 73.9 71.4 13.9 71.9 17.9 73.4bE lOi0 73. S 73.7 73.7 73.7 713.7 73.4 70. 77 7 13.7 173.9 73.9 73.4 13.9 71.9 1..9 73.GE 140001 74.3 74.4 74 4 744 74.4 74.4 74.4 74. 1 74.4 4.b 174.6 7.b 1,6 14.6 74.6 74..GE 120001 77.4 77. 77.5 77.5 77.5 77.5 77.5 77.5 7.5 77.7 77.7 77.1 77.I 77., 17.1 11.1

GE 100001 82.7 82.8 82.8 82.8 82. 8 82.8 8 .8 82.8 83.7 83.7 81.1 81 81.1 81.1 A1.IGE 90001 85.6 85.7 86.7 86.7 85.7 85.7 85.7 85.7 86.7 86.9 85.9 8.9 86.9 86.9 86.9 85.9GE 80001 88.1 88.2 88.2 88.2 88.2 88.2 88.2 88.2 88.2 86.4 88.4 88.9 88.4 88.9 .8.a 88.4GE 70001 90.3 90.5 90.5 90.5 90.5 90.5 90.s 90.5 90.5 9!.7 90.7 90.7 90.7 90.7 90.7 9.7GE 60001 91.7 91.9 91.9 91.9 91.9 91.9 91.9 91.9 91.9 92.1 92.1 92.1 92.1 92.7 42.. 92.7

GE 5000i 92.5 92.7 92.7 92.1 92.7 92.7 92.7 92.7 92.7 93.0 90.0 93.0 91.0 93.0 93.0 4 .3GE 9500 93.1 93.3 93.3 93.3 93.3 93.3 93.3 93.1 91 3 93.6 97.6 93.6 93.6 93.6 97.b 9.6GE 4010 94.8 96.4 954 96.4 96.4 6.4 96.4 95.4 96.4 95. 96 96.7 96.7 95.7 .7 96.7GE 35001 96.6 96.2 96.2 96.2 96.2 9.2 96. 2 96.2 96.2 96.6 96.6 96.5 96.6 9b. 96.6 96.6

GE 3000 1 96.4 97 . 97.1 97.1 97.1 97.1 97.1 97.1 91.1 97.5 97.5 97.5 97.5 97.6 97.6 97.6

GE 26U0 96.8 97.5 97.5 97.5 97.5 97.5 97.6 97.6 97.6 97.9 97.9 97.9 97.9 97.9 97.9 97.9DL 20001 97.0 98.0 98.0 98.2 98.0 98.0 98.0 98.0 98.0 98.6 98.6 98.6 98.6 98.6 98.5 98.6G 18001 97.0 98.0 98.0 98.2 98.0 98.0 98.0 98.0 98.0 98.5 98.6 98.5 98.5 9 .5 98.6 98.6GE 15001 97.4 98.5 98.5 98.5 98.5 98.5 98.5 98.5 98.5 98.9 98.9 98.9 98.9 98.9 98.9 98.9GE 12UOI 97.4 98.5 98.5 98.5 98.5 98.5 98.5 98.5 98.6 98.9 98.9 98.9 98.9 98.- 98.9 98.4

GE 10001 97.5 98.6 98.7 98.7 98.7 98.79 8.. 9,9 98.7 99 .2 99.2 9-.2 99.2 99.2GE 9001 97.5 98.7 98.8 98.8 98.8 98.8 98.8 98.8 98.8 99.1 99.3 99.3 99.3 99.3 99.7 94.3GE 8001 97.6 98.7 98.8 98.8 98.8 98.8 98.8 8 8 99.1 99. 99. $ 93 9 9. V97 9vGE 7001 97.6 98.8 98.9 98.9 98.9 98.9 98.9 98.9 98.9 99.9 99.4 994 99.4 99.4 94.4 99.9GE 6001 97.6 98.9 99.0 99.2 99.0 99 99.0 99.0 99.0 99.6 99.6 99.6 99. 99.6 99. 49.6

GE 6G01 97.7 99.2 99.6 99.) 99.6 99.6 99.6 99.6 99.6 00.0 100.0 700.0 700.0 100.0 IuO.0 120.9GE 6001 97.7 99.2 99.6 99.6 99.6 99.6 99.6 99 99.6 700.0 700.0 100.0 100.0 700.3 900.0 13.GE 3001 97.1 99.2 99.6 99.6 99.5 99.5 99.6 99.6 99.5 100.0 700.0 100.0 100.0 100.0 IUO. 100.0GE 2001 97.7 99.2 99.5 99.5 99.5 99.6 99.5 99.5 99.5 700.0 100.0 700.0 700.0 170.0 00.0 10U.2

GE T00l 97.7 99.2 99.5 99.6 99.6 99.5 99.5 99.5 995 00.0 00.0 00.0 1 100.0 13.3

GE 11 97.7 99.2 99.5 99.6 99.6 99.5 99.5 99.5 99.5 100.0 100.0 700.0 701.0 3O:.3 700.0 73,0...... ................. .. .. ........ . .... .......... ... .....89..o.... .. ......

TOTAL NUMBER OF OBSERVATIONS- 839

ULOdAL CLIAIOLOUY BRANCH 'ERCENlAGE FREQUENCY Of OCCU9RQNLE O CE6LN VfkSUS VISIBILITYUSAF(3AC FHOM HOURLY O09SIVATIONS9 83I WEATHIER S1VICE/8AC

STAILON NUMBER: 21855 STATION NA3: FAIRCHILD A8 WA PERI0 Of 7ECO6U: FS-64MONTH: JUN HOPSILSI: 18U0-2J03

IA I GE Lf L( r, t Ut[ E It It It U G Gt I 0 2t 31 t k LtF[[I 10 6 5 4 1? /1 2 Il 1 / 1 1 1/ 1 I.l S/ I 1 k/|1 1 /4 a

•... .... ...................... *....... ......... .. ............. ..... .. .............. .. ............o....................... .....

N0 CE11t I 58.S 68.5 58.6 58.9 59.0 69.0 59.0 69.0 59.0 59.0 59.1 S9.1 59.1 5.1 5 9.1 09.1

GE 200001 68 b8.U 68. 6 68.6 b8.6 68.6 6 . 68.6 b b. . 68.7 66.7 68.7 8.7GU 18000 69.0 69.0 69.9 69.6 60.6 69.6 69.6 69.6 69.6 69.6 69.7 69.? 69.1 19. 19*1 6.*LI 16000 69.6 69.6 70.0 T0.1 70.2 70.I I0.2 70.2 .0.2 70. 70.1 10.1 1.1 1.U.3 70.1 7.GU 190001 70.7 70.1 71.0 71.1 71.2 71.2 71.2 7. 1.2 7I.2 11.3 11.3 71.3 71.5 1.3 I.6E 120001 74.9 74.9 75.3 75.. 76.S 75.5 75.5 75.5 75.5 75.5 75.6 7.6 75.6 76.b 1.6 76.b

E 10000: 0.0 80.0 80.1 80.9 80.6 80.6 80.6 80.6 80.6 80.6 80.7 80.? 80.7 80.7 80.7 63.7bE 9000 82.2 82.2 92.s 82.b 82.7 82.7 82.7 82.7 82. 82.7 82.9 82.9 8Z.9 82.9 92.9 8:.9Gt 80001 86.2 86.2 86.S 86.1 86.9 86.9 96.9 8s.9 86.. 86.9 87.0 87.0 87.0 81.3 17.0 710

UtE 7000 1 .89. 89.1 89.1 89.1 89.1 89.2 89.2 89.2 89.2 69.2 89.2UE 60001 89.9 89.9 90.2 90.3 90.6 90.6 90.6 90.6 90.6 90.6 90.7 90.7 90.7 90.7 90.7 93.7

UE 50001 92.1 9e.1 92.9 92 9.8 9.8 92.8 92.9 92.9 92.9 93.0 93.0 93.0 93.2 97.0 93.2Ut %SOO 92.9 92.9 93.2 93.3 93.6 93.6 93.6 91.' 93.7 93.7 93.8 93.8 93.8 93.8 93.8 93.9bE 40001 99.8 99.8 96.1 96.3 9s.6 95. 5 96.6 96. 95.6 9S.6 9.7 95 .7 96.7 .7 96.1 96.iUt 30 01 96.1 95. 95.9 96.3 96.2 96.2 96.2 9b.3 96.3 96.3 96.9 96.9 96.9 9b.4 96.4 9b.4Gt 30001 96.3 96.7 97.1 97.2 97.5 97.5 97.5 91.6 97.6 97.6 97.7 97.7 97.? 91.7 97.7 97.7

Ut 15001 96.6 96.9 97 97.5 97.7 97.7 97.7 91.8 97.8 97.8 97. 79 97 9 .9 97.9 97.9Ut ~001 96. 97 97 91.8 98.0 98.0 9.0 98.2 98.2 98.2 98.1 98.3 98.3 98.3 98.3 9;.3

GE 18001 96.6 97.2 97.8 97.8 98.2 98.2 98.2 98., 9.98. 98.9 98.. 98.9 96.9Ut IUoI 96.8 97.6 98.2 98.3 98.6 98.6 98.7 98.8 98.8 98.8 99.0 99.0 99.0 99.0 99.0 99.jUt 1Zoo 96.9 97.7 98.3 98.8 98.7 98.8 99.0 99.1 99.1 99.1 99.2 99.2 99.2 99.2 99.2 99.2

Ut 10001 971. 91.8 98.9 98.5 98.8 99.0 99. 99.2 99.2 9.2 99.3 99.3 99.3 99.1 99.1 99.3Ut 9001 97.3 91.9 98.5 97 99.1 99.2 99.3 99.9 99.9 99.9 99.5 99.5 99.5 99.5 99.6 99.5

t I601 97.1 98. 98.7 99.3 99.9 99.5 99.7 99.8 99.8 99.8 99.9 99.9 .9 99.9 99.9 99.9Ut 7001 91.1 98.2 90.1 99.3 99.4 99.5 99.7 99.8 91. 9 99.8 99.9 99.9 99.9 99.9 99.9 99.9Ut 6001 97. 98.2 9.7 99.3 99.9 99.5 9.7 99.8 89.8 99.8 999.9 99.9 99.9 99.9 99.9 99 .9

Ut s600 97.3 98.9 98.7 99.3 99 997 99.8 99.9 99.9 99.9 300.0 100.0 100.0 100.0 100.0 300.0Ut 93301 91.3 98.2 98.7 99.2 99.6 99.7 998 99 99.9 99.9 100. 100.0 100.0 302.3 120.0 100.0Ut 3001 91 98.2 98.7 99.3 99.6 99.7 99:8 99.9 99.9 99.9 100.0 1300.0 100.a 100.0 120.0 00.0

Ut 2001 97.1 98.2 98.7 99.3 99.5 99.71 99.8 99.9 99.9 99.9 100.0 100.0 100.0 100.0 130.0 100.3

UIt Lu0 91.1 98.2 98.7 99.3 99.s 99.7 99.8 99.9 9 99.9 30 0 100.0 303.0 303." 120.0 333.2

( 01 97.1 98.2 98.7 99. 99.6 99.7 99.8 99.9 99.9 99.9 300.0 100.0 300.0 o7.O0 IU.0 10a.3•... ....... .,........ .... o...* .... ,......... .... ........ o .... .. ,...... ,......,.......... ....... . ..... ....... ...... .... ..

TOTAL NUP R OF OO[RVAN:109N 869

I

GLOBAL CLIMAIOLOGY BRANCH PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITYUSAFETAC FROM HOURLY OBSERVATIONS0 AIR WEATHEN SERVICEIMAC

STATION NUMBER: 727855 STATION NA4E: FAIRCHILD AFB WA PERIOD OF RECORD: 15-buMONTH: JUN HOURS(LS|I: ISUO-700

CE IL INI VISIBILITY IN STATU1E MILESIN | GE GE GE GE GE GE SE GE GE GE GE GE GE E GE GE

FEEt II 0 b 5 4 3 2 1/2 2 1 1/2 1 11 1 $/4 5/8 1/2 5/1 1 /4 3

NO CEIL I 52.3 53.0 53.1 53.2 53.2 53.2 53.2 53.2 53.2 53.2 53.2 53.2 5 .2 53.2 !0.2 S3.1

GE ZOOOO 63.6 64.3 64.4 64.5 64.6 64.6 64.6 64.6 64.6 64.6 64.6 64.6 64.6 64.6 .4.b b4.bbE 180001 64.3 64.9 6S.0 65.1 65.3 65.3 65.3 65.3 65.3 6S.3 65.3 65.3 65.1 bS.3 65.3 6S.3GE bOO0 b4.l bS.4 b5.5 65.6 65.7 65.7 6S.? b5. 6S.? 65.7 65.7 65.7 65.7 65.7 65.7 65.7GE 140001 65.4 66.5 b6.6 66.7 66.8 66.8 66.8 66.8 66.8 66.8 bb.8 66.8 66.8 6b.8 66.8 bb.8GE 1ZO001 68.9 69.6 69.7 69.8 69.9 69.9 69.9 69.9 69.9 69.9 b9.9 69.9 b9.9 69.9 69.9 b9.9

GE 100001 72.8 73.5 73.6 73.7 73.8 73.8 73.8 73.8 73.8 71. 73.8 73.8 70.8 73.8 70. 8 73.8GE 90001 74.5 75.2 75.3 75.4 75.5 7S.5 75.S 75.5 75.5 75.5 75.5 75.5 75.5 75.5 75.5 75.SGE BoonI 17.8 78.5 18.b 78.7 78.8 78.8 78.8 79.0 79.0 79.0 79.0 79.0 79.0 79.0 79.0 79.0GE 70001 79.3 80.0 80.1 80.2 80.3 80.3 80.3 80.4 80.4 80.4 80.4 80.4 80.4 80.4 80.4 80.4GE 60U0I 80.4 81.1 81.2 81.3 81.4 81.4 81-4 81.5 81.5 81.5 81.5 83.S 81.5 81.5 61.5 81.5

G1 50001 86.1 86.9 87.0 87.1 87.2 87.2 87.2 80.3 81.3 87.3 87.3 87.3 80.1 87.3 80.0 83.3GE 4SO01 88.2 89.0 89.1 89.2 89.3 89.3 89.3 89.4 89.1 89.4 89.4 89.4 89.4 89.4 89.4 89.4GE 40001 92.0 95.2 93.4 93.1 93.9 9S.9 93.4 94.o 94.0 94.0 94.0 94.0 94.0 94.0 94.(. 94.3GE 3SOO 91.2 94.2 94.4 94.1 94.9 94.9 94.9 95.0 95.0 95.0 95.0 95.0 95.0 9h.0 95.0 95.0GE 30001 94.5 95.7 95.9 96.1 96.3 96.3 96.3 96.4 96.4 96.4 96.4 96.4 96.4 96.4 96.4 9b.4

GE 25001 95.3 96.4 96.7 96.9 97.1 97.1 97.1 97.2 97.2 97.2 97.2 97.Z 97.2 97.2 97.2 97.2UE 20uo 95.s 96.1 96.9 97.1 97.3 97.3 97.3 97.4 97.4 97.4 97.4 97.4 97.4 97.4 97.4 97.4GE tB8O0 9S.S 96.3 96.9 97.1 97.3 97.3 93.3 97.4 97.4 93.4 97.4 97.4 97.4 97.4 97.4 91.4bE ISUOI 96.2 97.3 97.6 97.4 98.0 98.0 98.0 98.1 98.1 98.1 90.3 98.1 98.3 98.1 98.1 98.1GE 12001 96.3 97.6 97.8 98.3 98.2 98.2 98.2 98.3 98.3 98.3 98.3 98.3 98.3 98.0 90.3 98.3

GE 10001 96.3 97.9 98.3 98.3 98.6 98.b 98.6 98.7 V8.7 98.7 98.7 98.7 98.7 98.7 98.7 98.7GE 9001 96.3 97.9 98.1 98.3 98.6 98.6 98.6 98.7 98.7 98.7 98.7 98.7 98.7 98.7 98.7 98.7GE 80 96.0 98.1 98.1 98.b 94.9 98.9 98.9 99.0 99.0 99.0 99.0 99.0 99.0 99.0 99.0 99.0GE foo0 96.3 98.2 98.4 98.7 99.1 99.1 99.3 99.2 99.2 99.Z 99.2 99.2 99.2 99.2 99.? 99.2

bG 6001 96.4 98.6 98.8 99.3 99.4 99.4 99.4 99.b 99.6 99.6 99.6 99.b 99.6 99.b 99.6 99.6

bE soo5 96.4 98.8 99.0 99.4 99.9 99.9 99.9 100.0 100.0 300.0 300.0 100.0 300.0 100.0 133.3GE 4001 96.4 98.8 99.0 99.4 99.9 99.9 99.9 100.0 100. 0 00.0 300.0 300 330.0 100.3 300.0 133.3GE toot 96.4 968. 99.0 9.4 99.9 99.9 99.9 300.0 100.0 100.0 100.0 I0.0 130.0 100.0 100.0 100.0GE 20OI 96.4 98.8 99.0 99.4 99.9 99.9 99.9 300.0 100.0 303.0 300.0 100.0 300.0 100.0 300.0 103.0GE 1001 96.4 98.8 99.0 99.4 99.9 99.9 99.9 100.0 100.0 100.0 300.0 300.0 300.0 100.3 300.0 333.3

GE cI 96.4 98.8 99.0 99.4 99.9 99.9 99.9 300.0 300.0 300.0 300.0 300.0 103.0 103.3 300.0 103.0..... ... ,......o.. o....°=........ .... =... ......................... °,,,...*, ......... *...... .*..... ,..., ........ o*........*..


6

bLO8AL CLIMAIOLOGY BRANCH ?LRC[NTAbE FREQUENLY OF UCCURRENCL OF LLIN1 VFUSUS VIShILITTUSAFETAC FROM HOURLY OBSERVAIIONS

A11 . fA THER [RVlCE/MAC

STIALON NUMBER: 727855 STATION NAIL: FAIRCHILD AFB WA PIP1O] Of RECORD: 75-64MONTH: JUN HOURSIL 5 1 1 200-I10U

... .. .. .. . ..... ... ..... ... .. ... . .. ... . .. .. .. .. ,. ..... •.......... .. ...... .. ..................... ...... o..CEIL N. VISIBILITY IN SIATUIf MILkS

XN |GL f, GE G E G E bE 1 6 GE L[ G GI GE G L 6( GI G E

FEEI I Ia b S 3 2 112 2 11/2 1l 11 I 1 S 1 /? S/I I/4 U.o. o. o.... ..... ........ . .... ...... o.... ,.... oo............ ooooo............ ... oo....,..... o... ................ ...,,o......

NO CElL I 51.6 Sl. 51.4 51 .6 51. . 51.6 SI1 .l. 511 .4 5 .4 SI. .S6 1.. SI. Sl.4

Of 200001 61.1 61.1 61.1 61.1 I 6.1 61.2 61. 61.2 61.2 61.2 61.2 6l.2 b1.2 61.2 61.2 61.2GE 18000 . 61.3 6 6 6 1 61. 61.4 61.6 61. 4 .4 61. 6. 61.G 6.GE .10001 b1.4 61.6 6;.4 61. 61.6 61.6 61.6 61.6 61. 61.6 bI.6 6 b 1.6 6.b 61., 1.6 61.6Gf 10u0 62. 1 62.1 61 62.1 62.1 62.2 b2.2 62.2 62.2 62.2 62.2 62.2 6.2 62.2 62.2 b.2Of 12000 66.3 66.3 66.3 66.3 66.3 66.6 64.4 66.6 66.6 66.6 66.6 66.6 66.6 66.6 66.6 64..

Gf 100001 68.6 68.6 68.6 66.6 68.6 6.17 68.7 68. 7 68. 6.7 68.? 68.7 68.1 66.7 68.b 68.?U 60001 69. 0 6 6 6. 69.0 69.1 69.1 69.1 69.1 69.1 69.1 69.1 69.1 69.1 b9.1 66.101 80001 70.9 70.9 10.9 70.9 70.9 711.0 7 . 7 71.0 7I. 0 11.0 71.0 71.0 7.U .0 1.)OF 10009 1Z.7 72.7 72.1 727 72.1 2.8 78 72.8 12.8 72.8 72.8 72.8 7 .8 72.8 1 2.. 71Gf 60001 71.8 76.8 76.8 76.8 .8 76.6 7.9 7.9 76.9 76.9 76.9 76.9 4 .9 76.9 7.9 76.9

Uf 50001 79.0 79.2 79.2 79.2 79.3 79.8 19.6 79.6 79 79. 76. 7 9.6 19.6 79 .1. 79. 14.6f 6900 80.6 80.8 80.8 80.8 80.9 61.0 81.0 81.0 81.0 81.0 81.0 81.0 81.0 81.0 81.0 81.0

Ut 60001 86.9 87.6 87.6 87.6 87.9 88.0 88.0 88.0 68.0 88.0 88.0 88.0 88.0 8B.0 88.0 86.0

Ut 3E00C 89. 90.b 90.6 90.7 91.0 91.1 91.1 91.1 91.1 91.1 91.1 91.1 91.1 91.1 91.1 61.1GE 30001 91.0 96.0 96.0 96.1 94 .6 9. 96.6 96 96.6 94.6 96.6 94.6 96.6 96.6 66.6 94.b

6E 25001 96.7 95.8 95.8 96.0 96.3 96.6 96.6 96. 96.6 96. 96. 9' '6.6 66.6 96.6 4 .Of 20001 96.9 96.1 96.1 96.3 96.7 96.8 96.8 B68 96.8 96.8 96.8 96.8 96.8 66.86 6.8 6.10E 18009 95.0 96.2 96.2 96.6 96.8 96.9 96.9 96.9 96.9 96.9 96.9 96.9 96.6 96.9 66.9 96.6bE 19001 95.2 96.6 96.6 96.8 97.1 97.2 97.2 97.2 97.2 97.2 97.2 97.2 97.2 97.2 97.1 91.2OF 12U01 95.8 97.2 97.2 91.7 98.0 98.1 98.1 98.1 98.1 98.1 98.1 98.1 98.1 98.1 98.1 9.1

6E 10001 96.6 98.2 98.2 9.1 99.0 99.1 99.1 99.1 99.1 99.1 99.1 99.1 99.1 9:.1 66.1 96.1LI 9001 96.6 98.2 98.2 08.7 99.0 99.1 99.1 99.1 99.1 99.1 99.1 99.1 99.] 99.1 99.l 9..l6t 8009 96.7 98.4 98.6 98. 99.3 99.6 99.6 99.6 99. 99.8 99.8 99.6 99.6 99.' 69.. 96.'b 7001 96.7 98.6 98.6 98.9 99.0 99.6 99.6 99.6 99 99. 99.6 99.6 99.6 99.. 9.4 9.GE 6001 96.7 98.6 98.6 99.1 99.6 99.8 99.8 99.8 99.8 99.8 99.8 99.8 99.8 99.. 99.8 66.8

Of 9009 96.7 98.6 98. 99.2 99.7 99.9 99.9 99..9 999 99.9 99.9 99.9 99 99.9 9.9 6Y.vGE 6001 96.7 98.4 98.1 99.3 99.8 100.0 100.0 100.0 100.0 10.0 100.0 100.0 100. 100.0 00.0 12.ifE 3009 96.7 98.6 98.7 99.3 99.8 10.0 100.0 100.0 100.0 100.0 100.0 00.0 103.0 000 IU0.0 lO.1E 2009 96.7 98. 98.1 99.1 99.8 100.0 900.0 100.0 100.0 100.0 100.0 100.0 100.0 10.0 100.0 13..)

LIE OO 96.7 98.6 98.7 99.3 99.8 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 1do.0 1 .JL;

OE 01 96.7 98.6 98.7 99.0 99.8 100.0 100.0 100.0 100.0 100.0 10.0 100.0 LO0.0 IOU.0 10.0 13.1.. ....... ....... ..... ...... ........... o.... ... *... ..... ... ...... .. . .. . ..... ..... . .. ~... .... ...... ...... ......

OAL NUMBER Of OBSERVATIONS: 900

#P

ULOHII& CLI|AOLOGY RRANCH 'ERC[NTA6[ FREQUENCY OF OCCURRENCE OF CEILINU AfRSUS VISISILIIVUSAFI AC FROM HOURLY O8SERVATIONSAIR WIIIl SERAICE/MAC

,IAIION NUM|R: 727859 STATION NA4E: FAIRCHILD AF8 dA P 0RIOU OF RECOPU: 7--b

MONTH: JUN HOURSILSiI; J9Ufl-IILO

.....~~~~VI I IL T ,. ... .. , ... ... ... ... . . MILE *** . oo o ,° . * . °° . . . . . . , * ° .... o..*...................................Ci IL 3G AISOBILITY 19 SlalUlI MILLS

I N I L t e G G G E G E E G E G E G 1 L U L ht 1tI IL I 10 6 5 R 1 2 1/2 2 11/2 1 1 /9 1 s/M S/8 1/ 9/Ib 1/4 0

......... .......... oo....... ............. .................. .oo.... o.... , ....... ... .... ..... ................................

NO C LL 3 I6.1 56.8 56.8 56.9 56.8 S6.8 56.8 56.8 56.8 S6.8 56.8 56.8 5b.8 56.8 56.8 96.8

l 21(0UO b.2 62.6 62.b 62.b 62.7 62.7 62.7 62.7 62.7 62. 62 62.7 b.? 6,.? U2.7 b2.lA 380001 62.7 61.U 63.0 63.2 63.l 63. 3 1 6.1 6 3.1 63.1 b3.1 63.1 63.l 63.1 13.1 63.1-t I 0C0o ,2.9 61.2 61.2 63.Z 61.1 6.J .3 63. 63.1 633 63.3 61.3 61.3 61.1 3.3 b1.,

3I I 900 b1.9 60.8 11.8 61.8 63.9 61.9 63.9 61.9 6 I , 3.9 63.9 6 .9 6 1.9 61.9 61.9 61.9 61.9.lCin 61.8 68.1 68.1 68. 68.2 68.2 68.2 68.2 b8.2 68.2 68.2 68.2 68 .2 68.2 b8.2 bb.2

1 I100 0I 11.8 12. 1. 72.1 72.2 12.2 12.2 12.2 72.2 72.2 72.? 72.2 72.2 72.z 12.2 11.2.1 9013l 11.1 71.1 73.7 73.1 70.8 73.8 71.8 13.8 73.8 71.8 73.8 73.8 73.8 73.8 1T,8 a .L, IAOLO 16.2 lb. b 76.6 7.6 76.7 76.7 76.7 7.7 16.7 76.7 76. 7 76. 76.7 7.7 16.7 1b.1

1 bnll 78.6 16.9 78.9 78.9 79.1 79.1 79.1 79. 1 79. 79.1 79.1 79.1 79.1 79.3 19. 79.36I f 0001 80.8 8 . 8.1. 81. 81.2 8..3 81.3 81.1 81.3 81.3 81.3 83 81.3 8.3 81.1 83.1

,I 82.9 81.1 81.1 83.. 81.7 81.8 83.8 83.8 83.8 81.8 81.8 83.8 83.8 83.8 81.8 80.8hI .9131 I 1.9 89.9 85.0 85.3 85.1 85.9 85.9 85.9 85.9 85.9 85.9 85.8 85.9 95.9 85.9 8S.9A, *.UU0I AS.? 86.2 86.9 86.5 86.8 86.9 86.9 86.9 86.9 86.9 86.9 86.9 86.9 66.9 86.9 86.9{| 19U01 87.1 88.7 88.9 89.1 89.1 8:.1 89.7 89.7 89.7 89.7 89.7 89.7 89.7 89.? 69.7 89.1

A L .90.6 91. 92.1 92.2 92.7 92.9 92.9 92.9 92.9 92 .9 92. 929 9.9 92.9 92.9 92.9

(.1 210I 91.T 92.7 92.9 90.a 91.6 93.8 90.8 93.8 90.8 93.8 9.8 893.8 91.8 91.8 90.8 91.9

ti I 0C03 9C.1 91.8 99.0 99.3 98.7 99.9 99.9 99.9 99.9 99.9 92.9 99.9 99.9 99.9 99.9 99.1

O1 38003 9 . 90.9 99.3 99.2 99.8 95.0 95.0 95.0 95.0 95.0 95.0 95.0 95.0 9.0 99.0 95.3Al ISUO 91.1 95.3 9S.1 95.9 96.0 96.2 96.2 96.2 96.2 96.2 96.2 96.2 96.2 96.2 96.2 96.2

.7| I2(11 99.0 96.' 96.9 96.7 97.2 97.9 97.9 97. 9 9 7.9 97.9 91.9 97.9 97.9 97. 97.9

fi I 0110 9I .9 9 1 . 9 9 7 7 9 7 . 9 8 .9 . 8 8 . 78 9 . 7 8 9 . 8 9 . 8 9 . 8 9 8 .8 9 8 .8 9 8 .8 9 . 8hA 9011 99.0 91.7 9.9 8 7 98.9 98.9 99.0 99.0 99.0 99.0 99.0 99.0 99.0 99.0 99.

i 8U1 99.1 98.1 98.6 98.6 99.3 99.6 99.6 99.7 9.7 99.1 9 99.7 99.7 99.7 99.7 99.1

S 00 99.1 98.3 98.6 98.8 99. 99.7 9 9. 99.8 99.8 99.8 99.8 99.8 99.8 99.8 99.8 99.8Gf Fwo l 9Z.1 9 .0 9 8.6' 9 88 99.3 9 9 99.7 99.8 9 8 9999 9 .8 9 8 99.8 99.8 99.8 99.8

hi 5|0 9.7 98.9 98.1 98.1 99.9 99.8 99.8 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9hi I 0gI 9" . 98.9 98.7 98.9 99.9 998 9 99 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9hi 1001 99.1 98.6 98.8 99.0 99.6 99.9 99.9 10.0 100.0 100.0 300.0 300.0 100.0 100.0 100.0 3D2.0

i 12001 95.1 9 9.6 98.8 99.1 99.6 99.9 99.9 100.0 100.0 300.0 100.0 80.0 100.0 100.0 100.0 100.

h7 3001 99.3 98.6 98.8 99. 9 99 99.9 99.9 310.0 l00.0 100.0 33O0. 100.0 30. 300.0 (30.0 130.0

hI IO 99.1 98.6 98.8 99.3 99.6 99.9 99.9 100.0 100.0 100.0 300.O 300.0 3o.0 100.0 100.0 3 0.0

**.. .. .. ............ °.... , .... o.o~. . . o . . ... °......o...° ... ° . ° . ° . , oo.....99° .. ° ....... ° °

OTAL NUMBER OF OBSERVAIONS: 900

- - i mm mon IIIIIm

GLO0AL CLIMAIOLOGY BRANCH >ERCENIAGE FREWJfLY Of OCCURRENCE OF CEILING IFWSUS V 1'4lk ItyUSAF TaC tROM HOURY 08 StvAIIONAIR O[WTHER 9XRVICEIMAC

SIAIION N11MLR 127855 STATION NAME. FAIRCHILO A8 WA PtR IUD 57 RICLd 7N D .MONI H JUN OaR. .41 11 J. Jn j...

CEi ILN 9S* IB6L I T IN SIATUIE MILlS

IN | cI Uf Gt SG GE E G G SE G G G Lf U 'tFEE I 10 U s 4 3 2 112 2 1 1/ 2 1 1/4 1 S/4 1/8 1 /2 1 0/ 1,

................. ........ ...................... .. oo.. +,........ .+..........•.................................................

NO CEIL 1 57.8 58.6 S8.7 58.1 58.8 58.b S8.8 58.8 S8.8 58.8 59.8 S8.6 59.0 -,.1 ',Y.. 'l .

(. 200101 69.7 65.9 6.6 65.6 65.7 65.7 66.7 64.7 6.1 6 .7 65.7 66.9 t65. o0.7 6 5-,tSE 1811001 0.8 66.6 o.? 66.1 65.8 6.6 b5.8 65.8 . 6 65. . 66.6 .b .U

G.E 16 001 6.8b 66.6 65.7 6S.7 6.8 65.8 5 5.8 65.8 65.8 65.8 6.9 66.8 66.0 66.1 0,. ,.

bE 4OU 01 6S.8 66.6 bb.7 6b.1 66.8 66.8 66.8 66.8 66.8 65.b 66.8 6b.b 6, 0. I .7. 1. 1 1.l

SE 120001 69.9 70.7 70.8 7U.8 70.9 70.9 70.9 70.9 10.9 70.9 10.9 70.9 71.1 11.2 71.2 1 .

61 1O0001 13.6 7.9 79.6 79.6 79.7 74.7 79.7 79.7 79.7 79.7 79. 7 4: 19.9 793 76.J I,,'GE 90009 76.6 77.9 77.6 77.6 77.7 77.7 7.7 7 7.7 71.7 77.7 77.7 77.7 71.9 78.3 7.1 7..SE WO0O 7 I.9 82.8 82.9 82.4 8.0 83.0 80.0 87.0 83.0 81.0 87.0 85.0 WI.? 87.7 7. 7 .7GE 7000 8 8.8 86.9 86.9 86.0 86. 0 86.0 8 0 86.0 86.0 86.2 80.1 .6. 1 5.

bE 60o 86.2 87.2 81.0 87. 87.9 .9 87.9 81.9 87. .87.9 87.9 81.9 87.7 81.6 87.8 6..

GE 60003 876 88.8 89.2 89.2 89.9 89.9 89.9 89.9 89.9 89.9 89.9 89.9 89.7 6I.8 dl.(.E 9600 87.9 89.2 89.7 89.7 89.9 89.9 89.9 89.9 89.9 89.9 89.9 89.9 93.1 90.2 . v.GE 90009 68.8 91u.2 90.8 90.8 91.2 91.2 91.9 91.2 91.2 91.2 91.2 91.2 91.9 91.6 1.6 i.,SE 3So 89.? 90.7 91.3 91.3 91.9 91.9 91.9 91.9 91.9 91.9 91. 91.9 92.1 92.2 9..

(E 30009 89.6 91.1 91.8 91.8 92.3 92.3 92.3 92.3 92.3 92.3 92.9 92.3 92.6 92.1 92.7 .

GE 26009 89.7 91.7 92.3 92.3 92.9 92.9 92.9 92.9 92.9 92.9 92.9 92.9 93.1 91.2 9.2 7..6E 20009 89.8 92.0 92.7 92.7 93.2 93.2 93.2 90.2 93.2 93.2 97.2 93.2 97.9 93.o 97.6 1..SE 18009 89.8 92.1 92.8 92.8 91.1 93.3 93.7 93.3 93.3 93.3 93.3 97.3 93.6 91.7 91.7 NI.GfE 15009 90.2 92. 3 9.0 93.3 93.9 93.9 97.9 93.9 93.9 93.9 93.9 93.9 99.1 v9.2 99.2 99.9

GE 12001 91.1 93.8 99.6 99.6 95.1 95.1 95.1 95.1 95.1 956.1 95.1 95.1 95.7 9b.4 V5. 99.1

6E 70009 91.8 95.0 95.8 95.9 96.9 96.9 96.9 96.9 9b.9 96.6 96.6 96.6 96.8 90.9 96.9 97.1GE 903 91.9 95.1 96.9 96.3 96.6 96.6 96.6 96.6 96.6 96.7 96.7 96.1 96.9 97.0 97.0 9'..

GE 8009 92.2 95.7 9b.6 96.8 97.3 97.3 97.3 97.3 97.3 97.9 97 97.9 9.7 91.d 97.8 98.1SE 700l 92.9 95.9 96.8 97.0 97.6 97.6 97.6 97.6 97.6 97.7 97.7 97.1 97.9 9b.0 9.0 9b.2GE 6001 9.9 96.3 97.3 97.6 98.2 98.2 98.2 98.2 98.2 98.3 98.1 98.3 98.6 93.7 98.7 98.9

GE S003 92.6 96.8 97.8 98.1 98.8 98.8 98.8 98.8 98.8 98.9 98.9 98.9 99.I 9.2 99.? 99.9:E 92.6 96.8 97.8 98.1 99.0 99.0 99.0 99.0 99 99.1 99.1 99.1 99.3 99.9 99.9 9.7

t.E 3ol 92 .6 96.9 97.9 98.2 99. .3 9.3 99.3 99. 3 9. 99 99. 99.9 99.9 99.q 99.8 99.8 1u.)IE 2001 92 .6 96.9 97.9 98.2 99.3 99.3 99.3 99.3 99.3 99.9 99.9 q9. 99.7 99.8 99.8 13J1OGE 1001 97.6 96.9 97.9 98.? 99.0 99.3 99.3 99.3 99.3 99.4 99.9 99.9 99.7 99.8 69.8 CO.3

GE O 92.6 96.9 97.9 98.2 99.. 99.0 99.3 99.3 99.0 99.9 99.9 99. 99.7 99.8 99.8 733.3• o . . . . . ° . . , . . , . . . °. . . ° . . . . . . . , . °.... ..... °...,....... .... ...... .... . ..... 99. ...... .

T01AL NUMBER OF OBSERVATIONS: 930

S

GLUBAL CL IMATOLOb 1 B ANCH P IL CIN TAG F E uLNC U N OF OEL WRE NL It Cf IL !N6 VERTUS V IS IbIL|YUSA E TAC FOM HOURLY OASEL ANO,

A IR 1EAIIHR IERVICLIAC

S1Af01 NUM IR: 721855 11ATION NTL: FAIRCHILO AF 8 W AREJO0 Of RELOA: 75-b4MONTH: JUL H0URS(tIS? 21U0-2103

... . . .. . .. ... ... •... ... ... .. ..... ... .. • ... ........ ..... .... ... . ........................................CE~~ L 14 811111 1 TTI M ILE S*

IN I 5 GE GE GE 01 "1t 0 G E .GE GE G OL E GE IEFILLI o 3 1 1 / z I./ 1 /4/ 211/ 31 4 3/9 S/ 1 /2 S/I1t 1/ U L

NO CI I 1 77.1 77.3 77.3 7 11. 3 77. 77.3 17. 3 77. 77. 77.1 77. 77.1 71.3 17.1 77.1

GE 200003 82.2 82.5 82.5 82.5 82.5 82.5 82.5 82.5 82.5 82.5 82.5 82.5 82.5 82.5 t2.S 82.5IE 180001 82.2 82.5 82.5 82.5 82.5 82.5 A2.S 82.5 82.5 82.5 82.5 82.5 82.5 82.5 d2.5 2.5E t6000Ib 2 .6 82.8 82.8 82. 82.8 82.8 82.8 82.8 02.8 82.8 82.8 82.8 82.8 82.8 82.8 82.A

GE 34000 b3 .3 83 5 81 5 83.5 aI.5 8 1 8 3 8 81. 85 81 8.5 83.5 83.5ul i 20o0 86.5 86.7 86.7 86.7 86.7 86.7 86.7 8.7 86.7 86.7 86.7 86.7 86.7 86.7 86.7 A5.?

1L 10O01 88.1 88.5 88.5 88.5 88.5 88.5 88.5 88.5 88.5 88.5 88.5 88.5 88 88 88.5 u8.S 88.5GE 90001 90.5 90.1 90.7 90.7 90.7 90.1 90.1 90.1 80.1 90.1 90.1 90.7 90.7 90.7 90.7 90.7

GE 80001 93.0 93.4 91.4 93.4 93.4 9.4 90 .9 93.' 91.9 91.4 93.4 93.9 97.4 91.9 93. 4 91.6E 70001 99.2 99.8 98.8 94.8 95.0 95. 0 95.0 95.0 95.0 95.0 95.0 95.0 95.0 95.0 95.0 95.U

GE 60001 95.1 96.1 96.3 96.3 96.2 96.2 96.2 96.2 96.2 96.2 96.2 96.2 96.2 96.2 96.2 96.2

GE 50001 96.2 97.4 91.4 97.4 97.5 97.5 91.5 91.5 97.6 97.b 97.6 97.b 97.6 97.6 97.6 97.6GE 95003 96.2 97.9 97.4 97.4 97.5 97.5 97.5 97.5 97.6 97.6 97.6 97.6 97.6 97.6 97.6 97.6GE 9000" 97.0 98.4 98.5 9A5 98.6 98.6 98.6 58.b 98.7 98.1 98 98.7 98.7 98.7 98.7 98. 1GE 15003 97.4 98.9 99.0 9.3 99.1 99.1 99.1 99.1 9oZ 99.2 99.2 99.2 99.2 99.2 v.2 99.?GE 30005 97.6 99.3 99.2 99.2 991 99.3 99.1 9 . 99. 99. 99.4 99.4 99.4 99.4 9.4

GE 25003 97.6 99.1 999..3 . 99.3 91 .199.3 99.4 99. 9 99.4 99.4 99.4 99.9 99.4 99.,GE 20003 97.6 99.1 99.2 99. 99.1 99.1 99.1 99.1 99.4 99.4 99.4 99.4 99.4 99.9 99.4 99.GE 38001 97.6 99.1 99.2 99.2 99.1 99.3 99.3 99.3 99. 99.9 99.4 99.9 99.4 99.4 99. 49.94GE 18003 97.6 99.2 99.1 99.1 99.4 99.9 99.4 99.4 99.5 99.5 99.5 99.5 99.5 99.5 99.5 99.4

GE 12003 97.6 99.2 99.1 99.1 99.4 99.4 99.4 99.4 99.5 99.5 99.5 99.5 99.5 99.5 98.5 6.5

GE 30003 97.1 99.3 99.4 99.4 99.5 99.5 99.5 99.5 99.7 99.7 99.7 99.7 99.7 99.? 99.7 99.7GE 9003 97.7 99.4 99.5 99.5 99.7 99.1 99.7 99.7 9 99.6 99.8 99.8 99.8 99.8 99.8 99.8

GE 8003 97.7 99.4 99.5 99.5 99.7 99.7 99.7 99.7 99.8 99.8 99.8 99.8 99.8 99.8 99.8 99'

E 7103 97.7 99.4 99.5 99.5 99.7 99.7 99.7 99.7 99.8 99.8 99.8 99.8 99.8 99.8 99.8 99.8

uE I00I 91.7 99.4 99.5 99.5 99.7 99.7 99.7 99.7 99.8 99.8 99.8 99.8 99.8 99.8 99.8 94.8

GE 5o0 97.7 99.5 99.8 99.5 99.9 99.9 99.9 99.9 300.0 100.0 100.0 300.0 103.0 100.0 IO.0 70.3GE 4003 97.7 99.5 9 9 99.9 300.0 100.0 00.0 300 .0 3. 30U0 0 3 I .

GE 3003 97.7 99.5 99.8 99.8 99.9 99 99.9 300.0 30.0 00.0 100.0 30.0 100.0 IUO.0 ,023GE 2003 97.7 99.6 99.8 99.8 99.9 99.9 99.9 99.9 100.0 100.0 30.0 100.0 100.0 I00.0 300.0 110.3

GE 3003 97.7 99.5 99.8 99.8 99.9 99.9 99.9 99.9 100.0 100.0 100.0 100. 0 301.0 30.0 100.0 1 03.3

GE 10 91.7 99.5 99.8 99.8 99.9 99.9 99.9 99.9 300. 700. 0 100.0 0.0 103. 300.0 1oo.3

.. .... ..... .o........ ..... o. .... . . .* . = . .o....... *..... °............ ... ......... ... .. .o.....


GLU8AL CLIMAIOLOGY bRANCH PELCENIAGE EbE8UENCY OF OCCURPENCLE OF CEILING VERSUS VIS18ItIIT8

USAF TAC FROM HOURLY OSLRVATIONSAIR .THt SERVICE/MAC

STATION NUMBAL: 7Z7855 STATION NA4E: FAIRCHILO AF8 WA PLRIOU (CF RLCJWD: 75-84MONTH: JUL .OURSILSTI: ALL

.. ., . . .. . . . .. .. . .. ... o. . . .. . .. * ............... . ......... ........................................

CLI INS VISIAtLIrT IN SATIITE MILESIN I GE GE GE GE GE GE GE GE GL GE GL GE GE S GE 4 L

FEET 10 3 2 112 2 1 1 /2 Il1 I 3/4 5/ 1 2 1/1 /t...... . .. .................................... . ,....... ,oo.... .... , . .. .... •........ .. ....................................

NO CElL I 70.6 70.8 70.9 7U.9 71.0 71.0 71.0 11.1 71.1 71.1 71.1 71.1 71.1 7 1. I1 7 i.I

UE 200001 76.8 77.0 77.71 17:1 7.2 77 3 71.1 71.3 7 7.3 1:s 77:3 7: ' . 7 . 7.3 77.3GE 18On0 77.1 77.9 77.V 77.9 77.6 77.6 77.6 77.6 7.6 77.6 77.7 77.7 17.7 77.7 77.17 7 .1

bE 160001 7.9 77.b 77.7 77.7 77.a 77.9 77.9 77.9 7 1.9 1 77 .9 77.9 77.9 7V.0 78.36E 100 A 1A.8 7A.9 78. 19.0 19.0 79.0 19.1 19.1 79.1 19.1 79.1 19.1 7.1 79.1 79.1

6E 120001 82. 83.0 83.1 A.1 83.2 .3.3 83.3 83.1 A3.3 8.1 I .3 AI.3 .I.3 83.3 A$.. 83.4

GE 1110001 86.5 86.9 86.9 A7.J A.I A1.1 A7.2 A1.? A7.2 97.2 7.2 A1.2 A1.? 87.2 87.2 e 7.2GE 90001 88.2 88.9 88.6 88.6 88.7 8.A 88.8 88.8 AA.A 88.8 88.8 88.8 83.9 88.9 8.9 98.9

GE 8000, 90.8 90.7 90.8 90.6 91.0 91.0 91.0 91.1 91.1 91.1 91.1 91. 1 91. 91.1 91.1 91.1G 10001 91.7 92.1 92.2 92.2 92.4 9.9 92.5 92.5 92.5 92.9 92. 92.S 92.6 92.b 9,.6 91 .6G[ bou 92.8 93.8 93.5 91.5 93.7 93.7 93.7 93.7 9 .7 95.7 93.8 93.8 93.8 91.8 93.8 93.8

GE 50001 99.8 99.0 99.1 99.1 95.1 95.3 99.1 95.9 99.9 95. 95.9 99.5 99.9 95. 4 95.5GE 4S01 99.9 95.b 99.1 995.1 9.9 95.9 95.9 95 9 96.0 96.0 96.0 96.0 96.3 96.a 96.0 9b.3

UE 4000 99.8 9b.9 96.6 9b.6 96.8 9b.8 96.8 96.8 96.8 96.9 96.9 96.9 9b.9 9b.9 96.9 9b.9SGE 3901 96.2 96.9 97.1 97.1 971 87.3 87.3 97.3 97.V 97.9 97.9 97.4 97.. 97.4 97.4 97..GE 3j0001 96.6 979 97.9 . 97.8 97.8 97.8 97.8 97.9 97.9 97.9 97.9 97.9 97.9 97.9 97.9

GE 20001 96.8 97.6 97.7 97.8 97.9 98.1 98.0 98.0 98.0 98.1 98.9 98.1 98.9 98. 98.1 9.1GE 2500i 97.0 97.9 98.0 98.1 98.2 98.1 98.3 98.1 98.3 98.9 98.8 98.8 98.9 98.9 98.9 98.9GE 18071 97.0 97.9 98.1 98.1 98.3 96.3 98.8 98.9 98.8 98.9 98.9 98.9 98.9 98.9 98.9 98.9E 19001 97.2 98.2 98.3 98.9 98.6 98.6 98.6 98.7 98.7 98.7 98.7 98.7 98.7

9.1 98.8 98.8

GE 12001 97.9 98.6 98.7 98.8 98.9 8990 99.0 99.0 99.0 99.1 99.1 99.1 99., 99.1 99.1 99.1

GE 10on 97.6 98.8 98.9 99.2 99.2 99.2 99.2 99.3 99.1 99.3 99.3 99.3 9. .3 99.3 99.9 99.9GE 9101 97.6 98.9 99.0 999.3 99.9 99.8 99.9 99.8 99.8 99.8 99.9 99.9 99.9GE 8001 97.7 99.0 99. 99.2 99.9 99.9 99.9 99.9 99. 99.9 99.9 99.7 99.9 99.9 99.6 99.6

GE 7001 97.7 99. 99.2 99.1 99.9 99.9 99.6 99.6 99.6 99.6 99.7 99.1 99.1 99.7 99.1 99.7GE 6[ 1 97.8 91 99. 99.9 99.6 99.6 9 9 99. .9.7 99.7 99. 99.8 99 99.8 99.8 99.8

.1 90U01 97.8 99.2 99.. 99.9 99.7 99.7 99 9.8 99.8 99.8 99.8 99.9 99.9 99.9 99.9 99.9 99.9(If 9001 97.8 99.2 99.9 99.9 99.7 99.7 99.8 99.9 99.9 99.9 99.9 99.9 99.9 99.9 100.0 19y.3GE 301 91.8 99.2 99.2 99.9 99.7 99.7 99.8 99.9 99.9 99.9 99.9 99.9 99.9 99.9 100.0 199.7GE 0 97.8 99.2 99.9 9 99. 99.7 99.7 99. 99.9 99.9 99. 99.9 99.9 99.9 99.9 100.0 !d33bG sUOI 97.8 99.2 99.9 99.9 99.7 99.7 99.8 99.9 99.8 99.9 99.9 99.9 99.9 99.9 193.0 991.3

GE 01 97.8 99.2 99.9 99.5 99.7 99.7 99 99 99.9 99.9 99.9 99.9 99.9 99.9 99.9 100.0 100.0

• . .. .o * 8 .... 99:1 ... 9 .... ....5......... . . o. . ... * ... . . ... ...** ** * * * ** * * * . . . . . . . . . .. . .. . . .. . .

TOTAL NUMbER OF ORSERVATIONS: 1262

0

LO8L CLIA1OLOGY BRANCH tRCENIAbt FRELUENCY Of OCCURENCE Of CILIN(, VERSUS VISIBILITYUSAFETAC FRO HOURLY OSERVATIONSAIR WEATHER SfRvICE/MAC

STATION NUMBER: 727855 STATON NA49 : FAIRCHILO AF8 WA PLRIOU OF RCORUD: 715-84MONIHn AUG HOUW9SLSTI: 3000-0200

• ....* .... . .. o. . . ... .. . . . .. . ... .o......°.. ... ........... ............. ............. .......... * ...........CE ILING6 81618|L70T1 I ATUTE MILES

IN I 0L GE GE GE GE GE GE E GL GE Gi G[ GEL E G L GF EE I 1 0 t, 5 3 2 112 2 1 1 /? 11 / 1 3/4 /8 112 S/1b 3/4 0.,........... o.....o ....... ,.... ...................... .... .. o ...... oo....................,...................................

NO CEIL I 16.1 7b.1 7b.I It. 1 6.1 7b.1 7. 1 6.1 7b.1 lb.1 76.1 76.1 lb.1 7b.1 16.1 7b.1

GE 200001 79.9 79.9 79.9 79.9 ;9.9 19.9 19.9 79.9 79.9 79.9 79 .9 79.9 19.9 79.9 79.9 79.9GE 188000 0 80.0 80.0 80.0 0.0 .0 80. 800 80.0 80.0 8U.D 83.0 80.0 80.01 83.3

GE 1600 80.0 8 0.0 80.0 80.0 80.0 800 0.0 80.0 80.0 80.0 80.0 80. 0 80.0 8.3 80.0 0.0GE 120001 80.8 80.8 80.8 80.8 80.8 80.8 80. . 80.8 80.8 80.8 80.8 82.8 80.1 80.8 8.8GE 120001 89.2 89.2 88.2 84.2 88.2 88.2 89.2 8.2 88.2 89.2 89.2 88.2 89.2 88.2 99.2 8F.2

GE 100001 88.b 88.6 88. 88.6 88.8 88.8 88.9 88.9 88.9 88.9 88.9 88.9 88.9 88.9 88.9 88.9GE 90003 90.1 90.3 90.3 9U.1 80.6 90.5 90.6 90.6 90.6 90.6 90.6 90.6 90.6 90. 90.6 9!.b

GE 80001 92. 2 92.2 92.2 92 92 92.9 9.5 92. 5 92 92.5 92.5 92.5 9z.5 92:. 92.6 91.5GE 70001|99.1 99.3 9 8.3 99.3 99.6 99.6 94.6 94.6 98.6 99.b 99.6 99.6 99.b 99.6 99.6 94.b

GE 6000 95.5 95.5 96.S 59. 95.7 9S.7 9$.8 95.8 96.8 958 95.8 95.8 95.8 956. 9 .8 aS.8

6E 60001 96.5 96.5 96.5 96.0 96.7 96.7 96.8 96.8 96.8 96.8 96.8 96.8 96.8 96.8 96.9 96.b01 96001 96.7 96.7 96.7 96.7 96.9 96.9 97 .0 97.0 97 97 97.0 97 97 97.0 97.0 97.aGE 90001 97.7 97.8 97.8 91.8 98.1 98.1 98.2 98.2 98.2 98.2 98.2 98.2 98.2 98.2 98.2 98.2GE 36001 97o 8 98.0 98.0 98. 98.2 98.2 98.3 98.3 98.1 98.3 98.1 98.0 98.0 98.1 98.1 98.1GE 30001 98.8 98.6 98.6 98.6 98.7 98.7 98.8 98.8 88.8 98.8 9 9 9 98.8 98.8

GE 25003 98.8 98.6 98.6 98.0 98.7 98.7 98.8 98.8 9. 98.8 98.8 98.8 98.8 98.8 98.8 9.GE 2O00 98.8 98.6 98.6 98.6 98.7 .9 98.8 98.8 98.8 98.8 98.8 98.8 98.8 98.8 98.8 98.9GE 18001 98.4 98.6 98.6 98.6 98.7 98.7 98.8 98.8 98.8 98.8 98.8 98.8 98.8 98.8 98.8 98.8

GE 16001 98.9 98.6 98.6 98. 98.7 98.7 8. 98 98 9 98.8 98.8 98.8 98.8 98.8 98.8GE 2001 98.7 98.8 98.8 98.8 99.0 99.0 99.1 99.1 99.1 99.1 99.1 99.1 99.1 99.1 99.1 99.3

GE 10001 98.7 98.8 98.8 98.8 99.0 99.0 99.1 99.1 99. 99.1 99.1 99.: 99. 99.1 99.1 9.1GE 9001 98.8 98.9 98 98 9 99.1 99.1 99.2 99.2 99.2 99.2 99.5 95 9.2 99.2 99.2 9.GE 8001 98.9 99.0 99.0 99.3 99.2 99.2 99. 99.6 9.6 9. 99.6 9.6 99.6 99.6 9.8 99.GE 701 98.9 99.1 99.1 99.1 99.9 99.8 99.7 99.7 99.1 99.7 99.7 99.7 99.7 99.1 99. 9 .7

GE 600g 98.9 99.a 99.2 99.2 99.6 99.6 99.8 :"7 9 9 99.8 99 99 9 9 99.8 99.8 99.8 99.8

GE 6001 99.0 99.8 99.9 a 99 99. 99 9999.9 99.9 99.9 99.9 99.9 99.9 9 .9GE 8001 99.0 99.9 9 99.9 99.6 99.6 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9 9.9GE 7001 99.0 99.8 99.. 99.9 99.6 99.6 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 00.0 33.3GE 2U01 9990 99.a 99.9 99.8 99.6 99.6 t00.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 130.0 130.0GE 1001 99.1 99.9 99 99.9 99.6 99. 100.0 100O 100.0 107. 100.0 100.0 100.0 1001.0 103.

(.E ; 99001 99.0 99.4 9. 99.: 99.6 99.6 100. 0 .O 100.0 100.0 100.0 0 100 100.0 i00..0 00.0 .303.

10181L .E0 0100 800T1ON6. 90

'S..

T

£-4

,L. '_ _

1GL1OB11A C1|MAIOOGY BRANCH PEWCENTAE FR 3LN9 Of 0CCUJ4RENCE p 1 3 4IN6 VERSUS VISIBILITY

USAFEI C F OM HOURLY ObSLVAT1O8NS

AIR 6EATHER SERVICE/MAC

StATION NUMBER: 727855 STATION NA-i FAIRCHILD &Fb 6A PLRIOD UF RLCURU. 75-84MONTH: AUG HOUASILSII: 03U0-0500

CEILING '"VISIBILITY IN 0I87U11 MILES

IN I G1 GE GE GE GL 6E GE GE G E GL GU GL GE GE .7EiUl I 10 6 S 4 1 2 1/2 2 I 1/2 1 1/4 1 31/4 5/18 112 5/16 14 ............ ... °.......... .. ° .. o°. . ....................... ..... o, ..... ,.....................................•..............o..

NO CLIL I 72. 73.u 13.1 TS.Z 11.2 13.3 11.2 13.2 13.2 13.2 7733 17.3 73.3 73.3 7s.3 13 .

G( 20000 3.1 lb.T 7 .8 7.4 76.9 76.9 7.9 76.9 16.9 16.9 17.1 7.1 71.1 71.1 77.1 11.1GE 18000 .3 .9 770 17.1 17.1 71 1 7 7.1 7 17 .3 71.3 7 .3 7.1 17.701 1(01 76.0 T1.0 T/.1 7T. 77.2 77.2 11.2 77.2 77 77.2 77.2 77.4 77.4 7.4 77. 7.GE 1000 77.3 77.8 78 81 18 1. 7 78,. 18.1 78.3 78.3 71.1 71.1 74.3 1.3GE 120101 80.8 81.3 81.4 81.0 81.0 81.0 41.6 11,. 81.6 R1.b 81.8 81.1 11.8 Ra.8 81.8 a1.8

GE 1(0130 86.0 86.b 86.7 86. 811 8b.8 11.9 8b.9 Ab.9 86.9 87.1 81.1 81.1 81.- o1.l 81.101 9000 117.3 88.G 88.1 81.2 11.2 88.2 88.3 88.3 88.1 88.3 8.5 81.5 18.0 88.0 1.0 8.3GE 80901 89.8 90.4 90.0 80.6 90.6 90.6 90.8 90.8 90.8 90.1 92.0 91.0 91.0 92.0 91.0 9 .UE 70001 90., 91.5 91.6 91. 41.1 91.7 91.8 91 9J.8 91. 92.0 92.0 92.0 92.0 92.0 92.1uE b0101 92.2 92.9 91.0 91.1 91.1 93.2 91.1 91.3 93.3 97.3 93.0 93.5 93.s 91.0 41.0 47.0

u L 0D30 93.2 98: 94:Z 94.2 94.2 94.3 94.4 94.4 94.4 94.8 94.6 94.6 94.6 94.b V4.6 94.6GE 40UO 93.7 99.4 94.0 94.6 94.6 94.7 9.8 94.8 94.8 94.8 95.1 9s. 95.1 90.1 vs.% 9b.1G 40 99.8 90.1 90.8 90.4 90.4 96.0 96.1 96.1 96.1 96.1 96.3 96.3 96.3 9 .3 96.3 96.3GE 70301 99.9 95.8 90.9 96.] 96.3 96.1 96.2 9b.2 .8.2 96.2 96.S 96.5 96 . 96. 5 96. 96.0GE 3300 90.7 93.6 96.1 96.8 96.9 91.0 97.1 91.1 97.1 91.1 81.1 97.3 91.3 91.3 97.1 97.3

GE 20IO01 90.7 9.6 96.1 96.4 96.9 97.0 97.1 97.1 9.1 91.1 97.3 91.3 91.1 91.3 91.3 97.3GE 2 9001 90.1 96.8 91.0 97.1 97.2 91.3 97.4 91.4 91.4 97.4 97.6 97.6 91.6 91.6 97.1 97.1GE 18 0 90.7 96.9 97.7 97.2 91.9 97.4 91 91.0 97.0 97.0 97.7 97.7 97.7 97.1 97.8 97.8GE 10133 40.8 97.0 91.2 97.1 97.8 97.0 97. 97.6 91.6 97.6 7.8 97.8 97.8 97.8 48.0 48.0GE *2601 96.0 91.2 97.4 97.0 91.6 9171 97.8 97.8 91.8 97.8 98.1 91.1 98. 97.1 98.2 91.2

uE 100 96.2 97.0 97.1 9 7.92 . . . 9.6 98. 98. 98. 98.4 98.4 98.4 98 98.GE 9U~l~t 96.2 91.0 91.7 97.4 98.0 98.1 98. 98.2 98.28.2 9 48. 98. 98.4 98.4 48.6 .GE 8s0 96.0 97.7 98.0 94.1 98.2 98.3 98.6 9.6 98.6 98.6 98.8 98.8 98.8 98.8 99.0 99.0GE 10u1 96.0 98.2 91.1 97.5 98. 98.b 98.9 91.9 98.9 98.9 99.1 99.1 99.1 99.1 9.4 99.4.t 1 01q 69. 98.6 98.7 99.7 99.1 99. 99: 99.4 99.4 99.4 99.4 99.6 99.6

E 001 96.8 911.2 91.4 911.. 98.6 98.7 99.1 99.1 99.1 99.1 99.4 99.: 99.4 99.4 99b 998bE 4001 97.0 48.4 911.6 91.7 98.8 98.9 99.4 99.4 99.4 99.2 99.6 99.6 99.6 99.4 99.8 99.8GI G3O 97.0 91.0 98.1 98.1 98.9 94.0 99.0 49.0 89.0 99.0 99.7 99.7 99.? 99.1 99,9 99.9GE 21( 91.0 98.0 91.7 911.8 98.4 99.0 99.0 99.0 99.0 99.0 99.1 99.7 99.7 99.1 11(30 703.001 1001 91.0 98. 98.7 98.8 98.9 94.0 99.0 99.1 99.0 99.0 99.7 99.7 99.1 99.1 100.0 100.0

.E 31 97.3 98.0 98.7 911.11 98.9 99.0 99.0 99.0 99.0 99.0 99.1 99.7 99.7 94.7 100.0 99 00.

731111 NUMAER or G8BS(911T1ON0; 910

I

fI I . 8.I 8 8 B 90 9 9 . .. 9 5 9

TIE 71 91. 98. 98 9b 8 98: . .. 9 0 9 S -9 :1 ... 9 9 5 . .9" 99 9 9 .99 7 99 7 10.0 O .

GLOBAL CLIMA7OLDUY BRANCH. 0 CENIAG FRE .UENLY Of UCCURRINCL Of CEILING VERSUS VI56I4LIIUSAFE AC FROM HOURLY O0oSRVATrONSA7R 6E8aTE8 SE88ICE/MAC

678710N NUM EW: 12185 1TAIION NA4E: FAIRCHIL0 AF WA PERIOD OF RUCURDJ: 75-6MON IH AU,G H 0 RS( SI I jbU'o-)bj

.. ... .. .. ... .. ... .. .. o .. . .. .. .. .. .. . .. .. . .. ... o .. . . . . .. .. . . . .. .. .. .. . .. .. .. .. .. .. .. .. .. . .. ..o . .. ..

CE ILINOG 8ISI/L13 IN STATUTE MILES1N I GL (E GL GE GE 6( GE GE GE GE GE GE GE GI GL 5t

FEEl I 1 0 S 2s e 2 1/2 1 1/8 g , 5/ / / Z / I I /4

NO CElL b7. 68.5 68. 6 68.b b8. 68.6 8 68.6 6b.6 68.6 68.6 b.b 68.6 60.b to.I 69.I

GE 20001 72. 713.9 747. 7 4.3 18! 77l% . E.1 14.1 78.1 78.1 74.1 74.1 19.1 18.2 7:.GE 18000 72.6 1.1 74.2 74.2 78.1 18. 8 1 .1 17.4 78.3 78.1 78.1 78.3 73.1 74.. 74.8GE 7600 72.9 74. 78.5 78.5 7.6 7 .6 78.6 78.6 78.6 78.6 78.6 7.b 74.6 17.6 74.7 4.1GE 180001 13.9 75.8 75.S 7 .5 75. 7..6 . 6.b 75.b 16.b 75.b 16.6 76.b 7.6 1.b 7. 75.7GE 120001 78.3 79.8 19.9 79.9 80.1 80.7 80.1 80.1 80.1 80.1 80.1 80.1 80.1 80.1 U 1.Z 80.2

6E 70000! 82. 88.0 88.7 8:.7 88.: 84.3 88.3 84.1 88.3 84.3 8.3 88.1: 8.1 8,.1 84. 14. 4.GE 9700 83.s 8.1 86.8 85. 8 5. 85.6 85.6 85.6 8 5.6 8.6 85.6 .6 86.6 86.6 85.7 5.7

bE 800 85.9 81.7 8787. .8 88.7 88.1 88.7 88.1 88.1 88.1 88.1 88.7 88.1 88.1 8.2 .2GE 7000 89.8 90.3 90.8 90.8 90.6 90.6 90..6 9.6 90.6 IS. 90.6 90.6 .1 90.6 9 9. .6 40.8 90.8GE bOOO 89.7 91.7 91.6 91.8 92.0 92.0 92.0 92.0 92.0 92.0 92.0 92.0 92.0 92.0 92.2 92.2

GE 50001 90.6 92.7 92.8 9z.8 91.7 93.1 93.1 93.1 91.1 93.1 93.7 81.1 9. 93.1 91.2 93.2GE 8607 97.7 91 91.2 93.2 93.7 93.7 93.7 93.7 93.7 9391.7 93.7 93.7 93.8 91.8

GE 40U0 9.4 91. 98.7 91.1 9.6 9.6 98.6 98.5 98.5 98. 98.6 98.5 94.5 98.5 94.b 94.6GE 35001 91. 98.13 94.2 98.Z 98.6 98.b 98.6 98.6 98.6 98.6 98.6 94.6 94.6 94.6 94.7 94.76E 30001 91.6 98.4 94.7 98.7 95.1 95.3 95.3 95.1 95.3 95.1 95.3 95.1 95.3 95.3 95.' 95.4

GE 25007 91.6 98.5 98.8 98.8 95.4 95.8 96.8 95.8 95.8 95.8 95.4 95.8 95.8 95.4 6.5 9.5GE ZOOa 91.7 98.7 95.1 96.7 95.6 96.b 95.6 96.6 95.6 95.6 95.6 96.6 96.6 95.b 46.7 96.8GE 7900 91.8 98.8 95.2 95.2 95.7 9S.1 95.7 95.7 95.7 96.7 96.7 95.7 96.7 95.7 95.8 95.9

E SO 92.3 95.5 96.8 95.9 96.3 96. 96.3 96 6.1 96.1 96.3 96.3 96.3 9.3 46.6 96.6GE 12UO 9Z.8 96.0 96.1 96.1 91.1 97.1. 97.7 91.7 97.7 97.1 97.1 97.1 97.1 97.1 S7.2 91.3

GE 10001 93.1 96.6 96.9 97.J 98.0 98.0 98.7 98.1 88.1 98.1 98.7 98.7 98.1 98.1 8.2 98.3GE 9001 93.2 9b.7 91.1 97.2 2 98 98.2 98.3 98.1 98.3 98.3 98.3 98. 98.0 98.1 98.9 98.6GE 80 93.8 97.7 91.6 97.6 98.6 98.6 98.7 98.7 987 98.7 98.7 98.7 98.1 98.7 98.8 98.9GE 7001 93.6 97. 97.6 97.8 98.8 98.8 98.9 98.9 98.9 98.9 98.9 98.9 98.9 98.9 49.0 99.1

GE 6001 93.5 97.3 97.7 98.8 9.9 9. 99.7 99.1 99. 99.7 99.1 99.7 99.1 99.1 99.2 99.4

GIE suO 91.5 97.4 98.0 98.3 99.2 99.2 99.5 99.5 99.5 99.6 99.5 99.5 '99.5 99.5 99.6 99.1GE 47JOj 9 3. 97.4 98.0 98.3 99. 99.8 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.7 98.8

GE 3001 915. 97.4 98.0 96.1 99.8 99.8 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.7 99.8GE 2601 99.6 97.4 98.0 98.0 99.8 99. 99.6 99.6 99.6 99.b 99.6 99.6 99.6 99.6 99.7 99.9G E 7u13 91.5 97.8 98.0 98.1 99.8 99.8 99.6 99.6 99.6 99.7 99.7 99.7 99.7 99.7 99.8 10U.1

GE )I 93.5 97.8 98.0 98.3 99.4 99.4 89.6 99.6 99.6 99.7 99.7 99.7 99.7 99.7 99.8 703.o

OTAL NUMBER Of OBSERVATIONS: 910

S

0108A1 0IMAIOLO¥ 8N0H "aENIA, FQEwuNCYO1 9C L U1RL6 0 O LI I I11NG VIRSUS VISLEILII YuSAF 7I FROM HOURLY 08' PAI3065

t AIR " IHtw S|tkV &c /

STAJION NUMBER: 127800 STATION NAIL: FAIRCHILO AFB A Pt|OU OF RECORD: 75-b4"ONIH: AU H000RS(L 1 -31: l I f1

.. ~ ~ ~ ~ ~ ~ ~ ~ ~ p ... ,... . ..... .............. . ..... . ........... ..... . . .. .. .. .. .. .. .. . .. ... .. .. .. .. .. .. ...

CIINo V101811 i7 I1A/U73 MILE5

IN I E C G I E GE (1 GE GE U t 1 GL G L GL .ffll I 10 2 112 Z 1 1/2 1 1/4 1 3/4 018 I/2 5/3i I I / i

N0 CELL 1 67.7 68., 68.2 68.2 68.3 68.3 68.1 68.1 68.3 68.1 b8.3 6d.1 68.S 6.1 66.3 68.3

b1 20010! l6.1 16.9 71.: 71.J 11 11.1 77.1 17.1 17. 71.1 17 .1 17. 77.3 17.1 -s.sC1 LIOO 16.6 71. 07.4 71.4 77.5 77.7 77.5 17.0 7.. 77.5 71.0 77.5 71.5 71.5 77.5

(It 16000 16.9 7 77. 77. 8 11.8 11.8 77.8 17.8 71.8 77.8 77.8 77.8 77.8 71.d 7t.GE 1410 78.0 78.8 79.1 79.0 79.I 1V.1 79.3 19.1 79.I 79.1 14.I 79.] 7.1 V I1 7. 1 .1 I.I01 12o001 80.8 81.8 82.6 82.2 82.4 82.4 82., 8Z.- 87.4 82.4 82.4 82.4 82. f7I. ,2 .4 ...

UE 100001 :4.2 80.4 84.6 80.? 85.9 80.9 8:.9 80.9 80.4 80. 80.9 80.9 80.1 8:1. 80.0 : 5.8LE 9000 80.8 6 86. 87.1 87.1 87.3 87.1 87.3 81.1 87.3 81.3 87.1 47.1 87.1 .101 8000 68.2 84.4 89.6 89.1 89.9 89.9 89.9 84.99 9.9 9.9 8 9. 8Y.4 849 .9.9 64.G1 000! 89.4 V9.6 90.9 99., 9I. 99.2 99.2 91.2 41.22 99. .1.2 91.2 9.1 e 9.2 1.2G 600o 90.2 91.9 92., 92. 92.7 92.1 92.7 92.7 92.7 92.1 42.1 92.7 42.7 4,.7 82.7 42.7

L1 S0UD 90.q 9z.2 92.6 92.1 92.9 92.9 92. 9 92.9 92.9 92.4 42.4 42.4 42.9 9.0 42.9 29.9G1 4560 90.6 92. 927 92. 3.0 9.6 93. 0 97 0 91.0 9 .0 91.0 41.0 91.0 13.0 41.1G( 9001 93.3 92.8 93.2 91.1 90.0 90.0 90.0 93.0 4.0 93.0 9q. 9s. 87.0 4 .0 47.0 03.0

01 160 I 9.1 92.8 9a. 97.0 91.88 39.8 81.8 91.8 97.8 93.8 97.8 9.8 47.8 47.8GE 3000! 93.9 93.8 94. 9 4 .0 4. 94 7 94 941 94 9. 9. 99. 9.7 44. 4. 49.1

1 500 1 92 . 94 2 99.6 94. 90.2 95.2 40.2 95.2 9o2 90.2 95.? 90.2 95.; 45.2 9.2 95.2

6f 2000! 91.0 94.9 9S.: 95.7 96.9 90.9 90.9 90.9 9s.9 90.9 90.9 90.9 46.4 90.4 40.4 4.9G1 1800 91.0 94.9 95.4 90.? 959 959 96.9 96.9 96. 9 90.4 90.9 95.9 96.9 90.9 0.9 0.015 500 93.0 90.9 4b.0 98.7 96.9 96.9 96.9 96.9 96.9 96.9 96.9 96.9 96.9 9b.9 96.4 9b.G 12001 94.3 96.8 97.5 97.1 98.0 98.a 98. 0 98.0 98.0 98. 0 98.0 98.1 98.0 98.0 48.0 9b.

E 3000 94.7 97.8 98. 9 9 9. 4 9 8.8 7.8 48.8 98.8 98.8 98.8 9.8 98.8E1 900 94.7 97.4 98.2 98.6 98.8 98.8 98.8 98.8 98.8 98.8 98.8 98.8 98.8 9.8 48.8

0E 800! 94.8 5 .0 98. 98.8 99.01 94.0 9.0 99.0 99.0 9.0 99.0 99.6 99.0 94.0 99.0 9.11 700! 944.8 97.8 99.0 9.0 99.0 990 99.0 99.0 49.0 99.0 99.0 94.0 44.0 44.0

01 6001 94.8 97.5 98.1 98.. 99.4 99.4 99.5 99.5 99.5 99.0 99.0 99.6 9.5 99.0 99.5 94.0

61 su50 99.4 9.6 98. 8.8 99.7 99.7 99.8 99.8 99.8 99.8 99.8 99.8 99.8 9 . 94.8 94.8It 410 94.8 97.b 98. 4 98.9 99.9 94.4 0O0.0 300.0 100.0 109 900.0 0.0 00.0 107.0 311OU.0 3O0.O LO.00, E SU 99.8 91.6 98.4 98.0 99.9 99. 9100.0 100.0 100.0 300.0 100.0 300.0 300.0 100.0 100.0 0.DG0 2UO1 94.8 91.6 98.4 98.0 99.9 99.9 300.0 00o.0 100.0 300.0 10.0 300.0 100 0.0 07.0 300.0

4L I001 94.8 97.6 98.4 9b.3 99.9 99.9 100.0 100.0 100.0 100.0 100.0 300.0 300.0 300.1 I01 300.0

G0 01 94.8 97.6 98.4 989 9.9 99.9 3O0.0 301. 100.0 300 .0 310.0 100.0 100.0 00.0 100.0 101.0.. .. ~o ., *. .... .. .. .... .... . .... . . . . . . . . . . .... ... .... ....: .. ...... ....... .. .... . ..... .= °

OAL NUMBER OF OBSERVATIONS: 910

*1

-~I

.LOOAL CLIMATOLOGY BRANCH E8CENIAGE FWE..uLNCY OF UCCURRENCE OF CCILING VIASUS WIS161LIIYUSAL I IAC FROM HOURLY 06SLPVATIUNSAIR .1 ATH(R SfRVICE/MAC

SIA1O. NUMBER: 727855 SIAIION NA ; F [RCHILD AF8 WA PL1OU Of RELORU: IS-A.MONTH: AUG HOUROtLsII. |ZUO3I.1J

C~lI IN ISIBJEITY IN STATUTE MALESIN I GE GE 6L OF GL GE 3 GE G E GE GE L L .L 6 .1

'E I I 10 6 5 3 2 1/12 2 11/2 1 1/4 1 3/4 Sib 112 /1. 1 /4................................................ + *. . . . . .*. . . . . . . . ., . . . . . . . . . . .,. . . . . . . . .

NO CEIL 1 t2.7 b2.7 62.7 b2.1 63.0 b310 63.0 63.0 63.0 b3.0 b.0 63.U 6.3 61.0 t3.0 b.3

GE 200UO 10.8 7 .9 70.9 10.9 71.2 71,2 71.2 1.2 71.2 21.2 71.2 1.2 11.2 71.2 11.2 1.27E 19000 71.4 71.5 73.5 11.0 71.8 71.6 71.8 71.8 71.8 71.8 11.9 13.8 1.8 71.6 11.8 1.

El 16000 71. 1 .6 11.8 71.8 72.2 12.2 12.2 72.2 72.2 12.2 12.2 12.2 72.8 72.2 12.8 7.2bE 14OO 73.3 I1.4 13.4 13.4 13.8 1,8 7 13.8 73.8 3.8 73.8 13.8 73.8 73.8 73. 71.8 73.G I0OO 1 17.1 77.2 77.2 77.2 77.5 771.5 77.5 77.5 77.5 77.5 77.5 7 1.5 17.0 77.5 77.5 77.S

OfE ILOCO 1 79.6 79.8 79.8 79.9 80.2 80.2 80.2 80.2 80.2 80.2 80.2 80.2 83.2 80.2 63.2 8O.GA 90001 81.3 81.0 81.S 81.6 61.9 81.9 81.9 81.9 81.9 81.9 81.9 81.9 81.9 81.9 8.9 81.9

GE 8000 81.2 83.0 83.0 83.1 64.0 84.0 84.0 84.4 64.0 84.0 84..0 4 84.0 84.0 99.0 84.

E 1001 84.0 8. 85. 80.2 85 .5 5 .5.9 8s.. 88.5 85.5 85 80.5 60.5 85.5GE 60001 84.9 86.1 86.1 86.7 8.6 86 6 6 86. 6.6 86.6 8b.6 86.6 86.6 86.6 86.6 8.6b

GE 5000 88.2 89.4 89.4 89.0 89.8 89.8 89.8 88.8 89.8 89.8 69.8 89.8 89.8 89.8 89.8 89.8

6[ 4500 88.9 90.2 90.2 90.0 90.6 90.6 90.6 90.6 90.6 90.6 90. 90.6 90.6 90.6 90.6 93.61 40001 9 2.0 93.1 93.4 9 0. 9.9 93.9 93. 99 9 9 9.9 93.9 93.9 93.9 93.4 93.9 41.9 43.9

GE 301 93.0 94.3 94.4 94.0 94.8 94.8 94 9 99.8 94.8 94. 94.8 8 94.6 94.8 94.8 44.6 94.6OU 3T00 94.8 96.7 96.8 96.9 97.2 7 97.2 97.2 97.2 . 7 97.2 97.2 97.2 9 .2

GE 200 95.6 97.b 97.7 97.8 98.2 98.2 98.2 98.2 98.2 98.2 98.2 98.2 98.2 98.2 98.2 9,2bE 200 95.9 98.z 98.3 98.4 98.7 98.7 98.7 98.7 98.7 98.7 9.7 98.7 98.1 98.1 98.7 1.1

CE 1800 95.9 98.2 98.3 98.1 98. 7 9 8.7 9 8.7 9 8.7 99.1 98.1 9 8. 9.. 1 98. 1 98.7anE 100 96.1 98.5 98.6 98.8 99.1 99.1 49.3 99.1 99.1 99.1 99.1 99. 99 99.1 99.1 99.1

GE I200 46.5 98.4 99.0 99.: 99.7 9 .7 99. 99.7 99.7 99.1 99.1 99.7 99.1 99.7 94.1

6E 1000 96.6 99.0 99 5 99.8 99.8 8 999 99.9 99.9 99.9 99 99.9 99.9 99.9 99.9GE 901 96.6 99.0 99.1 9. 9 99 99.9 100.0 100.0 100.0 100.0 100.0 100.0 300.0 100.0 O.0bE 80 96.6 99.0 99.1 94.5 99 9 9.9 99.9 3 00.0 100.0 0 00.0 100.0 100.0 0. 3.0 00.0Of 100 96.6 99.0 99.1 99.0 99. 9 99 99.9 100.0 100.0 100.0 100.0 100.0 100 .0 10.a 100.0 100.0

B 600 96.6 94.0 99.1 99.0 99.9 99.9 9:9.9 100.0 10.0 100.0 100.0 300.0 00.0 100.0 100.0 103.0

GE 5001 96.6 99.0 99.3 99.0 99.9 99.9 99.9 100.0 100.0 100.0 100.0 300.0 103.0 100.0 107.0 10.3[ 401 46.6 99. 9.1 99. 99.9 999 99.9 100.0 100.0 100.0 100.0 '00.0 100.0 100.0 100.0 037.0GE 6001 96.6 99.0 99.1 99.5 99.9 99.9 99.9 100.0 300.0 100.0 100.0 00.0 300.0 1O0.0 O 10.0 0GE 2O0 96.6 99. 99 995 99.9 99.9 99.9 300.0 300.0 300.0 100.0 300.0 300.0 100.0 1O0.0 1011.0GE 1001 96.6 99.0 99.1 99.5 99.9 99.9 99.9 100.0 300.0 100.0 300.0 100.0 I00.0 100.0 30.10 Ioo.a

uE 0l 96.6 99.0 99.3 0 99.9 100.0 Tun.0 300.0 300.0 100.0 300.0 100.3 3100.0 IO.0

308L NUMBER Of OS(RVATIONS: 930

.,4ra,

U OtUtAL CLkIIOLO6Y BkANC8 8[kCLNIAJE FREQUENCY Of OCCURRENCE OF CEILING VEkSUS VISIBILITYUSAfIT TAC FROM HOURLY 0BSLRWATIONSA81 WEATHER SfktICE/MAL

SEAYION NUMOLR: 727855 SIA IO NAME: FAIRCHILD AfB WA PERI0D OF ECORU: 75 -84MONYH: AUG HOUR(LSr|. 15.U-17L3.

CEItLING 1.81l 17STTt MtS

IN I 6t G Gt E L G GL GE Gt GE U 5 t bt Ut tFtEE I 10 5 4 3 2 1/2 2 1 112 1 1IN I 5/4 5/8 1/2 5/b 1l'/ 1

NO CLIL 6 5.t 65. S 5.3 65.s 65.3 65.0 b5.3 b5.0 b5.3 65.3 6s.3 65. bS.3 9.7 65 .3 1 .3

Cu 200001 75.7 76.1 76.1 lb. 76.2 76.2 76.2 76.2 16.2 76.2 76.2 76.2 76.2 76.2 76.2 Tt./GE 180001 76.2 7.7 76.7 76.7 76.8 7b.8 76.8 76.8 76.8 76.8 76.8 7b.8 7b.8 a6'b 71.6 6s.,

GE .60001 7b.? 76.7 16 7 16. 768 76.8 76.8 76.8 768 76. 76.8 76.8 76.8 76.8 768 71.8GE 180001 77.3 77.7 77.7 11.1 b7.8 37.8 77.8 77.8 17.8 1.8 17.8 77.8 178 1.8 77.8 I.8Ul? 12000 an.1 80.5 80.5 80.5 80.6 80.6 80. 806 80.6 80.6 80.6 0.b 80.6 8.b a0.b sG.5

t |U000D 87.1 83.8 83.8 8.8 8a.0 88.0 88.0 88.0 8.0 8. 0 84.0 88.0 84.0 84.3 .40 84.JUE 90001 85.3 85.8 85.9 85.8 86.1 8b 8b.I 86. 86.1 6 8.1 85.1 b.1 . 8.1t 80001 8b.8 81 .5 87.55 87.5 897 877 87.7 87.7 87.1 87.7 87.7 81.1 8. 87.71 7.1 1 .1

Ut 7I00 88.3 896 89.. Z 6 89. 89.8 88. 89.8 89.8 e9.8 89.8 8.8 89.8 89.8 89.8 89.8 m.8Ut bo00 89.4 90.6 90.6 9.5 80.9 80.9 80..9 9.9 90.9 90.9 80.8 80.9 80.. 90.9 90.8 sU.9

6E 50001 8 2.6 94.:1 88. 1 98. 1, 98.3 98. 3 98.:3 98. :3 98. 3 98.0 94. 88. 98198 9.5 .Ut 85001 93.8 95.3 95.3 95.0 95.5 5 95 95.5 85.5 95.5 95.5 95.5 95.5 95.5 95.5 95.5 85.9

G NOG0I 95.8 97.0 97.0 97.3 97.2 97.z 97. 3 97. 87.3 97.3 97.1 97.3 97.3 v. .7.1 81Ut 35001 96.1 98.0 98.1 9. 8.093 9 983 . 98.89.4 98. 98.4 .8 98.4 98.4 . . 9.bE 30001 96.6 98.5 98.7 98.7 889 98.8 99.0 89.0 99.0 99.0 99.0 99.0 99.0 99.0 9.0 98.3

Ut 25001 986.7 98.6 98.8 98. 99.0 99.0 99.1 99.1 89.1 89.1 89.1 89.1 99.1 89.| t9.I 9.1Ut 20001 97.0 98.9 99.1 99.1 99.8 9.8 99.5 995 9.5 99.5 9.5 99.5 9.5 99.5 99.5 99.5Ut 18901 9 7. 98.9 99. 99.1 99.8 99.8 99.5 99.5 99.5 99 99 99.5 88.5 99.5 93.5 99.5 88.5Ut 15U01 97.2 99.1 99.8 99.8 99.6 99.6 99.7 99.7 99.7 99.7 99.7 99.7 99.1 99.7 99.7 99.1UE 12001 97.3 99. 99.6 99.6 99.8 99.8 99.9 99.9 9.9 99.9 99.9 9. 9.9 99.9 .9 '4. .

6E lOo!1 97.3 99.8 99.6 99.6 99.9 89.8 100.0 100.0 100.0 100.0 100.0 100.0 100.0 117'.0 IG. 130.0GE 9001 97.3 99.8 99.6 99.6 99 99.89 100 0 0 1000 00.0 100.0 100.0 OOO I 00.0 0.0 10 0 .aGU 8001 97.1 999. 99.6 99. 899.9 99.9 100. 100.0 100.0 100.0 1o.0 100. 100.0 1D 0.a 79. | ]90.01E 7001 91.3 99.9 99.6 99.6 99.9 9.9 100.0 1oo. 0 Ic0.0 00.0 100.0 100.0 100.0 100.0 I00. 10. 0Ut 6001 97.3 99.8 99 99 99.6 999. 9 100.0 100.0 100.0 100.0 100.0 100.0 do.0 170.0 I30.0 13D.0

UE 60n1 97.3 99.8 99.6 99.6 99.9 99.9 100 0 100 1 100.0 100.0 IO0 0 LI 0.0 730.3GE scO 97.3 99.8 99.6 99.6 99.9 99.9 100.0 100.0 10O.O 100.0 100.0 1G1.0 100.0 1o0.0 J 00.0 103.0GE l Ol 97.3 99.8 99.6 99.5 99.9 99.9 100.0 10.0 00.0 100.0 100.0 100.0 1000 00.n0 1000 100.0

Ut 2001 97.3 99 99.6 6 9 9 99.9 00. 100 00 100.0 10.0 O.0 1o.0 a00.0 I0.0E 1001 97.3 99.8 99.6 99.b 99.9 99.9 100.0 I00.0 100.0 100.0 100.0 100.0 10.0 100.0 10.0 . 3U.0

uE 01 91.3 99.8 99.b

99.6 99.9 98.9 100.0 100. 100.0 100.0 100.0 100.0 100.0 100.3 100.0 1I0.0... .•.......... • .... *............ °....... °....°......°o .... ... ................. o . ...... , . ° .. .... ... . ..

IOlAt NUMBER OF OBSERVATIONS: 910

B

tIO 8 IMAIGLOG 8kANCH PERCINIAGE FRE QUNCY OF OCCURENR., OF LEILINO ¥8.5U WI11LITA8ff IT( FROM HOURLY 086SRW I0N S

A1 iR AIRF t )RWkWICE /MAC

SIA II(IN NUHiR: 72786 561SATION NAZ: FAIRCH IO AFb WA PERIOD Of ECORD: 7b 4

MONTH A US Ho URISISIt IHJ(O (-JJ

(I IIN ISIIL IT IN SIATUIF MILES

tN I W LA (A 61 OF UA G G I GE GE G I L, L Gi III I ( t S .2 1 12 2 1 1/2 I /4 I 3/4 5/8 1/2 1/16 14

N 0 L IL 1 U1.9 69. 69.6 6V.b b9.b 69.6 b69. 6.6 b9.6 69.. b9.6 69.6 69.b 6. b9.6 c.b

(: :90001 78. 19. 1 19.6 79.6 79.6 9.6 79.6 79 9.6 9.6 19.6 19.6 9. : 9.6 7.oF 180001 19.0 79.4 79.7 79.7 79a7 79.1 79.7 797.1 797 79 7 79 7 79.7 79.7 79.7 19.7 7y.7(I 1601J(( 79.6 79.9 80. 80. 80.2 80. 80.2 80.z 80.2 80.2 80.2 80..2 80.2 a9..2 .2 j.,F 19000[ R.6 9 881.2 11.2 81.2 81.2 81 2 1 8. 81.2 81.2 81.2 71.2 81.2IL !2u001 88U.1 8 8 8. . T. 86.7 86.7 86.7 85.7 85.7 86.7 85.1 96.1 76-1 96.7

A 1O000 89.0 89.4 89.1 89.1 89.7 89.1 89.7 89.7 89.7 89. 8 1 89 9 89.7 8.7 79.7 .7IA V001 89.9 9.2 90. .90 90 90.6 90.5 90.6 905 90.6 90.6 90.5 90.6 S 0.5 V. 9 .SIA 80001 92.0 9 92.7 92.7 92.1 92.7 92.7 92.7 92.7 92.7 92.7 92.1 92.7 92.1 92.7 Y ."I 1"001 91. 4l 9.8 1 41 9 a..94.99.194.| 4 99. 9. 9. 94 99.1 94. 99.161 6001 99 .2 9.6. 94.8 94., 94.8I 1 94.8 94.8 94.8 a 94.8 94 .8 94.19 94. 8 94., 94 .8 9k4.8 949.8

(L 5f(uo0 9.6 97. 97.6 976 97 97 97. 97.7 97.8 97.8 97.8 91.8 97.8 91.8 91.8 97.8 97.8Gt 4500 9 6.9 91.6 9 8.0 9 8.1 99. 2 99.2 992 9a9.1 9e.0 986 98.s 9b.3 94.3 9b. I V9.3 99.3u 90001 97.I 98.1 98.6 9.7 98.8 98.8 98.8 98.9 98.9 98.9 98.9 98.9 98.9 98.9 V8.9 9b.9

"A 16001 97.6 98.6 98.8 98.9 99.0 99.0 99.0 99.1 99.1 99.1 99.1 99.1 99.1 99.1 99.1 99.SF 70001 98.1 98.9 99.2 99.9 99.5 99.5 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.6 99.b

(A 26071 98.2 99.0 99.4 99.0 99.6 99.6 99.6 99.7 99.7 99.7 99.7 99.1 99.7 99.7 99.7 99.7.[ 20001 98.6 99.4 99.1 99.8 99.9 99.9 99.9 100.0 100.0 0 100.0 100.0 100.0 100. 0O.0 110.OF 18001 98.5 99.4 99.1 99.8 99.9 99.9 99.9 100.0 IO.O 100.0 100.0 100.0 100.0 0 0.3 ) 00.0 900.j6E 10UO1 98.5 99.4 99.7 99.9 99.9 99.9 99.9 100.0 100. 0 100.0 100 100.0 I0.0 100.0 Io0.0 100.6F 12001 98.5 99.4 99.7 99.8 99.9 99.9 99.9 100.0 100.0 100.0 io0.0 100.0 103.0 100.0 100.0 1oo.2

6F 10001 98.6 99.9 99.7 99.8 99.9 99.9 99.9 100.0 1 0 00.0 UO. 100 0000.0 10.0 0.0 10.U. 9001 98.5 99.4 99.7 99.8 99.9 99.9 99.9 100.0 100.0 100.0 100.0 00.0 100.0 100.0 100.0 . j.0GE 8001 98.6 99.4 99.7 99.8 99.9 99.9 99.9 100.0 00.0 100.0 00. 0 10t. a 00. 00.0 00.0 1:J.aGE 7001 98.5 99.4 99.1 99.8 99.9 99.9 99.9 100.0 100.0 100.0 100.0 100.0 00.0 1O0.0 IUO.0 100.0GE 6001 98.5 99.4 99.7 99.9 99. 99.9 99.9 100.0 100.0 100.0 10.0 100 .0 1a0.0 1000 1o .0 133.D

oF 6001 98. 99.4 99. 99.8 99.9 99.9 99.9 100.0 ]00.0 100.0 1 00 a 00.0 O10.0 o0.O Li.0 ID3-.6E 4001 98.S 99.4 99.7 99.8 99.9 99.9 99.9 100 0 100.0 100.0 100.0 |100 0 0.0 0. 100.0 103.2OF 7001 98.6 99.4 99.1 99.8 99.9 99.9 99.9 100.0 I00.0 100.0 100.0 100.0 I00.0 0. a D 130 3.2OF 2001 98.5 99.4 99.7 99.8 99.9 99.9 99.9 100 .0 100.0 JO0.0 100.0 00.0 100.0 O0.0 100.0 I10..

(f 2001 98.5 99.4 99.7 99.8 99.9 99.9 99.9 100.0 100.0 00.0 100.0 100.0 to0.o 17.0 00.0 13 .2

OF 01 9.S 99.4 9.7 99.8 99.9 99.9 99.9 100.0 100.0 100.0 00.0 100.0 000 00.0 0.0 13.3

....... ........ * ...... °°..... ......... .... .........*..*. .... ......... *... ........... ...... *................. ............. . *

TOTAL NU8LR Of O8SEVATIONS-. 930

I

.1&L24 CIl39610120 BRANCH 'I 8Ct NY b FW3UE NCY OF 0CCUR3t % Of LEI I Nf YESW VIbILIIUSAFLTAC FOM hOURLY 08St 81AI OS

S AIR WEATHER Sf w I CE/MAC

STAI4ON NUM8R: 78S5 ST IION NA4: FAIRCHILD AF8 WA P[OU Of RE C0w r5-b4MONH : AUo HO U Q'ILSIi: ZIU0-23(0)

IN GE G GE 03 GE bf GE Of GE E l ul u I 03 AFEET I 0 6 5 4 3 2 I/ 2 1 112 1 1/4 3 S14 5/8 11.7 "/1b 1/ 4

......... ...... . ......... ,..............o..... .............. . . ..... .............. ..........................................

'1O CEIL 1 77.0 71.4 77. 1.4 77.5 77 .5 7 7.6 71.6 77.6 17.b 77.6 77.b 77.6 77.b 77.6 77.b

3: 20000 81.0 83.4 83.4 81. 83. 83.5 83.7 83.1 81.7 81.7 83.1 83.l 81.1 41.7 85.7 8 1bE 18000 81.1 81.: 8.6 85.6 83.1 8.7 83. 11.8 838 .8 1.8 83.8 81.T 83.8 83.8 ,8 3.8UE boo 1. 84.0 84.0 84. 84.3 8.3 84.2 84.2 84.2 8.2 844.2 8k.. 84.2 8..2 4.2 44.2GE 14001 84.9 85.4 86.4 86.4 86.6 8,5. 8 5.6 86.6 8.6 86.6 al.6 85.6 8. 6 86.6 b66 85.6Of 120001 86.5 6.9 86.9 86.8 87.0 87.0 87.1 87.1 47.1 87.1 87.5 87.1 87.3 81.3 47.1 17.1

uL 10000 90.G4 91. 91.0 91.3 91.3 93.1 91.2 9.2 93.2 91.2 91.2 91.2 9.2 91. 93.2 91.29 9000 93.8 92.4 92. 4 92. 92.6 92 92.6 9':U 9 92 2 92 6 2. 2.6 92.6 92.6 92.b

bE 8000 92.6 91.1 93.3 93.1 93.2 93.2 91.3 91.3 93.3 93.3 93.3 93.3 9.3 91.3 93.3 93.E 7000 94.6 95.. 96.3 95.. 9S.2 95.2 95.3 95.3 95.3 95.1 96.3 9.1 96.3 96.1 96.3 95.1

UE 60001 95.2 95.8 95.8 95.8 95.9 95.9 96.0 96.0 96.0 96.0 .96.0 96. 6 9.0 9b.3 96.0 96.3

6[ 6000 96.6 97.1 97.1 91.1 91 2 97.2 97.4 91. 97.4 97.4 97.14 97.4 9;. 97. 97.4 91,3E 4s00, 97.2 98.0 98.0 98.3 98.1 98.3 98.3 98.3 98.0 98.1 98.3 98.3 98.5 98.1 98.1 96.3GE 40001 97.6 9B.6 b 8.6 98 . 98.7 98.7 48.9 98.9 98.9 98.9 98.9 98.9 94.9 98.9 48.9 9b.v06 Sn0 97.7 98.7 98.1 98.7 98.8 98.8 99. 0 9 9N.0 99. 0 99.0 99.0 49.0 9Y. U v.2 99.a(F 3000 98.3 99.2 99.2 49. 9 9. 99.4 99.6 99.6 99.6 99.b 99.6 99.6 94.6 99.b 99.6 99.

OF 260 94.3 99.6 99.6 99.6 49.6 99.6 99.8 99.8 49.8 99.8 49.8 99.8 99.8 99.8 99.8 99.8('E 200 98.4 49.6 99.6 99.6 99.7 99.7 99.9 99.9 9 9 9.9 99.9 99.9 99.9 99.9 94.8 9 .9

2r 1001 98.4 99.6 99.6 99.6 99.7 4. 99 99.9 99 99.9 9.9 99 9. 99 .9 99.9 99.4

9E 16u0 48.4 99.6 99.6 99.6 99.7 99.7 99.9 99.9 99.9 99. 9 99. 99. 99.9 99.9 49.9 99.9GOl 122UO 98.4 99.6b 99.6 99. 99.7 99.7 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9 9.9

Gr 10100 98.4 99.6 99.6 99.b 99.7 99.7 99.9 99.9 49.9 49.9 99.9 99.9 99.9 99.9 9 .9 49.9

GE 101 98.:4 99.:6 99.:6 9.:6 94. :7 9.7 99.:9 99.: 99.:9 99.:9 99.:9 944.:9 99.9 99. 9 9 946E 9001 98.: 99.6 99.6 99.6 99.7 99.7 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9 999 99.9bf a800 98. 9 "6 99 6 99 6 99 1 99.71 99.9 199.9 199.9 199 9 99 9 99 9 99 .9 99 .9 99 .9 9yoy

GE 7U10 98.4 94. 99.1 99.1 99 99 8 100.0 300.0 300.0 I00.0 120.0 100.0 100.0 100. I00.0 1.a3d 6001 98.4 99.1 99.7 99.; 99.8 99.8 100.0 . 1000.0 110. 20.0 100 . U 100.0 I30.0 100.0 10 1.3

O[ 6001 98.4 99:7 99.7 99.; :9.8 99.8 300.0 3012.0 30.0 100.1 300. 0 100.0 00.0 300.1 3UO0. 132j2.E 400 98. 4 99.7 99.7 99.7 99.8 99.8 300.0 100.0 120.0 300.0 300.0 300.0 03.0 300.0 00. n 1oo .

06 301 98.4 99.7 99 99.7 99.8 99.8 I00.0 100.0 00.0 100.0 0 00.0 100. 300.0 100.0 10. 0 1.OUOF 200 98.4 99.1 99.7 99.1 99.8 99.8 300. a 00 10 00 00.0 300.0 100.0 100.0 10.0 10.0 312.0fE i00, 98.4 99.1 99.1 19. 49.8 99.8 100.0 100.0 100.0 300.0 300. 0 3100.3 00.0 300.a 10 .0 100.3

or .. 98.4 99.? 99.7 99.7 r 99.8 99.8 100.00 100.0.300.0 300.0300.0 100.0 020.0 10.3 I0.0 103.1

308L NUMBER OF OBSERVATONS: 910

S

GLOBAL CLIMAILOGY RWANC H ELRCIAGE F6100NC1 OF OCCURRENCE OF LIL ING AEUS VISIb LI6IIUSAt I TAt FROM 900UL OSLEEYrION$

*18 .LAT9ER SERVICE IMIC

3IAl104 9uM878: A218S5 SIAVION NAlE: FAIRCHILD AFB WA PER10U OF RECORD: 17-4909I3: AU H URS3lSI4: ALL

... ... ... . °.. ... ... ... ... .. ... ... ... .,.. ... ... ... ... .. ......... . ........................................CE ICING 9191R1LC[ 3 N 14 518307 MILES

IN I GE GE GE GL G OE GE GE GE GE GE GE L1 01 GE uf

FE l I 30 t 5 3 1 21 /1 2, ! 112 1 1 /, I 53/8 1/2 s/t 1/ /

Nd C[lL I .A 709. 10.1 1I.I 10.2 10.2 70.2 10.2 70.2 70.2 10.2 10.2 ?0.0 UZ70.2 19.2 7J.z

S200001 16.6 7.1 77.2 71.2 71.1 1.3 77.3 77. 71.3 71.3 17.4 77.4 77.4 1. 1 7.. 17.GE 180001 16.9 71.9 77. 775 7.6 77.6 17.6 77.6 71.6 17.6 77.6 77.6 17. u.n 11.7 7.7

GE 6c0a 17.2 71.7 77.6 7. 77. 9 7 7.8 7 77.9 77.9 71 77.9 77.9 71.9 77.9 71.9 .1.9

GE 14000 78.3 78.8 78.9 l. 19.9.0 79.0 79.0 79.0 79.0 79.9 79.0 79.0 19.0 79.0

GE I2zOOI 81.6 82.1 82.2 82.3 82.4 82.4 82.4 82.4 82.4 82.4 82.4 82.4 82.4 82.4 52.4 8Z.4

U[ 100001 85.4 8u.0 86.1 86.2 86.3 96.1 86.9 86.4 66.8 86.4 86.4 86.9 86.4 80.4 6.4 8.:

G E 9001 86.9 87.5 87.6 87.5 87.8 87.8 87.8 87.8 67.8 87.8 87.9 87.9 87.9 87.9 81.9 47.9

bE 8(1001 8 .8 89.5 89.6 89.1 98 89.5 89.9 89.9 89 9 8.9 89.9 89.9 89.9 8 99 89.9 89.9

GE 7000 90.9 91.3 91.9 91.4 91.6 91.6 91 .6 1.6 91.6 91.b 9.6 91.6 9b1. 91.6 91.7 91.7

GE 60001 93.4 92.4 92. 9..b 92.7 92.7 92.8 92.8 92.8 92.a 92.8 9.8 92.8 92.8 92.8 9.8

6E 50001 93.3 94.3 94.2 94.8 94. 94.3. 96.6, 94.6 941. 44.6, 9 4.:6 94.6 9 4.:6 914.6, 94.6 .GE 45U00 93.6 94.7 94.b 91..9 95.1 95.1 95.1 95.1 95 95.1 5. 2 9S 2 95. 99.2 95.2 95. 2GE 4O0 99.1 9S.4 96.1 9.1 98* 96. 3 96.4 96.4 96.4 96.4 96.S 96.5 96.5 96,5 96.tS 9b.S

G E 3OOJ 95.0 96.3 96.4 96.5 96.1 96.1 96.8 96.8 96.8 96.8 96.8 96.8 96.8 96.6 9.8 96.8

GE 30003 95.6 971 97.3 91.3 97.6 91.R 97.6 97.7 97.7 97.7 97.7 97.7 97.7 91.1 97.7 9171

GE 25u0I 95.8 97.3 917.5 976 97.8 97.8 41.9 979 97.9 97.9 97.9 97.9 97.9 97.9 919 917.9

GE Z0001 96.3 97.6 97. 91.9 98.1 9. 9 982 4.2 98.2 99. 98.3 98.0 98.3 :8. 9b.3oE ISUn 96.3 97.6 91. 97.9 9.2 98.2 9.2 98.3 98. 98.3 98. 983 98 98 983 9b.3

L I5001 96.3 97.9 98.1 98.2 98.5 96.5 98.5 98.5 98.5 98.5 98.6 98.6 98.6 98.6 98.6 94.bGE 12001 96.6 98.3 98.5 96.6 98.8 96.9 98.9 98.9 98.9 98.9 99.0 99.0 99.0 99.3 V9.0 9 .3

GE 10On0 96.7 98.9 98.7 96.8 99. 1 99.3 99.2 99.2 99.2 99.2 99.3 99.3 99.3 99.3 Y9, 993

I.E 9001 9.7, 98 98.1 98.8 99.2 99 99.3 99:3 99.0 99.5 99.s 99.3 99.3 99.3 99.4 99.4GE 80 96.8 98. 97 9 99.3 99.3 99.4 99.9 99.5 99.5 99.5 99.5 99.5 99.5 99.5 99.6

i.E 7077 96.8 98.7 98.9 99.1 99.4 99.4 99. 9 99.6 9.6 99.6 99. 6 99.b 99.6 99.6 99.6 99.1GE 6071 96.9 98.7 99.0 99.3 99.5 99.5 99.7 9.1 99.7 99.7 99.7 99.' 99.7 99.7 99.8 99.8

E 501 96.9 98.1 99. 99.2~99 99 99.8 99.8 99.9 99.9"E 6001 46.9 98.6 99.0 L 992 99.6 99.7 99.8 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9

(It 30I 46.9 98.8 99 99 99 99.7 99.9 99.9 99.9 99.9 99.9 99. 9 99. 99.9 130.3G 2o7J 96.9 98.8 99.3 99.2 99.7 99.7 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9 luO.0 1o0.3

OF lUo 96.9 98.8 99.3 99.2 99.7 99.7 99.9 99.9 99. 9 99 99.9 99.9 99.9 99.9 L030 10.3

.! 01 94.9 96.8 99.1 99.2 99.7 99.7 99.9 99.9 99.9 99.9 99.9 99.9 99.9 94.9 100.0 |, .0.o...... .. . o*. . . . . . . . ......... . ,. . . .. ,...... 9.oo .. V .*.. .... 9 9 : . . . . . . . .............. .......

1OTAL NUMER OF OBSRVATIONS: 7440

-

8L 0AL CLIMATOL0GY 8RANCH .kC[dIAG1 F kE.UENCY OF UCCURRENCE OF CIILING V(RSUS V ISIbLIIyUSA#1 TIAC FWO HOURLY OBSRVATIONS

AIR 1 E AIH9 SRVICI/IMAC

5IAT ION NUMBR 785 STAT1ON NA1: FAIRCHILD AF8 WA PEP00 .F RECORD: 75-84

MONTH StP HOU RS(LSI1. I O00-020 U... ... ... o . ... ... ... °.o °.. . . ... ... ... ° . ... ... ... ... ... ... .. .............................................

IN G[ [E GE G G GE08 G[ 6f G[L G( GL [ GL L" 01 .ftI I 1 0 6 0 s $ /.1 2 11 / I1 /4 /4 / /8 1I12 5/ I (/ 8

NO CII L 1 4.1 78.2 14.4 74.b 74.6 71.1 14.7 18.8 18.8 14.8 78.8 74.b 74.8 74.8 14.8 14.b

[.1 20000 76.3 7b.,4 16.1 76.8 7b.8 16.9 76.8 71.. 77.0 7. ,. 11.U 1.0 1U 1 71 11.J(.8 1001 16.6 76.7 16.9 77.0 11.0 11.1 17.1 77.2 17.2 17.2 1.2 71.2 1.2 11.2 11.2 17.2

GE 160001 76.6 76.1 76.9 77. 1.0 77.I 1.1 77.2 2 7.2 17.2 71.2 17.2 71.2 z1.7 11.2

[E 1486uO 17.3 77.4 717 71.8 11.8 11. 71.9 18. 78.0 7. 8..0 18.0 i I..j IM.0 10

1. 12000 78.4 78.6 78.8 78.1 78.9 79. 19.0 79.1 79.1 79.1 79.1 19.1 7.1 70.1 79.1 10.

68 lo000 8.9 84.0 84.2 84.3 8.3 848 8.1 81.6 6b4: 81.6 88.6 88.6 18.6 8.6 8I.6 I8.:[f 90[.0I 86.1 86.2 86.4 86.6 86.6 86.7 86.7 86.8 86.8 86.8 86.8 86.8 a . 8.8 86.8 1.8[ c 80001 8.8 87.9 88.1 88.2 88.2 88.5 88.3 88.8 88.4 88.4 68.4 88.4 88. 8.8 84 b.8 8.

6C 70001 89.2 89.3 89. 8.7t 88.1 89.8 89.8 9 9 90.90 90.0 9 0.0 90.0 9 .1 9.0 a . 9.0

u[ 60001 90.6 90.8 91.0 91.1 91.1 91.2 91.; 91.4 91. 91.4 91.4 91.4 91.4 91.4 91.8 91.4

G co00l 92.7 93.1 93.3 90.8 93.8 91.6 93.6 93.8 93.8 93.8 83.8 90.8 93.8 83.8 83.8 81.808 80SL. 83.1 98.2 98.6 98.7 98.1 98.8 98.8 95.0 95. 0 90.0 . 0. 8. 05.0 80.0 9.

[ 8006 98.0 90.0 90.3 95. . 1 .8 9. 8.6 8.8 9s 95. 6 8 90.8 9.8 85.8 95.8 05.8

UE 35001 88.7 90.3 95.7 95.9 80.9 96.0 96.0 96.2 96.2 96.2 96.2 86.2 96.2 86.2 9.2 88.2

k[. 30001 94.7 95.6 90.9 96.0 96.1 96.2 96.2 96.8 96.4 96.8 96.8 96.4 06.8 86.8 96.8 9 y.8

u. 2M00I 90.3 96.. 9b.3 96. 96. 96.1 96.7 96. 9 96.9 96.9 96.9 96.9 96.8 .9 .9 Y5.86[ 20UO 90.2 96.1 96.8 96. 96.8 96.9 96.9 97.1 91.1 97.1 9. 1 .1. 7.1 9;1. 9.1 1.1UE 18.01 9S.2 96.2 96.6 96.8 96.8 97.0 97.0 97.2 97.2 9.2 97.2 97.2 97.2 97.2 87.2 .7..

1[ 10001 99.8 6. 97.2 9 9 9 97.9 98.1 98.1 98.9 9.1 98.1 8.1 98.1 88.1 98.1

G[ 12 00 90.8 97.1 97.8 97.7 98.0 98. 9 98.1 98.33 9938.3 8. 98.3 y.1 ..

.E WONO0 v8.6 97.2 97. 1.8 8. : 9:1 98.2 9. 2 98 .. 9 8 8 0 9 9.8 98.8 I8.86[ 900 95.6 97.2 91.6 97.8 98 8.2 98. 988.- 98.4 98.8 98.4 8.4 98.4 7.4 88.8 0h.4

b 8001 90.6 90.3 97.7 97.9 88.2 96. 3 8.3 98. 6 9 98. 86 98.6 88.6 98.6 98.8 8.8G[ 7 UO1 90.6 97.0 97.1 81.8 98.2 98.3 88.3 98.6 98.6 88.6 98.6 88.6 88.6 98.6 89.6 88.8[8 6303 95.9 97.8 98.1 98.3 98.1 98.8 88.8 98.0 99.0 98.0 9.0 99.0 9.0 9.0 89.0 9..

00 90.9 97.8 98.2 98.9 98.8 98.9 88.9 99.1 89.1 89.1 9.1 89.1 J 9.1 9,1 8.16. 6003 90.9 97.8 98.2 98.4 98.9 99.0 89.0 99.2 99.2 89.2 89.2 89.2 99.2 98.2 88.2 88.2

([ 3DO 80.9 91.8 98.2 98.1 99.1 98.3 89.3 99.6 99.6 99 99.6 99.6 88.6 88.6 98 88.6

[ 5 201 9,9. 97.8 98. 2 98.7 9.1 99.3 99.3 99.7 99 99 99.79 9 .7 88.1 9.1 9.1

[ 200 1 90.9 97.8 98.2 98.1 999. 1 99.3 99.3 89.7 9.1 98.1 99.7 99.1 89.1 89.7 99.1 13...

[ O 9s.9 97.8 98.2 98.1 99.1 99.3 99.3 99.7 99.1 88.1 89.7 99.7 89.7 9.7 99.7 10.0

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USAF I AC F 0 M OUPLY OSEfRVAI ION

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S I A I N NMHtQ: 12185 STAI3ION NA49: F838CslD AIR VA PLRIO F C 6COPi): IS-'

MONH1: SfP 10U Q S C 315S>0 I [ ,

([[I 348 A353831ITY 14 SIATOIE MILES

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"t 120001 14.1 16.4 76.8 7.8 7.0 11.3 1.4 17 .4 7 . 17.8 1.n 11. 1.39 7 1 .I h .1

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CL 80 8 4 11 1 86. 86.4 86.4 6.8 86.4 61.2 81.2 I1.2 A1.74 87 .1 87. 7 . i-.] It.]

88 1d'73 89.0 88.4 88.v 88.4 84. 8 86 89. 8g. 90.0 4oU 92 .1 4j 43. ,

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O 91 4 91 1 :0.. 9 '. 43.3 53.7 93.8 42.3 42.3 I2.3 :2.3 4'.6 42.b 92.1 4.4 4.0 .1.9

,E 4U080 43.8 92.6 92.4 92., 41.2 9.3 1.1 2 1 4 93.1 94 .3 94. 9.3 9. .4 4.6 s4.1

bE 35001 92.1 93.2 91.6 41.1 94.0 94.3 94.4 99.4 94.4 94.9 94.9 94.4 44.3 S.g 40.1 9 4.3

3E 24603 419fl 93.9 4. 94.1 94.1 94.8 44.3 90.3 44.3 44.3 99.4 44.6 95.1 95.4 47.3] 41.3

11 200 1 9 .1 94.2l 9 4.6 94. 1 044.0 95.3 45.4 94 .4 94.4 90.1 94 40.4 46,] 4u.2 46.1 .u E 3G0 91.1 44.2 44.? 94. 1 40. 94.2 94.6 94.6 90.6 44.8 96.0 6.] 9s.3 9s.14. c d

b 3 'l(1 91. 94.4 94.4 4.] 0.4 .9 94 4 9 6 46.7 4.? . .1 ,. .

It 32603 941 94.4 954. 90.3 40.6 94.1 96.0 90 6 9 6.0 96. 96.4 96. 964. 96.3 46.4 .8

bG 3 I0S0 91. 94.4 94. 9 5. 90. 95.1 46.0 9 9.0 9. 96..s 96.6 47.8 '1, . '6.1

11 1200' 93.6 94.6 95.3 94. 90.7 9S 9 9 6.3 96.3 96.3 9.6 9 46.? 96.. 7.3 61.jI

GE 8 1003 9 9.8 46.2 96.3 96., 1 o S : : 96. 46.7 96.4 9 51 91 1.' .4 41.6L, 00 44.2 9.4 6.]] 96. 96. 46.1S 9b.0 961. 67.0 9.2 Y f7. 4.4 Y6 I 19b 7.3 1.EUflj 44.2 '85.4 96.0 . 9.6 9b 6.? 9 7 9b.0 4 9y 4 1 9. 1.4 4I.

I 0,01 94.1 44.6 96.3 9I.4 96.4 . 91 .0 91 .0 91.3 91.6 97.6 4 7. . 4n.3 44.2 -. v

,| 203] 44.7° 94.4 96.? 91.2 91.9 98.8 48.6 98.6 48.6 98.8 99.0I 94.? 94.3 49.1 49.6 11.?i33 94.7 90.4 46.1 979.2 4.91 99.3 89.2 S..4 941 / ),.J

03 44.7 4 4946.? 9?., 49 96. 9 8. 98. 98. 9.4 94. 44.3 49.2 4I .I 19v 3..4

I, 'I 1 9 ., 91 .9 98oi 9 7.J I 99.7 9 9 0 9 .b 6 9 " b 9 .b 9 .V " 4. 1 99 . 1 9 94 g .4 , 7 -

I31A1 NMHL P(IF 4SfEVATION',: 910

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.. .... . . . . .... . ... . . . . . . ..a

: LIA k'I AI L G CN ( O[ L N I .A t f H i oL N CY F UC L IRP E N[ L ) ,.1 ] 0N FL , V S b L T

4'I~ t .€ HOUPL Y OB s kv GTN'L , 8 t t A84( 33 kL6l~ 767 ...01 0V I(38' 433 /M1A(~>8.SV 81

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A f 7 Wpt 1: 5,-I4

M ) Tu H t77 MILES

I I St S7 1 r t I C, L G t7 0 IE tL .6 0L ,7F f t I 130 4 1 17 21 2 1/2' 1 1/4 1 7 / b2 I/2 S/ It b /4

N 0 It I 1 I .9 64.0 6, 4. b4.2 b4.1 64.1 6 b .7 4 64.8 b4. 64.9 6.9 b9 6.bV 653 b6.

I12/oll 67.2 69.7 69.6 64.4 7[1.3 10.3 70.4 70.7 111.7 70.7 70.8 70.8 70.8 73n 7, 1.9 7,.1. 1;1 .6 7.0 70.3 71.? 73.4 71.4 10.8 73.0 73.0 73.. 71.3 11.1 712. 7 . 77.2 73.4t7> 360001 67.8 70.2713.1 Tc.. 70.7 70.1 71.013.273.2 13.2 72.1 7b.7 73.1 71.7 17.9 73.7

r, 3101 64.5 71.8 72.3 72 . 7.4 2.1 72.8 11.0 77.0 71.3 77.2 7.2 7.2 71.2 1.f.1 A I.L7 3.00 1 72.7 71. 7 L. , 15. 7 '. 76.1 76.4 1 16.1 76.8 76.9 4t. 7,.4 71.9 77.?] 77.2

57 300001 77.2 80.4 80.1 80.4 8( . .883.4 63.6 83.t 83.6 73.u 83.8 8. 8.161 971(141 781.7 83.4 83.8 83., 82.2 82.2 82.7 827.9 82.9 81.0 87.3 81.1 81.3 87.3 41.1] 41.

41 8030 82.2 8.0 8 8 8 86.2 86.4 86. 0 7t.t 86.7 96.1 86.7 86.7 46.4 47.3ut 70001 7.7 86.6 87.0 8. I b7.6 81.7 88.3 8,°. 88.1 88.4 88.6 88.6 88.6 88.t 88.8 89.3

r I0001 86.3 88.0 88.4 98, 84.1 1 9 ..3 8.b 89.8 84.8 89.9 40.0 90.0 3.0 93.3 9.2 4.y4

E 51 3 1 8S.9 A88 89y.2 89.1 84.8 89.9 904 90.7 40.7 909 1 : 90 ( 904 93.9 9J.9 93.7 43.647 tS3L) .6.2 89.3 89.b 84 .7 401 90. '9. 8 91.0 9. 91. 91.2 912 12 93.2 93.7 9.,'Ut 400o h7.4 90.4 90.9 91.3 91.4 93.6 42.3 42.3 42.0 92.4 4 .? 92. b 9 .b 2. 41.0 . .2cL "I'll' 81.8 90.8 3.2 931. 91 .8 41.4 42.4 42.1 92.? 92.8 .9 9 92. 9 9 2. 91 9 . 43 9 3.bI7 .U301 4 q. 93.1 93.6 9., 92.4 92.6 93.1 91.1 93. 1 9 4 43.6 93.6 4. 91.6 44.0 94.2

kl, 260 89.0 0 2.3 92b 42.7 4.:2 9 1 :1 '19 49 94. 14.1 94 .2 44 .4 94.1 '194 94.1 448 95.3bE 200 01 89.0 92.3 Z2.6 q27 47.0 91.1 49.9 91 9 4 3 4 4. 94.3 94. 94.7 94.8 96.3

67 ~ 18.1890 9.3 4.6 42.7 41.2 41.1 91.9 4.3 4431 .2 9. 4. .3 4.7 47 448 9.8Lr [ 1 92. 6 .1 9 2o 9 9 9. 9q. 94t 94.2 99o 9o . 3 . 94.3 94o8 y 5 o j

'I3 101 89.17 42.3 42.b 2.1 97.2 91.1 41.4 94. 94. 94 2 4.7 94.7 94.1 94.1 4 .8 9s.DI 1201 84.3'll 92.3 92.7 92. 9 9 . 97.6 44.3 44.7 44.7 44.4 44.6 94.6 94.6 94.6 95.0 95.2

7> 31001 89.4 92.3 41.2 97..1 47.4 4.0 946 4 46 46 96.0 95.. 4.4 96.

E 9001 89.6 9.4 . 14 9 2 94.8 9. .0 46.1 915. 2 4 5.2 96.2 95.2 96.7 95.4(t aufli 90.0 91.1 97.4 94.3 8 4.8 1 94.4 4.6 46.8 48 .8 95 . 9 96.0 96 .0i 96.01 96.0 496.4 46.7... 700 To 40.71 9. 43. 9.3 44..6 9s6.2I q 6.3s 96.0 96f,.2 b.2 6.2 6.3s 4. 4 46b. 4 96 .4 96b. 4 46b.9 91 .3Ir(7 6 1, 0 90.1 93.4 94.4 94 . 1 914.1 96.4 46.3 96.7 96.1 96.4 4 9b 6.6 9b.6 96.6 46.b 97. n 1 7.2

[,t 1 a 90.1 91 44.,

4 44. .6 9 9 6.11 4.1 46.6 46.6 96.7 96.8 9.8 968 46 4 ,7.2 97.but 400I 91.7 94.0 94.t 915.3 9.0 . 9b 6.8 47.0 47.0 97.1 41.4 97.4 97.4 974. 94 48 " .747 1001 0 94. 9 4.b 9 . .7 96.4 47.2 97.b 47.6 97.4 48.0 98.0 98.0 98.0 43.s6 4.3

20t 90 4 9 .6 96.3 96.7 96.4 97.2 9.6 4.6 97.9 98.0 98.a 48.0 4.3 9.7 4.f3 1(00 1 .7 9. 0 94.6 96., 9b.1 96, .4 97.2 47.b 1,.6 97.9 98.1 48.3 98. 98.3 44.4 3 3.3,

07 01 90. 7 94 . 9.6 9. 196.7 9b.4 7.2 47.6 47.6 97.9 98.31 98.3 44.3 4.3 98.9 ,33.0J

10O1 AL NOMM t W OF OB".R'VATION .; 9.1030847897080870S 3

Bl i l d ll Immm m l~HH

ULUAL L IMI IUL )wY Ilk A NCi ItRCt NTAG I6kL UtNL Of UCCUOAI NCF OF L([ IN E, WFNSSU VI 1IILI4yUJAf IT AC W 0M HOUL y OwScLA A I OSN S

A Ikw ATHEP A I]CI./MAL

IlATION NUlhtL: 727459 'ATATIO. Afl 1 [ A78A p161CC 01 ItC31'At: 7A-BADTM0NIH: 0CT MDUQIS I:1 21 o0-2l3j

CiiiINO VISIBILITY 1 U SIAE I ILLLSIN I 11 1, f L W GL SA, G GE S G UL St (f , ,LEl I O 6 5 A 1, 2 1 I/Z 13/4 1 1/4 9/8 1/2 9/it 1/.

*0 c II I 9 9 9 9.11 U. I 2.1 60.5 60.5 b0.s 6 .8 4U.9 61.2 Z 6. 61.2 63.9 61. t.7 1,I

*1 2o 0 6.2 64 *9., Y5.Z 65.6 6.6 69.8 69.8 6,.9 bt.2 t.? 6t.1 bw6 tt.* I t.8 bt.I

8i 34000 b4.9 65.7 695.S 611.B t6.1 66.1 t*.6 66.t 66.7 67.0 6T.0 67.0 671 L.3 ,1.5 t>,.2L 160001 69.1 69.8 66.6 66.4 66.9 6*.9 66.7 tt.T 66.8 67.1 67.3 67.1 b1.4 67.4 7.t 45 .1

. I 0 1 66.7 67.4 6. .b 67 .6 68. b8b It, 8 0 68 1 8.7 6$ I . B168.1 8 6 .b9.0 t.i . 64 .b 8

Sr 20U0 111. 72.0 12.3 2. 72.7 72. 7 72.9 1.9 73.0 l.3 13 .3 71.1 1T.? 73. 7 2. 17.5

Ut 1000 7.8 76.w 76.8 76.9 71.2 77.2 T1.9 TT.4 17.9 !7.8 77.8 77.8 :9.2 78.? 18.4 l7: 14A 9001 77.9 78.8 78.9 78.6 79.0 9-2 79.2 79.4 79.1 9.7 79.7 80.0 83.3 wQ. .

6t 80001 0.2 81.4 81.6 8.6 82.2 82.2 $2.9 82.9 82. 82.8 82.8 82.8 83.1 R .I wT. 4w.3

UE 'conl 84.! 89.9 8a.7 89.7 88.2 ' 2 . 8b.9 8,.9 66.6 86.9 86.9 8b.9 87.2 MT.2 AT.4 14..

U t 00 86. 8.B 8.18 81.8 88.9 88.4 88.6 88.b 88.7 89.0 89. 0 89.0 h9.w 689.4 w9.t b .2

wE 9501 a.O 89.8 90.0 90.3 90.9 90.5 90.8 90.8 40.9 91.2 91.2 91.2 9i.5 93.9 9i.1 ?. .UtL 4900 88.6 90I.9 90.6 9 .9 93.7 91.3 91.5 91.9 41.6 95.4 91.9 9i.9 92.1 97.1 42.9 3.1GE 80201 $8.9 90.9 9"i1 93.! 91.b 91.6 91.8 91.8 91.9 92.1 92.T 92.1 42.t 92.4 92.8 9i.

i 500 89.0 91., 91.1 93.4 91.9 91.9 92.2 92.2 92.3 92.6 92.6 92.6 92.9 9.6 91 98.4

sot 100 89.1 92.0 92.1 92.4 92.9 92.9 9 .i 91.3 98.2 91.5 9T.9 97.S 9.9 91 . 9 .I 94.8

l 2 u0r 89.8 92.2 92.4 92. 9 90 91.0 91.2 91.2 91 .8 98.7 97.1 98.1 4.U 9 94:j .2 44.9

Ut 20001 90.2 92.9 98.1 97.2 48.8 91.8 94.0 94.0 94. 94.4 94.8 94.4 # 94.1 4.9 .7

t 18001 90.2 92.9 91.1 91.2 98.8 91.b 99.0 94.0 94.1 94.4 94.4 94.4 94.7 9.7 94.9 95.7

".7 901 47.4 91.3 91.4 9T.o 94.1 94.1 44.8 94.4 94 94.d 94.8 94.8 49.? 99.? 99.4 9b.i

6E 3 11 90.6 91. 1 91.7 91.4 94.4 94.4 99.7 94.7 948 99.2 Y9.2 95.2 99.9 45.5 s 5.7 94.9

IF ili0fli 90.6 9'.9 91.4 94.3 4.7 94.7 91i 99.1 49 . 99.5 9%.9 99. 9.8 9Q 9t.0 qt.b51 9[O 90.9 91.8 9 e 94. 95.! 99.3

9

5 4 95.4 99.9 995 8 95.8 99.8 96.3 96.3 .71 I

SE Ol 41.1 9 94.0 4 94. 9. 9. 95.6 96.6 95.7 96.0 96.0 9b.U 968 91 96.6 971101 93.2 98.1 94.6 99.84 95. 95. 95.8 99.8 9S.9 96.2 96.2 96.2 96. b 4t f 96.8 97.9

1[ 61 l I 14.2 98.8 95.3 95.1 95.1 96. 9b.L b . 96.9 96 .5 96.5 96.8 9,.8 47.0 47.7

bI I uOLi 91 94.b 95.s3 95. 9. I 9b.! 96.5 96.5 96.6 96.9 9 6.9 96.9 97.? 47.2 91.4 6 .'

bt 4011 9I.T 94.1 9S.4 95b 96.2 9b.2 96.6 96.b 91.7 97.0 97.0 97.0 971' 91. 5 98.1t 1601 41.T 94.9 99.6 95.8 96.9 96.9 96.8 96.9 41.0 97.8 97.3 97.1 97.6 97.7 98.3 98.8

w, 201 93.8 94.9 9S 1, 99.9 96.7 96.7 97.0 97.2 9A. 97.6 97. 1 971 98.0 48.1 98.4 9.4(.7 I l 931 94.9 95.6 99.9 96.7 96.1 97.0 97.2 9713 97.6 97.6 97.6 96.0 98.. . 6 i?.3

6f 01 913. 99.9 99.6 99.7 9.7 96.7 97.0 97.2 97. 97.6 97.6 97.6 94.0 98.3 98.. 133 .

TOTAL NIJMHt Of O8SERVAIONS: 910

I

ULUBAL (L!MAIGEGGW BRANCH AH9CFNIA4L AC UL NCY OF UCLUWRLNC[ OF CI I INb Vf1S0 vISSIItl S

00LF I FROM HOURLY O8STRVAIIONSAl. sEATHfk 1 LRVICE/MAC

SIAIION NUMBER: 727855 SIATI ON NA4I: FAIRCHILD AFb WA PLRIOD F RCURU; 5- 890019: OCT 311 jQS(L : IU0-2JMJ

uL I INC 9NSLi1. IN STATUTE MILLS

IN I GE bE GE GE GE oE GE GE GE GE GE Cl ( L CE G E FFEET I 10 5 4 1 2 /112 2 1 12 1 1 /4 1 31 5/o 1/2 S/IA 1/4

NO C IL I 56.6 51.0 S1.2 51.4 57.4 S7.4 57.5 51.5 51.S 01.0 S7.5 51.5 %7.S S.S GU.S Sb

bE 20D01 65.5 66.u 66.2 66.5 66S. 1 6.5 66 6 66 : 6 ,66 66,b 6. . 6b b6 6 .GE 10001 66.2 66A 61.0 6 1.2 67.2 67.2 61.1 67.1 67.1 61.1 b.1 61 67 .1 S US ul.1 b7.3GE 1000 66.5 61. l 6 7.2 67.9 61.4 67. 4 7.7 S 6.5 67. 66 67.5 67.S 67.5 6.5 b7.5 b7.GE I.OUO bA.5 b.0 69.2 69.5 69.5 69.5 69.6 6 b6.6 9.6 69.6 69.6 69. 6 6 9t, 6 t 9. .b.

uE 120?D003 1.13 71 .9 14 . 41 74 .13 % 14 .3 74 .4 74,.q 1 4 .4 79. 4 74.4 4. 4 1 4.4 4.4 14 .4

GE 1o001 17.0 77.1 18 70 7 : 78.4 78.4 18. 78.5 18.6 7 18 78.6 78. 79.1 75.0 18.0.E 90001 78.0 188 7U9.0 79.2 19.5 79.5 79.6 79.6 19.6 79.6 19.6 79.6 79.b 7.b 14.b I.bI.E 8000a 81t.8a 8 2.7 81. 1 81. 1 813. 5 8I. 5 1.7I I 8. 7 813. 7 891.7 8 3.7 813. 7 S1.7I s 81. .7 1.7uf 100113j 86.21 8.47. 6 8.1 88I ll.3 88. 1 8 8 .4 88.4, 88.4 88 .4 898. 4 RR8.4 s88. 4 86.. 84 .4 9.LIE 61UO1 88.2 89.4 89.8 90.0 90.2 90.2 90.1 90.1 90.3 90.1 90. , 9.1 9.1 9.1 4.1 ,.1

bE 5003 90.9 92.2 96 92 . 9 91 0 9$1 91 .1 9 1.1 91.1 91.1 91.1 91.1 411 97.1GE 4500 91.4 92.8 992 91.4 91.7 93.7 91.B 91.8 41.8 91.8 99.8 91.8 91.R 91. Y1.8 9.9

I. 4000 91.9 93.6 94.1 94. 94. 9 97 9.7 $ 4. 9. 94.1 94.7 9.7 44.7 94.1(If ISGOI 92. 94 .0 9 4.5, 94 .8 96.2 9S6.2 95 .7 956.4 45. 9S.4 95S. 4 46.4 95.4 5.4 44 91.

I.F AfOUl0 92. 94.8a 9 5.6 95.8a 9 6.1 96b. 1 96 .2 96 .1 96.1 96.13 96. 1 96. 1 96b. 1 96 .1 b6. 4y.1

GE o5Ufi 92 7 94.8 95.5 95.1 96 2 9,. 96.3 96.5 9b.5 96.5 96.5 96.6 96.0 96. 86Y,0 b.0f oeuo0 92.9 95.2 95.8 96.2 96.7 96.7 96.9 96.9 96. 99 9 69 96.9 9 69 9b.9 96.9 96.9 4b.9(E 18U1 9 .8 9.3 96.0 9b.5 96.9 96.9 97.0 97.1 97.1 97.1 97.1 97.1 9T.1 97.1 97.1 I 1.I

GE ISuO 91.4 95.9 96.8 91. 9.1.7 91.7 97.8 98.0 98.0 98.U 98.0 98.U 99.0 9b.4 4 8.f 4b.

'I 12003 91.5 96.1 97.0 91.6 98.1 9,.1 98.2 98.1 98.1 98.1 99.1 48.1 98.1 46.1 98.3 9.

GE 1000 01.7 9a 91. 1 b 98 9.5 98.5.9 98.9 9 9.9 9.9 98.8 989 98.9GE 9U0 91.8 96.6 9 298. 94.8 99.0 90 9 99.0 99 99 99.0 99.0 44.0 9.JGI 8003 91.8 96.1 97.4 98.5 9 98. 98.9 99.1 99. : 99.4 99.4 99.4 99.4 99.4 99. 44.4 44..

GE 8oOl 91.8 96.1 9.b 98. 98.9 9 99.1 99.4 49.4 99.. 99.4 99.4 99.4 99. 49.4 89.4

61 uo l 91.8 96.1 97.6 98.5 98.9 96.9 99. .1 99. 9 9.4 99.4 98.4 99.4 49.4 9.4 99. 44.4

II 5U01 91.8 96.8 97.7 98.6 99.0 99.0 9 99.2 99.6 99.5 99. 99.5 99.5 94.0 99.0 4 9. 48.0

GE 4003 9.8 96 91.8 98.7 99. 1 9 99 99.5 99.8 99.6 99.8 4 9. 99.6 9.9 94.8 94.8 99.S

1 1403 91ni .8 96. 91.6 98.7 99.1 99.1 998 99.8 99.8 49.8 99.8 9a . 8 9.8 9.8G 2003 958 96.9 91.8 98.8 99.2 99.2 99. 99.9 9. 99 99. 9 .9 9.9 94.9 4.9 E9.9 94.4

6E ILcol 91.8 96.0 9.1 98.8 99.2 99.2 99.6 99.9 99.9 99.9 1O0.0 I3.6 111.0 I 1 1] 0 J :

GE 01 91.8 96.9 91.8 98:6 99.2 99.2 99.b 9949 99.9 99.9 1UfI.0 11.. 1D.3 1 1,.j I a. I.. . . .•o . ........... ........... ............ . .: .. .*. ......... . .. . . . . . . .... ... .. ..... ..............

IOAL NUMBER OF OBSERVATIONS: 910

S

01068 CLIMAIOLO7 BRANCH PtkCENIAUL fRL.IUENCY Of UCCU86I.LI 07F ClILP.I RER US V ili I vii SAfETAC FROM HOURLY OlPRBAIIUNS

81R LAIHER SERVICIMAC

SIA 1O NUMAER: 727855 5TATION NAIt: FAIRCHILD AF8 WA PLAIOD Uf RECOGD: 7, -4MON I : 0 C1 '1OOURST S III): 1520 L'i

;ill N; ... ... ... ... .... ... ... ... ... ... ... ::: ::: ::: ::: ::: ....::.............................................

IN I 1 GE GL T, E b E 66 G G GE GhL Gt L E 51FLI I I I n 5 3 S 1 /le 2 1 1/2 1 1/4 1 3/ 528 / ut I /. 2

NO CIIL I 51.0 51.9 52.Z 52.1 52.1 52. 52.5 52.5 52.5 52.5 52.5 52.5 52.b 52. 1 25 2.S

Lf 20000A btO5 63.6 61.8 6.9 61.9 62. 62.2 62.2 bZ.2 62.2 62.2 62.Z 6.2 62.Z b.2 62.201 18s00 Is b2.6 62.8 b.9 62.9 63.0 Q .1 b b .1 63.1 b. 61.1 63.1 6,1.1 S.1 1.1uE 160O0O 63.7 62.8 63.0 61.1 63.1 63.2 61.3 63.1 61.1 63.1 61.1 61.3 61.1 63.1 of.1 b.1

GE I10001 61.3 64.6 64. , 64. b4.4 5.1 6.2 65.2 b 65.2 65.2 65.2 65.2 65.2 65.2 bS.2 t5.2J 12001 L8.7 10.1 70.3 70.4 70.4 70.5 70.8 73.8 10.8 70.8 10.8 70.8 70.8 7U.8 70.8 7..v

I.E U10001 13.5 75.2 75.4 15.5 75.5 75.6 75.8 75.8 15.8 75.8 15.8 7. ;5.8 75.A 75.8 b.80E 9COO0 15.1 7 .7 16.4 77.J 77.2 17.3 77.5 77.5 17.5 77.8 77.5 77.5 77.5 77.5 7.s 77.5"E 801 78.2 79.4 80. 811.2 80.4 80.5 80.8 80.8 80.8 80.8 80.8 80.8 8L.8 82.8 1.8 6.8(61 70001 8.5I I 8. 4 8103.8 83.8 84.2 84. 84 .5, 6.5 88 4,.51 84.5 840.5 84 .5I 8.5 .. 5 84.5 B 645LE 0001 8 3.1 85.1 5.6 85.7 86.1 86.1 86.1 86.3 8 6.3 8.3 8b.3 86.3 8. 3 86.1 66.1 s b.1

GE 50001 86.6 88.7 69.0 89.1 89.5 89.6 89.9 89. 89.9 8.9 9 89 89.9 89.9 84.9 69.9 99.906 450U 87.0 84.2 89.6 897 90.0 9.1 90.4 90.4 90.4 90.4 90.4 90.4 90.4 90.4 91.4 40.406 4000 88.5 90.8 91.1 91.2 91.5 81.6 9b.9 91.9 91.4 99. 91.9 91.9 91.9 91.9 91. 91.9GE 35001 88.6 91.8 92.1 92.5 92.8 92.9 41.2 91.2 83.2 93.2 93.2 93.2 91.2 91.2 91.2 91.2Ct 10001 91.6 93.9 94.3 94.4 94.9 95.1 95.4 95.4 95.4 95.4 95.4 95.4 95.4 9., 95.4 9.4

06 2uoi 92.4 94.7 95.2 95.4 95.8 95.9 96.3 96.1 96.3 96.3 96.3 9b.3 96.3 46.3 96.1 9.3GE 20001 93:0 95.6 96.1 96.5 97.0 87.1 97.5 97.5 47.6 47.6 97.6 97.6 97.b 7.b 9.b 97.bGL 1801 91.0 95.6 96.1 96.5 97.0 47.1 97.5 97.5 97.5 97.6 97. 6 97.6 97.6 97.6 7. 6 47.6

LE 15001 41.3 96.0 96.7 97.1 97.5 97.6 98.1 98.1 98.1 98.2 98.2 98.2 98.2 48.2 98.2 46.2LI 12L0 9 3 5 962 96.9 97.2 9.7 97 . 8 98.1 98.4 98.5 98.5 98.5 98.5 98.5 4.5 9e.5

LE 10001 9.7 96.7 97.4 97.7 98.4 98.5 98.9 98.9 99.0 99.1 99.3 99.1 49.1 49.1 94.1 94.1GE 4001 91.7 96.7 47.4 97.9 98.5 8.6 99.0 99.0 99.1 99.2 99.2 99.2 99.2 44.2 94.2 99.21 B0n 93, 8 9b.8 97.5 98. 98.7 98.8 99.2 99.2 99.4 99.5 99. 99.5 9.5 99.5 V9.5 9,.5

61 7001 91.9 96.4 97.6 98.3 98.8 96.9 99.4 98.4 49.5 99.6 99.6 99.6 99.6 99.6 99.6 54.6

bt tol 91.9 96.9 97.6 98.1 98.9 99.0 99.5 94.5 99.6 99.7 99.7 99.1 99.7 99.7 94. 99.7

bE 5G1 9 3.9 96.9 91.b 98.1 99.0 99.1 99.6 99.b 99.1 99.8 49.8 4.8 99.8 44.8 99.8 9.4L, 4001 91.9 96.9 97.6 98.1 99.2 99.4 99.8 99.8 99.9 1000 10.0 100.0 G0o. 10. 0.0 L .J:)01 1001 91. 9 96.4 97.b 96.1 99.2 99.4 99.8 99.8 99.9 1o.0 300 .0 10 1.0 30 .0 1 uO0 129.2GE 2031 91.9 69 97.6 48. 99.2 94.4 99.8 99.8 89.9 I30.0 100.0 100.0 10. .0 .I 1.0.0 (II .0S[ Isog 91.9 96.9 47.6 98.1 99.2 99.4 99.8 99.8 99.9 1o.1U 100.0 102.0 303.0 100. u 2.0 .1u

6E 01 .. .9 96.9 97.b 98. 99.2 994. 99.8 99.8 44.8 100.0 300.0 0.0 300.0 100.U 101.0 (.113.. . . . . . . . . .. .... .. ..... . . ........... .*........* ... : . . . . . . .. . . . . . .*. . . . . . . ... .. .. . .. .

308L NIJMBR OF OS8RVATIONS: 950

I

GLOBAL CLIMAIOLOGV OANCH )[PCINIAGE fwEAUENCY OF OCCURR.NC OF C[ILING VERSUS VIIBILITY rUSA, LTAC FROM HOURLY 0S R88TI06

AIN .EArThRN EW8V8CIM8C

SAT1ON NIJMILR: 72786 511ATIO NA4E: FAIWCHILO APB WA PERIOD Of RCO.D: 75-64MONT.: 0CI HOI URLSI : 20-l[03

........ .... o ............................... ..........................................................

CELII 16" 8ISIAILIIY IN Sl:ArTU MILTSI N | G GE G E f E GE GE G E G I GL GE GL GE 1 E ut

FIlI I 10 b 4 3 2 112 2 1 Il/B 1 1/q 1/'. 1/2 S/lb 1/4 3

NO CEIL I 49.S 1I.9 52.G S2.1 52.3 52.3 52.1 S2.1 52.1 S2.1 S.1 42.1 52.3 'Z.3 t,2.3 62.3

7L 00001 1 s9.8 59.9 bU.1 ,l : bO. 6. 6.1 1 6.1 60.1 b . :3.I I.l 60.1 60. t1Ol 6L1

Ut 180001 S8.l 60b 60.9 61.1 61.1 61.1 B 1, 61.1 61-I 61.1 1.1 61.1 61.1 £1.1 tI.I 61.1GE 10001 69.49 60.9 1.0 61.2 61.2 62 6 61.2 61.2 61.2 61.. 61.2 61.2 61.2 61.2 .1.2 1 ..GE 140001 b0.1 62.9 61.0 61.2 6.:2 b.2 63.2 61.2 b1.2 63.2 61.2 b.2 63.2 61.2 1.2 63.2GE 120001 b.9 b1.8 68.0 6b.2 68.2 68.2 b8.7 6 8.2 6 8.2 6 8.2 6a.2 8 8.2 8.2 6d.2 &8.2 6d.2

6[ 1U0001 68.8 72.0 7 2.2 12.4 ;Z.4 72.8 72.4 72.6 12. 72.: ; 12.8 2.9 12.6 12.6 12.4 12.;GL 600U0 71.3 74.5 74.6 79. .8 4.8 19.8 7.8 74.8 14.8 16.8 14.8 1.a 46.8 76.8 46.8 1H *

GE 80001 19.7 8.0 78.2 78. 78 . 78 785 7. 18.5 18. . 78.6 18.6 7. .S 1.

It 100O0l 17.1 80.9 81.2 8.4 81.I 81.5 81. 5 81. . a .5 81.5 81. 81.6 81.5 1.6 .GE 60001 18.7 82.5 82?.6 83.1 81.2 83.2 83.2 83.2 81.2 81.2 81.2 81.2 81.2 81.2 81.2 a3.2

.,E 6001 19.7 81.4 83.9 89.1 89. 2 84.2 4 84.2 86.2 842 8. 86.2 89.2 8.2 86.2 19.2, 4Suo| 19.9 83.1 84.1 84. 84. 4 84 . 4 84.4 869 86.'. 89.9 84. 4 .4 86.4 b5.4

GE 901 81.9 a86.2 86. 86. 8Sa 86. 86.9 8. 86. 9 86S.9 86. 9 86S. 9 86 .8 86. 85. 9S PI .

ut 1001 82.1 8b.9 :7.'. 87.6 8.8 87.8 87.8 81.8 87.8 87.8 81.8 87.8 81.8 87.8 b88 81.8

G[ if31 as.1 89.4 89.6 90.1 990 3 60.1 90.6 90.4 90.4 90.4 90.4 63.8 90.6 90.9 9.

CI E 00 86.9 90,.. 9 0.8 91. 9I.? 912 9.2 1.1 61.1 91.3 91.1 61.1 41.1 61.3 61.1 61.1GE 20O1 81 .6 61.1 92.1 92.6 92.9 62.9 42.9 9.1] 61.0 91.0 91 3. 9 91 0 3.01 "1.0 61.3

GE 181101 87.6 91.8 92.6 926 93.0 9.0 9 90 91.1 91.1 91.1 9.1 9.1 41.1 93.1 91.1 91.1

GE ISGOI 88.2 92.1 9133 9Z.s 94.0 94.0 44.0 66.1 99.1 94. 94.1 94.1 6. 1 66.1 46.1 14UE 12UO 88.9 91.9 94.8 96.1 96.7 95.7 97 9 , .8 95.8 96.8 96.8 96 66.8 95.8 96.6 66.8

GE 10 U 89.8 96.*8 9.8 96.1 96.9 66. :9 9 6. 91 I 91: 7.2 91. 97. :1 91 9 1. 1.1GE 9001 90.0 95.1 96 7.1 91.l 47.1 1.1 97.1 1.4 97.8 91.4 97.6 97.6 91.6 91.5GE 8001 90.1 96.6 96.6 97.] 91 91.7 91.7 98.0 6.0 98.1 98.1 98.. 8.2 98.2 Y8.2 68.26E 100o 90.1 9s.b 96.6 97.1 98.0 98 .0 60 9a.2 68.2 98.1 98.3 98.3 98.6 98.6 9 8.4 6 8.64E 6101 90.1 96.8 96.8 91.1 98.2 9.2 98.? 98.6 98.6 9.9 98.8 98.8 9. 96.

GE 6U01 911.2 95.9 96.9 97.6 68.6 98.6 98.6 99.0 69.0 991 99.2 99.2 99.2 9.2GE 'O0| 93.2 96.9 96.9 91.9 98.8 98.8 98.8 96.2 99.9 99 99.7 99.7 99.8 99.8 v9.8 9y.8G.E 10O| 90.2 96.0 97.0 98.3 98.9 98.9 68.9 99 .4 99.6 99 99.8 99.8 99.9 96.9 69.9 999

GE 2 0 90.2 96.U 97.0 9.] 98.9 98.9 98.9 99.4 99.5 99.1 99.9 99.9 00 .000 1 O. a 30 .0GE l10 .90.2 9b.U 91.0 98.3 68.9 98.9 98.9 99.4 99.5 99.7 99.9 99.9 100.0 i00.3 13.0 1o.3

uE nlI 90.2 96.0 97.0 98.J 989 8.9 98.9 99. .S 99. 99.9 99.9 100.0 100.3 I U.0 IOU.0.......... .... .... *.......... ...98 ....... ...... ... ....:...... ...... ...... ..... . ....... ..... . ...... ...... ...... ... ...

OAL NUJMBER Of OBSERVATIONS: 910

J

UL0AL CLIMAIOLOUY 8RANCn R9LLNI AGE FR6U[N6 V Of UCL.)RQkL1 OF C[ILING VERSUS VISI81LITYUSAFET AC fR0M HOURLY OSfRV 6T IONSAIR OUAYH RN SERV ICL /MAC

TAION NUMBER: 721855 SA1110- NAl: FAIRCHILD AF8 WA PLR1OU F RECORD: 7S-4MONTH: OCT HOJRILSII: Jg9U-1100

II IL 181 1511 I'3 I' SI A TOIC***L S,,*I,,* 11 ,****", ,"**,5 ... **

IN I ul GL GE Ut U( GL GE GE GE I A UL UL 0LE AFfEl I 10 6 5 4 3 2 112 2112 114 I 34 518 1/2 /I 114

NO LLIL I 48.4 52.U 52.5 52.8 53.2 53.4 53.4 53.5 53.5 S3.5 53.5 53.7 53.8 5-.1 S.2 54.

6E z20000 5.5 58.6 59.1 59.5 60.0 CD.2 bO.2 60.3 60. 60.4 60.6 60.8 60.9 6,. .1.4 b3.I 140001 5S.6 59.9 60.4 60.8 61.3 61.5 b.5 b.6 61.6 61.? 61.9 62.0 62.2 [2.5 b2.t 62.9

Of 160001 55.9 60.2 80.8 61.1 61.6 61.8 61.8 61.9 bi.9 62.0 62.1 62.9 62.5 6 .d 63.0 ID .2Of 140001 57.1 61.5 62.0 6 ., 63.0 6.2 63.2 63.3 63.3 63. 3.7 63.8 61.9 64.2 64.4 b.6UL 1200 bi.4 66.2 66.8 67.2 67.8 68.1 b8.1 66.2 68.2 68.3 68.5 68.b 68.7 69.0 b9.2 19.s

0' 100001 65.9 70.4 1;.4 71.8 IZ.b 72.8 72.8 72.9 12.9 13.3 1.2 7 3.3 73.. 7. 19.0 ,d.2

Of 9001 66.7 71.1 72.3 72.7 7.34 13.7 73.7 13.8 73.8 70.4 14.3 74.2 74.3 74.6 14.8 1I.1Of 80001 6g.6 ?.. 75.4 75.9 76.1 7b.9 76.9 77.0 17.0 71.1 73.3 77. 77.5 7.6 7 .1 16 .Ut /O000T 1.5 77.8 28.5 79.] 9.8 8G.0 80.0 80. 80. 02 80. 80.6 83.8 81.1 61.. 8.

Of 6r1O01 19.0 79.5 80.1 80.6 b 1.4 81.6 816 81.7 81.7 81.8 82.2 82.3 82.4 l2.7 82.9 83.l

Ut Son 14. 19.9 80.5 81.I 81.8 8.0 82.0 82.2 82.2 82.3 62.6 82.7 82.8 83.1 83.3 83.5GE 4SUfll17.7 80.4 81.1 81.6 82.4 82.6 82.6 82.7 82.7 82.8 8. 83.2 85.3 83.7 8.9 84.103 40001 15.S 81.0 81.8 8.4 81. 83.3 80.3 83.4 81.4 81.5 83.9 84.0 84.1 84.4 8.6 89.6Ut 35001 15.5 81.3 82.3 82.6 83.7 83.9 83.9 89.0 84.0 84.1 6 4 4.5 84.6 84.9 65.2 5.Ut I 0Wo1 n b. 82.6 83.7 89.3 85.1 86.9 85. 58 .6 85.6 85.7 86.0 86.1 86.2 8B.6 b6.8 81.0

U[ 25001 16.9 83.9 84.5 85.2 86.3 86.3 86.6 86.8 86.8 86.9 81.2 87.3 87.4 1.17 68.0 86.2![ 2001 11.1 8~.1 85.2 85.8 86. 81.01 87 87. 87.5 87.8 88.0 88.3 88.4 68.6 86.8

t 38001 77.8 84.3 85.2 85.6 86.7 87.0 87.2 87.4 87.8 87.5 87.4 88.0 88.1 98.4 68.6 88.86 1 5001 71.7 84.7 85.8 8.5 87.4 87.7 68.0 88.2 88.2 88.4 88.7 88.8 88.9 89.2 89.5 85.76t 12301 78.3 85.5 86.7 87.3 88.5 88.6 88.8 89.0 89.0 89.2 89.6 89.7 89.8 90.1 90.3 90.5

t 1,0001 78 8. 90.0 90.2 90.4 90.4 90.6 93.0 91.1 91.2 91.5 91.7 91.4G[ 9001 39.2 81 88.3 84.3 90.0 90.1 90.5 90.8 90. 8 93.3 93. 9 91.6 91.9 92.2 92.9bc 8001 80.0 88.1 89.4 90.2 91.4 91.7 92.0 92.3 92.0 92.b 92.9 93.u 93.1 93.4 9 3.7 6.96t ,001 80.2 88.5 89.8 90.6 93.8 92.2 92.5 92.7 92.7 93.0 9.4 93.5 91.7 94.3 94.2 94.4Ut 6001 80.2 88.7 90.0 93.9 92.0 92.4 9z.7 92.9 9.0 90.3 93.8 93.9 94.0 94.3 94. 94.1

Ut 5001 80.3 89.0 90.3 93.1 9z.8 93.3 93.7 94 94. 94. 95.2 95.3 95.4 9S:1 95.9 41.3Of 4001 80.4 89.2 90.5 93.5 93.2 93.5 94.2 94.6 94.1 95.2 95.4 95.9 96.0 96.3 96.9 97.1GE 5001 80.4 89.4 90.6 91. 93.9 94.3 95.3 95.5 95.6 96.1 97.1 97.2 97.4 91.8 98.5 94.8At 2u00 80.4 89.4 90.6 v3.7 94.0 94.4 95.2 95.6 95.7 96.5 97.4 97.5 97.7 98.2 99.0 .30.3G[ 1001 80.4 89.4 90.6 93.7 94.3 94.4 95.2 95.6 95.7 96.5 97.4 97.5 97.7 98.2 99.0 1i3I

t 01 80.4 99.9 90.b 91.7 99.0 94.4 95.2 95.6 95.7 96.5 91.74 91.5 97. 98.2 99.0 303.3.. ....... o................ °.... ...... ......... , ...... ,........ :...95........ ...... ..... . ....... . ..... ...... ...... o

1O3AL N0988 OF 08SERVATIONS 930

.6

GL08AL CLIMATOLOGY BRANCH /[RCLNTAUL FREQUENCY Of OCCURREN CL OF CFILING VERSUS VISBIL[llUSAF I AC FRWOM HOURLY O SLRVAfONSAIR .dEATHR SFRVICEI/MAC

STAION NUMBER: 127855 SIATION NA4E: FAIRCHILD AF8 WA PtR10 OF RECORD: 71-b4MONTH: 0C T HO U RS(LSI|: bOO-OBO

CII G VI SI 1LITI ION SIAIU TL Mu I LE5

IN I 01 [ GL G t E GL GE G t I GL G L G0L 01L G1L EF LE I I0 t 1 /12 2 1 1 131 //4 5/8 / 2 5/16 1 /4 J

..... ... o.......... .................................... ............................ •..........•................. .......... ....

N0 C0 LIL 4b.0 48.4 49.U 49.9 50.3 5.4 50.6 50.9 S1.0 51.4 52.0 52.2 52.s 6.6 61.2 54.6

GE 01O 49.9 D2.O S 1.2 64.3 5.6 64.6 5.8 55.3 SS.2 5.6 56.2 56.3 66.7 . 174 6I1J580E 10001 51.1 69.5 54.1 5.5 56.0 56b. 68. 6.6 56.7 51.1 65.7 5.8 S:.2 5.. 68.9 6.1GE 160001 I.4 54.2 5.8 55.7 56. 562 66.5 66.7 66.8 S7.2 67.8 8 .0 58.1 66.. 69.0 61.9GE1 40001 62.7 55. 56.2 67.4 57.8 580 58.2 68.4 68.6 68.9 59.b 591 6.0 60.1 60.8 b.2

UL 320003 51.2 60.3 63.3 61.3 62. 62.8 3.0 61.2 61.1 61.8 69.4 b6. 64.8 64.9 36.b b7.2

01 300c01 33.6 65.3 65.9 67.1 61.6 67.6 67.8 b.2 68. 68.7 69.4 69.6 69.8 19.9 70.1 3..GE 90001 62.8 66.3 67.2 68.6 68.9 69.0 69.2 69.6 69.7 70.3 70.8 70.9 73.2 73.3 72.0 73.0GE 80001 65.7 69.5 70.8 212 : 2.6 12.7 17.9 3.2 713 71.9 74.6 74.6 74.9 76.3 76.8 37.26E 70001 69.6 73.3 79.6 76.) 76.6 76.6 ir..8 77.2 71 77.8 78.6 78.6 78.9 79.3 79.9 831OE 000| 7O0. 74.3 76.6 77.J 77.4 77.5 77.7 78.2 78.3 78.8 79.5 79.6 19.9 80.1 81.9 82.5

6E 5000 72.0 75.9 77.3 1. 9.3 79.2 79.5 80.0 b0.1 80.6 81 839 83.7 81.9 1 8.1Of 45001 77.6 76.3 77.7 79.3 79.6 79.7 79.9 80. 80.6 83.1 81.7 83.8 82. 82.. 3.3 849..01 40001 71.o 17.2 18.6 83.u 80.4 80.6 80.8 83.3 83.4 81.9 62.6 82.7 81.3 81.2 4.0 a8.4OE 35001 74.0 78.4 19.8 81.2 83.6 81.7 81.9 82.5 82.6 B3.1 81.8 81.9 84.2 s. 4 a6.2 8b.6

Of 30001 74.2 78.8 80. 83.7 8I.1 82.4 82.8 81.3 b3.8 84.0 84.6 84.1 85. 8S.3 a6.0 87.4

01 25001N7. 79.2 80.6 82.2 82.7 82.8 8a.1 81.9 64.0 84.6 85.2 86.3 86.6 85.8 4b.6 88.0GE 2C001 79.8 74.6 80.9 82.4 82.9 81.0 81.5 84.3 84.2 84.7 86.4 86.5 85.8 86.0 4b.8 86.2Of 38001 76. 1 9.1 83.3 82.6 8 1 81.2 81.8 84.3 84.. 84.9 85.6 86.7 84.2 0.2 87.f0 64.4OE 15001 7. 0.3 8.5 81.3 8.7 81.3 8.1 84.8 84.9 85.5 86.1 86.2 86.6 86.8 47.5 44..E 1 2001 75.3 80.3 83.7 81.4 89.1 84.2 84.7 86.4 85.5 86.0 86.7 86.4 87.1 81 48.1 89.5

fE TOT0 5.1 81 8 84.6 81.1 86.4 85.9 86.6 86.8 87. 8 8.0 88.1 88.4 78.6 89.. 90.8Of 91Oi 75.8 83.4 42.4 84.6 86.5 86.6 66.3 86.8 87.0 87.6 8.3 88.4 88.3 8F8. d3 91.1

, 8uO1 76.9 82.1 81.8 86.4 86.6 86.4 87.3 88.0 88.2 88.7 89.6 89.7 9].0 411.2 93.2 9..L

0 1O0 6.5 82.4 8a.9 86.7 86.6 86.7 87.2 88.3 88.1 88.8 89.7 89.8 93.3 90.1 93.3 92.6GO 60n 16.6 82.1 84.4 86.2 81.4 87.6 88.1 88.9 89.3 89.7 90.6 90.8 93.: 91.3 92.2 91.a

01 SUOo 76.9 81.31 84.8 86.? 87.8 88.0 88.5 89.4 89.6 90.3 93.3 93.2 93.6 93.8 92.3 9.GO 403' 77.2 81.3 85.3 97.3 88.7 8.8 89.4 90.2 40.4 93.3 92.? 92.1 92.7 92.9 4 .9 4.7

G0 3001 17.: 81.8 86.7 87.8 89.6 89. 90.1 91.1 93.3 93.9 93.U 9 1.3 91.5 4. 6.952 41.bG 200 1 7.4 85.8 85.1 88.] b9.6 89.7 90.2 93.2 93.8 92.0 91.1 91.2 93.9 9. S 96.11 44.6G[ lun1 1P.4 83.8 86.1 86.J 89.6 89.1 90.2 91.3 93.6 92.3 93.1 93.4 94.3 94.5 46.2 3o3.]

GE qII F .4 8.8 85.7 88.J 89.6 89.7 90.? 93.8 93.6 92.1 9..3 9. 94.3 94.6 .. 12". U. . . . . . . . . . ... . . ... .. ... . . . .. . . . . . . . . . . , . , . . ... .................... .. . . 89 6 .. 9. .. .. . .. .. . ..

308L NU8R91 Of BRSERVATIONS; 930

S

61BAL CLIMATOLG0 Y WANC14 L9CLNI8AL FktwULNCY 01 OCCURPLN E OF CC ILiN VERSUS V ISIbLILIUSAFf A C fR, OM HOUPLY OStRVA10 NSA I RWFATHER SERVICE/MAC

SIA1ION NUMBEIR: 7Z785 6TA110% NA4: FAIRCHILD AFB .A PLP1OU OF 0LCOUD: 15-b4MONTHC: oct 4UqSLSTI: 0300-3503

tIING 1............. 9161811116 16 SI81OIL 91116

IN, G 0 0L GL 0E GL 6E GL Gf L 6f GL 6t GL Of W1 AFELl I 0 2 $ 2112 2 1 112 1 1/6 1 3/4 5/8 112 /lb 1/4

.... • ... ........ o.... ........ * ......... o . oo.. ooo ...... ooo ..... . o*..........*oo............. °o .............................

N.3 CLIIL I b6.0 61.4 b 61.7 61.9 6?.2 62.2 62. 62.6 2.6 62.8 62.9 62.9 63.4 0.7 t4.2 b.9

ul1300 61. at. 6.: 66. 8 6,6. 66.U 66. 6b. 6 6.:6 66. 7 b.9 66.9 67.6 6).6 b86.2 66.9ol 160001 9.2 1,8 66 6b 66.8 66.8 67.0 67.1 67.2 6 1. 67.6 b.6 6 .2 68.4 68.9 b.7.1 .60001 b49 660 66. 66. 6 7.0 67. 67.? 67. 1 67.8 6b 67.8 6 7.8 68 . 68b 69. 69.9' 1 1001 65.6 b.2 67.6 68.3 68.2 68.2 68. 68.5 b8.b 68.8 69.0 69.0 69.6 69.6 70.3 1 .1

61 120001 61.4 69.1 b9.6 69.8 10.I 70.. 70.3 70.9 10.6 70.8 11.0 I1.0 ,1.5 71.7 12.3 71.a

Uf 100001 l1.b 1.1 l1.8 79. 79.3 7 1 6.6 79.6 79.1 74.9 76.2 75.2 761. 16.9 76.6 11.2GF 90001 71.8 7.6 76.9 76.2 76. 6 71. 16.8 16.9 77. 1 77.3 77.3 7.8 76.1 76.6 ,g.6

1f 80001 76.6 18.6 19.0 7 79.6 79.6 79.8 79.9 80.0 80.2 80.6 80.6 81.0 8. 2 61 .7 2.6Of 70001 78.8 80.8 8.1 81.6 81.8 8.8 82.0 82.3 82.9 82.7 82.9 82.9 81.9 83.7 89.2 6.9ul bOO 80.1 83 82.8 81.1 8.1 83.1 81.6 80.8 83.9 89.2 84.9 89.9 89.9 86.2 66.7 86.6

If 50U01 81.7 8. 89.1 8.6 86.8 89.6 86.1 86.3 8:.O 86.7 8S.9 85.9 86.6 8. 7 81.2 86.3F 96001 62.0 69.0 86.6 86.9 86.2 86.2 86.6 85.6 85.7 86.0 86.2 86.2 86.8 87.0 87.6 8.1

af 900 8?.A 89.8 86.6 86.8 86.0 b.0 86.2 66.6 86.6 86.9 81 81 67.6 87.8 88.9 89.1u: 06O0 83.0 86.1 86.9 86.2 86.6 86.6 86.7 86.9 87.0 87.3 87.6 87.6 88.1 86.3 68.8 89.6

OE 30uo 85.9 86.8 86.6 87. 7 87.5 87.7 88.0 88.1 88.9 88.6 88.6 89.1 89.6 89.9 90.b

01 2 00. 8. 688. 86. 88.6 88.7 88.8 89.I 89.6 89.9 89.9 90. 90.6 3.IE 00 8t1.7 87.0 80 8,9 88.8 88.8 89.0 9 I 89 89.2 8 89 89.9 89.9 90.9 90.6 91.2 91.9f 18001 69.8 97.1 88.1 8.o 88.9 86.9 89.1 89.6 69.6 89.8 90.0 90.0 90.5 90.8 91.7 92.3

01 16001 66.6 87.6 88.8 8. oS 89. 9.7 89..9 1 91.9 9.6 92.? 92.9.1 IzoI 86.6 88.0 88.9 89.9 89.9 89.9 90.1 90.1 90.6 90.9 91.1 91.1 91.6 91.8 92.6 91.1

[ OO 86.1 86.. 89.6 90.3 90.6 901.6 90.9 91.1 91.2 91.6 9 9 : 9 91.9 91.9 92. 9. : 3.1 94:19E 9 66.1 88.6 89.8 90.2 90.9 90.9 91.1 91.3 91.9 91.8 92.2 92.2 92.8 91.0 93.6 99.6

61 F 01 86.6 86. 9 90.1 91.1 91. 3 9 91. 916 92.0 92. 92.6 91.0 91.2 91.9 96.71 700| 86.8 89.. 91).1 90.6 91.6 91.6 91.6 91.8 91.9 92.6 92.7 92.7 91 . 93.6 99.1 'I .1

11 61 87.1 90.1 91.1 91.5 92.5 92.6 92.7 92.9 93.0 9 .6 93.8 93.8 96.6 94.b ' .2 96.1

, U0l1 61.1 90.9 91.9 91.8 92.8 9 9.0 93.21 93.3 91.6 9. 2 9.2 99.8 95.1 96.6 : 6641 60 a97.1 90.9 93.. 9. 92.8 92.6 93. 93.5 93.8 99.1 99.7 99.7 96.5 96.7 96.2 97.2

6[ s100 87.3 90.9 9.4 91.9 92.9 92.9 93.3 93.7 91.9 96.6 94.8 96.8 96.6 95.9 96.5 97.6F 2003 up.1 90.9 91.6 91.9 92.9 91.0 93.6 9..8 66.1 96.6 96.1 96.? 96.9 96.2 97.2 96.107 11| 87.1 90.9 91.6 91.9 92.9 93.0 91.6 93.8 96 96.2 96. 96.0 96.6 97.6 69.6

LF I 87.1 90 . 91 .1 93.- 9?.9 93.0 93.6 93.8 99.2 96. 96.2 96.1 96.0 96.6 9 1. 00.

(11. . 1. 3 9 4 . . .. .° ... .... °.o o . .. 2: ...... 0... 9oo3 o. o , o° , o .. .. . 2 . o o.. 9 0..... .b ... :.... .°O .°°

TOAL NU991 Of OBSERVATIONS: 930

I.gu

GL0HAt CL14AIOLOOY BkANCH PER(LNA0 FRI6ULNCY 0f OCCUWRLNL OF LIIL IN U VUs V816161L((USAF 1C F608 HOURLY 06666A T 10%g AIR .1A7816 ,188JC6/M8C

6AION NUMELR; 12786S STATION NA: FAIRCHILD AFB WA PERI00 OF 96C060: 74-bMONTH: OCT HOUOb(L6Tl: OA -0200

mN 0 N, 1 : 01 L. 1 H6 UG I U 01 06 06 0.. .... .. * *.. . ... . . . .. . . . . . ... . .= . ..... ....... .......

FElt I 10 6 6 8 3 112 ? 1/2 1 I/ I I S/4 I, Il? 6/16 I/4 o

NO CEIL 1 61.8 62.4 62.b 61.8 61.0 63.0 63.3 63. 3 63.3 63.5 6.? 63.8 b 4.I 6.1 64.4 65.8

6E 3 r 1 69.2 65.9 66.0 bb*$ 66.1 66.1 b .1 6 7. 61.1 61:; 67.4 61.5, 67.8 67.8 68.2 b .I01 1 b0001 b6. 66.8 66.9 61. 67.6 61.6 68.0 68.0 68.0 6.2 68. 1 b:..8 b.' 661 69.0 1301C 16 001 66.2 67.0 67.1 67.4 67.7 61.? 68.2 68.2 68.2 68.8 68.9 68.6 68.9 '6.9 69.2 2.2G1 140001 68.8 69.1 69. 69.b 66.9 69.9 70. .3 1 o.3 70., 70.6 70.8 71.1 71.1 71.9 72.4G 12000 71.4 12.2 72.3 7. 12.9 7.9 73.3 73.3 73.3 73. 1.7 73.8 91 4.1 7 4.I 7. S 79.

GE 100001 7.1 76.8 76.9 76.2 16.6 76.6 17.0 11.U 71.o 77.2 I1°. 77.. 77.7 17.3 78.1 : .Uf 90001 77.1 78.1 78.2 76 38.8 78.8 19.2 79.2 79.2 79.6 79.6 79.7 83.0 80.0 87.3 81.06 80001 80.1 81.2 81.3 81. 81.9 81.9 82.8 82.8 82.8 82.6 82.8 82.8 83.2 81.2 81.6 9.661 70001 82.0 83.1 81.2 83.5 8.9 8 88. 84.1 84.3 88.6 89.7 8.8 86.2 85.2 86.6 66.6E b00l 89.0 86.2 85.3 85.6 86.9 85.9 86.3 8b.3 86.3 866 66.8 6.9 87.2 87.2 87.6 88.5

6f 5,11, 8b.1 81.7 88.0 ° 83 86. 7 86.7 89. 89 : 9 89. 89.6 89.7 900 90.0 90. 91.36 9500, 86.9 88. 88.6 88.8 89 89 9 89 89 89.9 90.1 90.2 90.6 90.6 90.9 g1.8

I1 97001 87.1 88.6 88.7 89.] 89.6 89.6 89.9 89.9 89.9 90.1 90.3 90.8 90.8 90.8 91.1 92.203 360o 81.1 88.6 88.7 89.] 89.6 89.6 89.9 89.9 89.9 90.1 90.3 90.9 90.8 90.8 91.1 92.]

03 I$IV,1 87.? 89.4 89.6 89.9 90.3 9U.1 90.8 90.8 90.8 91.0 91.2 91.3 91.6 91.6 91.9 92.9

6 2600 88.6 90.2 90.4 gu.8

.: .9 1.8 91.8 91.8 92.0 92.3 92.8 92.7 92.1 93.0 9.34S 20001 89.1 90.8 91.0 91. 3 91. 9 9 92.8 92.8 92.8 92.b 92.8 92.9 93.2 9 .2 9 .6 94.603 18001 89.2 90.9 91.1 91.9 92.0 92.0 92.6 92.6 92.6 92.7 92.9 93.0 83.3 93.0 91.7 99.6O| 161101 89.2 90.9 91.2 91.6 92.2 9 .2 92.6 92.6 9.6 927.8 9. 91.1 93.8 93 . 93.8 99.

0 1 1 0 0 1 8 9 . 9 9 1 . 1 9 1 . 9 9 | . 7 9 2 . 4 9 2 . 8 9 . 8 9 2 . 8 9 2 8 9 . 0 9 3 2 9 3 . 0 9 3 7 9 3 . 7 9 9 0 99

,1 "000l 89.6 9 1.3 91. 91.9 91. 9.1 9.1 9.1 99.1 9.l 9V.9 9.7

0 1 9I 1 9 . 9 1 . 4 9 1 . 7 9 2 . 1 99. 8 9 2 . 8 9 . 2 9 . 2 9 3 2 9 1 . 8 9 3 . 7 9 3 8 9 9 . 2 9 . 2 9 . 6 9.

.L 1UI 89.9 91.7 9.0 92.8 9.1 91, 93 93. 90.6 938 9.0 9.1 9.6 9. . 99.8 9.9

O 7 0 | 9 0. 9 2 . 3 9 2 . 6 9 . 9 9 . ? 9 3 . 1 9 8 1 9 . 1 9 8 1 9 . 3 9 . 6 9 . 6 9 6 . 1 9 6 .1 9 6 . 8 9 6 . 6

01 61,1 90.1 92.1 9.6 92.9 9. 8 93 9. 9.2 99.2 98.4 9.7 9.8 9.3 9.3 9.6 9.8

( A SU O l 9 . 6 9 2 . 8 9 1 9 3 .4 9 . 8 9 4 . 8 9 . 8 9 . 8 9 9 . 8 9 . 1 9 . 8 9 . 6 9 . 9 9 5 . 9 6 . 2 9 . 9

g o a l0 1 9 0 . 6 9 3 . 1 9 . 9 9 .9 9 6 91 9 . I 9 6.S 9 . 6 9 . 65 9 . 9 6 . 9 6 . 3 9 6 . 9 9 6 . 4 9 3 2 9 . 4

6 6 3 0 1 9 ( . 9 9 . 1 9 . 8 9 . 8 9 . 1 9 3 . 9 . 1 9 . 6 9 . 6 9 6 9 9 6 . 2 9 6 . 3 9 . 9 9 .5 .. 6 9 . 8

C. 2001 906 93.3 93: 939 96 962 996 66.6 9.6 961 96.6 9. 9 97.2 9.6 9.2 4b9.

G1 u00 90.6 93 .1 93.4 93. 9 . 9 65 9 .6 96.7 9 .7 96.2 96.6 96 7 9 . 8 9 3. 9 3 *.

01 o 9 o6 93.1 911. 9 .9 9 .2 9 . 2 956. 95.7 95.7 96.2 96.6 96.7 97.4 9 .8 9 .9 13 13

. .... . . .. .. :.o ..... . .... . ... .. . .. . .. o. .. . . . . . . . .. .,. , .. .. . . .o .. . .. . ... . . . . . .. . . ..

TOTAL NUBtR Of OdERA1TIONS: 9.

S

GLOBAL CLIMATOL06¥ BRANCH P1CLNIA.t1 .U[NCr OF OCLUR91NL1 OF OFILINC At6S. vlS6136AFTCAC ROM HOURLY OBSLRVAIONS

AIR .[A11916 SIRAICt/MAC

SAIION NUMLR : 72785 STATION NA4L: FAIRCHILD AFB WA PI0RIOD Of W1CUD 7S-84

NONT9: S1P NO U LSIP: AIL

IN I 61 E GL b GE 1 G0 kJ GE Of GE 1 G01 L t G E .F E l I 10 6 4 4 7 2 I/Z 2 1 / I' 1 /4 1 /4 4/A 2 3/i4 1/ 1

NO CCIt 1 67.7 68.6 b8.8 68.6 68.9 b0.9 b9.U 69.1 b9.1 69.1 b9.1 69.1 694.2 69. 2 69.2 t9.1

t.1 D0OUG1 12.9 79.1 74.2 14.1 74.S 14.5 74 6 7 4.7 74.7 74.7 74.7 74.7 7.7 74.4 14.6 .661 10001 1.1 79.1 74.4 74.4 74.7 74.1 74.6 79.9 74.9 74.9 74.9 74.9 74.9 7S.0 5.U .jGE 16000 1.1 74 . . 74.6 4 74.8 14.9 7.0 7.0 70.0 74.1 74.1 74.1 74.1 7.71 71.2 7S.2GL I90001 74.S 75.7 74.9 7b.J 76.2 7,.2 7b.3 76.4 .41 16.4 76.4 76.5 76.5 76.4 76.0 1 .bGE 120001 77.2 78.5 78.7 78.8 19.0 79.6 19.1 79.2 79.2 79.2 79.1 79.3 79.3 79.3 79.7 79.4

GE 100001 A3.4 02.A A7.0 63.1 8.1 3. 81. A3.5 03.5 83.6 61.6 83.6 03.6 63.7 93.7 63.7

(1 90001 03.4 84.7 04.9 '1.3 60.3 64.3 64.4 64.4 64.4 04.6 04.6 84.6 64.6 64.7 1 . 7 1.01 60001 64.0 a 7.2 01.4 87.S 07.7 87.0 07.9 88.0 8.0 8.1 06. 80.1 8.1 80.2 8.2 66.20C 70001 67.7 8.6 06.: 88. 89.2 89.3 89.9 69. 89. 89.5 89.6 8 9 9.6.6 9.6 69.7 69.7GE b01 88.7 89.9 90.2 90.3 90.0 90.6 90.8 90.0 43.6 90.9 90.9 90.9 91.0 91.0 1.1 4I.1

f 5000! 09.8 91.4 91.7 91.9 9.1 92.2 92.3 92.4 92.4 92.4 92.4 92.4 92.6 92.6 92.9 9..0E 40 90.7 92.5 92.8 9z.9 91.1 93.2 93.9 93.5 95.5 91.5 93.6 93.6 93.6 91.6 9'.7 9.7b0 40uo 91.9 93.8 94.1 94.2 94.4 99.4 94.7 94.6 94.8 94.8 94.9 94.9 94.9 94.9 5.0 95.301 35001 92.9 94.3 99.6 94.7 94.9 94.0 95.2 953 04.3 95.3 95.4 95.4 95 .4 .4 94.0 94.401 3OGG0 92.9 94.9 95.3 95.. 44.1 94.6 94.9 96.0 90.0 96.1 9b.I 9b1 96.2 96.2 96.1 9b.1

OF 25001 91.4 945 95.9 96.3 96.3 96.4 96.4 9b.6 96.6 96.7 96.7 96.7 46.6 96.0 96.4 9b.90[ 20U0 93.6 94.7 96.1 96.3 96. 96.9 96.9 96.9 97.0 97.0 97.0 97.3 47.3 91.2bE 18001 91.6 94.6 96.2 96.9 96.7 96.6 96.9 97.0 97 0 97 97.1 97.1 97.3 97.2 97.2 97.7

f 1400 1 93.1 96.1 96.4 96.6 96.9 97.0 97.2 97.3 97.3 97.3 97.4 97.4 97.. 97.4 97.4 97.401 12U01 93.0 96.2 96.6 96.6 97.1 97.2 97.3 97.9 97.4 97.4 97.4 97.4 97.6 91.6 97.7 47.7t1 10001 93.9 96.4 96.6 97.4 97.3 97.4 97.6 97.7 97.7 97.7 97.0 97.6 97.0 47.6 97.9 97.901 900! 94.0 96.4 6..9 97.3 97.4 97.4 97.7 97.0 97.0 97.0 97.9 97.9 97.9 y.9 90.3 96.3OE 8001 94.2 96.7 97.2 97.4 97.7 97.0 96.0 96.1 90.1 98.1 90.2 96.2 90.2 9A.2 94.3 96.301 700! 99.2 96.9 93 97 97 90 98.2 90.2 90.2 90 9. 9.3 4.4 9.4 94 .94 6001 94.3 97.0 97.4 97.7 98.1 90.2 96.4 90.4 90.4 98.4 96.6 9.9666 99.6 98.7 96.7

01 9001 94.3 91.0 97.6 97.0 90.3 96.4 906 90.6 90.6 98.7 98.8 9 98. 90 96.9 49.001 S001 94.3 97.3 97.7 90.3 98. 90.6 96.8 90.9 98.9 98.9 69.0 99.0 99.3 99.1 99.2 9.301 301 94.3 971 97. 9 902 98 80 9 9 99.2 99.3 . 99.4 9.4 99.4 99.6 94.7G[ 200! 94.3 91.1 97.8 91.5 98.8 98.9 99.3 99.3 99.3 99.4 99.4 94.4 99.4 99.6 99.7 99.0OE I001 94.3 97.3 97.0 90.2 98.8 90.9 99.3 99.3 99.3 99.4 99.6 99.6 99.6 99.6 49.0 13.96[ 00 94.3 97.3 97.0 9., 98.8 98.9 99.1 99.3 99.3 99.4 99.6 99.6 99.6 99.6 99.8 |' .3

. .. .. . . .. . . .0 . . . . . . . . . . 0 . . . 9.. . . . . . . . . . . . . . .. .. . . . ... . .. . .

TOTAL NUMBER Of O8$ERVATIONS: 12J0

4,

UBA, CIIMAIOLO06Y 8R8N9 EIRCE9IA[E fREUENCy OF OCCUR8LNCE OF C(ILINC .F65. 8I b,1lIT11USAFLIAC FROM HOURLY ObSLRVAI0N5SAIR 1, aIH:R [ |CIA

STATION NUBLR: 727855 STATION NA4E: FAIRCHILD AFB WA P[R1O0 OF 91(0RL,: 715 -6MONH : Sf1 90,9USL S;I I d10U-20JL

El~ , sI~~z, ;, ;;; ;i ;.. ... .........................................

1 I GE GE GE G GE GE GE GE GE GE GE .! f f i OEFEEl I ID 1 5 4 1 2 1/2 21 112 I 1/4 I 12 517 1 /2 5/16 1/4 j...... ....... .*......... . ..................... o ........ . o.. * ................ ................ *..............................

NO CtIL I 11.3 78.1 78.2 78.2 78.2 78.2 78.2 78.2 7l.2 78. 2 7A.2 10.2 78.2 78.2 18.2 l6.l

UL 200001 19.7 80.: 80.6 8U.b 80.6 80.6 80.6 80.6 80.6 80.6 80.b 81). 80.6 80.6 811.6 8.6GE 180001 79.8 80.6 80.7 80.1 80.7 80.7 80.7 80.7 80.7 7 87 80.7 80.7 83.7 8. 83.1 8 .7F6E 10001 19.9 80.7 80.8 8 . 7 0.80.8 80.8.8 808 8.8 80.8 80.8 82.9 82.8E 18000 80.3 81.0 81.1 81.1 81.1 81. 81.8 81.3 U 81. 81.1 81.1 . 81.1 O.i 81.1 81. 81.a

GE 120001 82.1 81.1 83.2 83.; 83.1 83.0 88.3 8.3 83.3 83.1 81. 8.1 81.1 a..a 81.1 6.1

6E 1G0001 87.1 88 88 88 88.8 88.8 88.8 88.8 88.8 88.8 88.9 88. 88.6 88.6 $.6 a. bGE 9000 89.2 90.3 90.8 90. 90*b 90. 90. .6 6 90. 90.6 917.6 90.6 9. 1 9. 93.7 9 76 80001 90.8 91.6 91.7 91.7 91.8 91.8 91.8 91.8 91.8 91.8 NI.8 81.8 81.8 91.g I1. 9".86: 7o00 91.2 92.1 92.8 92.8 92.6 9 2. 92.6 92. 92.6 92.b 92.6 92.6 92.7 9e.1 92.7 I . .

6 E 6000 9?.1 91.7 93.8 93.8 91.9 93.9 93.9 91.9 93.9 93.9 915.9 93.8 98.0 94.0 98.0 9.J

GE 5000 9.1 95. 2 9s. 95.0 95.8 95.8 95.8 95.8 85.8 95.8 9 5. 95.8 95.6 95.6 y.6 95.6I.E 400 91.9 96.1 96.2 9b.2 96.3 96.3 96.3 96. 6 93 986. 96.3 96 . 9684 96.8 4 11.8 96.8GE 8U01 88.8 91.0 97.1 91.1 97 91.2 97.2 87.2 97.2 97.2 81.3 91.1 7.1 lI1 IIE 1suO0 95.1 97.3 97.8 97.8 97.6 97.b 97.6 97.6 81.6b 697. 97.7 97.7 .7.1 17.1

GE I1001 95.8 97.1 97.8 9 1.8 97.9 91.9 97.9 .9 9 .9 97.9 97.9 97.9 98.0 98.0 98.0 9..j

GE 2SUO1 95.6 98. 98.1 9d.1 98.2 96.2 98,2 8.l2 98.2 98.2 98.2 98.2 98.3 98.3 98.1 9.$f 2000 95. 98.1 98.1 96.1 98.8 988. 98.8 98 98.8 98.8 98.8 98.8 98.6 88.6 99.8 98.

IE 18001 95.7 98.1 98.3 98. 98.8 98. 98.4 88.g 9 .8 8 .9 98. 8 98.8 g8.6 98.6 98.6 116.bG 1500 95.7 98.2 98.8 98.4 98.6 98.68. 98.6 98.6 98.7 98.7 8. 9.| 120On 9.17 98.2 9 8.8 9.8.8.686. 98.6 98.6 98. 9886 88.6 98.7 98.7 Y8.7 8.7GE 1(2001 95.7 98.2 98.4 9.8 98.6 98. 98.6 98 96 98.6 98.6 98.6 98.7 98.7 98.7 6.7

GE 900 95.7 98.2 98.4 98.8 98.6 98b 98.6 9.6 98.6 98.6 98:6 98.6 98.7 98.7 98.71 .. 1GE 8001 95.8 98.4 98.7 98.7 98.8 96.8 98.8 98.8 98.8 98.8 988 98.8 99 1.9 98.9 96.9(,E 7oOl 9.8 98.6 988 98. 98.9 98. 9 9.9 9 98.9 98.9 98.9 98.9 9. . 99.u 99.0 99.0GE 6001 95.8 98.1 99.0 99. 99.1 99.1 99.1 99.1 991 99.1 99.19 99.1 99. 99.2 929.2 98.2

GE SON 95.8 98.7 99.0 99.3 99.1 99.1 99.1 99.1 99.1 99.1 99.3 98.1 99.2 99.1 99.1 99.3GE 4001 95.9 98.8 99.1 99.: 9 99.2 99.? 99.2 99.2 99.2 99.2 99.2 99.3 99.8 98.8 81..

GE 00 95.9 98.8 99.1 99.1 99 99 99.2 99. 99.9 99 9. 99. 19. 98.7 99.7 89.7G 2 2001 95.9 98.8 99.1 99.1 99.2 99.3 99.6 999. 99.7 99 99.7 99.1 9..8 10.0 10.0 I I30GE loOl 95.9 98.8 99.1 99.1 99.2 99.3 99.6 99.7 99.1 997 99. 99.7 99.8 10.O0 100.0 10o.2

GF I 9 ..9 98.8 98.1 99.1 99.2 99.3 99.6 99.7 99.7 99.7 99.7 99.7 99.8 Ina.3 I12.0 J( .0.. . ..*,o .. **..o*.....*.......o..*.. .... ............................................ ,

TOAL NUMBER OF OBSRVAT1ONS: 930

I

4

-- A-*----- -___ __ __

,JHAL C tI Ma[A3 I 2 4U YIItk9I8CH I A f14.ULNCN 0I 12((IPILl OF CII I0 't11 ,% P,' 1, It3 IIU00A8fAC FOM HOULY 06S VAI 1

AA 8 A91 78( 4fk '778YIC(f

SI AI ION NWMHL P 72 185 S IA831004 N411 I A8(9310 8A88 jA k 113:,',09:1,.

08 O 0I7' 43,,0 1 . I : 3813 -2J1J

........ V IN............I*.,.*.*... ... . . . . . . . . . . . . . . . .. . ... . . . . . . . .. .. .. .. .. .. .. .. .. .. .. .. .. . . . . . .. .Cli.|N 1911,,011. [V IN 0TlIil 91L10

I I NL t t G [ (' It C, I rk G, I IL 6L [ E .It I 11 217 1 11 1 1 114 117 111 3 41 51, 611 "19 I 1 031

N0 1tIL 1 1 .L I 1.( 11.6 11 1 11.8 11 . 1.9 1.11 0 1 2.0 7.0 1' L. 12.0 72.0 7 .0 12.3

61 200: 6 :6.I 17.9 1:. 78.21 18.:4 lb.. 18. 88 7. 8 7. 78. 78 . 18.8 7.

I1 -80-o 170 7.,. 1.8 8. 7.8 8. 19.0a 791 79. 79. 191 10 19. 1 9. 79.

t 1 Io O 71. 78:4 18. 9 1 .1 19. 9. 1.4 0 .4 19 1. 94 794 79J.% 94Ia11.1017.2 1. 79. 9. 80.0 80.2 80.1 80. 8 .4 .1.4 83. 1. 0. 83 9 98.9 a..

G 1 a001 81.9 82.7 82.9 81.3 81.4 81.7 81.8 83.9 83.9 81.9 81.9 8 1.9 81.9 81.9 8s.9 8.

1.9 lIlOl 90.8 87.0 81.2 81.0 87.8 88.0 88.3 88.2 88.2 R8.2 89.2 88.2 88.2 88.2 89.2 0.

09 90 U1 87.2 88.4 88.7 88. 89.2 89.9 a 9.6 89.7 89.7 89. 89.1 89.E 89.7 89.7 89.7 8..1a1 01UO 89.1 90.8 911 1 91.1 91. 91.9 92.0 9 2.1 92.1 92.3 921. 92.1 92oi 9/.i 92.1 9 °I

11 TO00 90.3 93.1 91.8 91.9 92.9 92.7 92.a 92.9 9 .9 92.9 92.9 9,.9 92.9 92.9 92.9 91.9LIE 4000 93.1 91.9 91. 1 .1.2 91.8 9%. 94.1 94.2 9.1 94. ? 9. 94.2 942.2 9. 2 9.? 99.2

63 0uo 92.0 93.9 99.3 99.2 94.8 9 .0 99.3 9.2 90.2 .2 91, 9.2 9 5 9.2 90.2 0v.S2 95.07 40001 92.4 94.6 94.1 9.1 9.7 90.9 96.0 44.3 9. .1 9 9.! 96. 96.1 9b.1 96.1 94.b

6 0,099 S 91 908 . . 6.8 96.9 9V.9 96.9 96.9 9.9 9.9 9.,.9 96.9 91.9(11 1S0o1 91.7 90.7 96.3 9..2 96.8 97.0 97.1 91.2 972 91.2 .91. 91.2 91.2 97.2 91.2 91.261 oo 91.9 96.9 96.9 97.J 91.7 97.9 98.0 98.1 98.1 98. 1 99*3 99. 9 .1 98.1 99 . 9.1

bE 20001 94. 96.9 91 91.9 98.3 98.3 98.9 9.6 99.6 98.4 98.6 98.b 98.4 96.6 98.6 9.411 V0001 99.1 98.9 91.1 91.. 98.3 98.0 98.4 98.6 98.6 99.6 98.6 98.4 94.6 9h6 98.6 96.03 38001 9.1 96.9 971 9;.: 99.3 98.0 98.4 98.6 98.6 98.6 98.6 98.6 984 98.6 98.6 98.6

GE 10o 99., 91.9 91 92 984 98.6 98.1 98.1 98.7 98.7 98.7 98. 98.7 98. 9.7

19 12001 99.9 91.0 97.4 97

., 98.2 98.4 98.6 98.6 98 981 98. 98.1 98.7 9b.7 8 98.7

13 I00 99.4 97.0 91.4 97.4 98.2 96.9 98.6 9 .7 9.1 98. 7 98 9898.7 98.1 99.711t 9001 94.9 91.0 91.4 97.9. 99.2 98.4 98.6 98.7 98.7 98 98.1 9.1 98.1 98.1 98.7 9.I

4 8001 99.9 91.2 9 97.9 98.1 9. 98.9 99.0 99.0 99.0 9.0 99.0 99.0 99. 99.0 99.33E 9001 99.9 97.2 9U.7 97.9 98.1 98.8 98.9 99.0 99.0 99.0 99.0 99.0 99.0 99.0 99.0 99.

61 6009 99.9 97. 91.9 98.3 98.8 99.0 99.3 99.2 99.2 99.2 99.2 99.2 99.2 99.2 99.2 89.2

13 OUGE 99.9 91.3 98.0 98.2 99.0 99.2 99.1 99.9 9.4 99.4 99.1 99.4 99.V 99.9 99.9 99.913 4001 99.9 97.0 98.1 98.0 99.3 99.: 99.9 99.6 99. 9 9 9 96 99.6 99.6 99.6 99.603 3009 99.4 91.0 98. 98.9 99.7 99.4 99.1 99.8 99.8 99.8 99.8 99.8 99.8 98.8 99.8 99.8G3 2009 94.4 97.0 98.2 98.9 99.0 9 99.8 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9 9.9(31 3001 99.4 91.3 98.2 98. 99.1 99. 99.8 99.9 99.9 300. 300.0 300.0 300.0 300.0 100.0 330.a

13 20 94.9 97.3 9 .2 .3 9:.7 99.9 99.9 300. [0.0 3.0.0 0.09 10.0 10.0 333.0

... , ..... ..... o,........ .. .. . .. . . .. .... . .... .... o o . ° . . .,... ...... 99o..,9: ............. ...... . .

OT8L NUBL OF OBRVATION : 930

I

LLOAL CIIMAIOLOUY dP4NC, LRCLNAIA k[ ULNCY OF OCCURPENLE OF CEIL[NU VL5US VISI bILITUSAFtIAc F 3OM 3tOURLY O00SRVATIONS

S A ION NUMBER: 127855 STATION NalE; FAIRC"ILO AFB WA PEPI U Of RLCRD: 5-84

"041"; SFP HO USILSllI 15[]2-17{3

IN I OL GE GE G[ GL OE GE 03 OF GF G G G A OLFF! L I 10 5 3 2 112 ? 1 112 1 1/4 1 3/ 4 5/ 112 5111 1/4

.. . . . . .............. .......... .... ............. ,. ...,o ..... . . . ......... o ..... ..........., ............... ............. .o

N0 CEIL 1 62.7 64.1 64.1 64.1 b4 . b4.3 64.3 64.3 64 .3 64. 64.3 64.3 64.3 64.3 64. b4.

E 2330012 0.0 7.1 14. 14 .1 14.3 14.3 74.3 4.1 74.3 74.3 79.3 74.3 14.1 74.3 14.3 74s1GE 180001 72.6 74.7 74.7 74.1 7.9 74.9 74.9 4.9 144 74.9 74.9 74.9 74.9 74.9 74.9 7.9oF loOQOl 72.8 74.9 74.9 74.9 75.1 75.1 75.1 75.1 75.1 75.1 15.1 175.1 75.1 75.1 75.1 75.1

[f 14000 1 74.3 16. 76.4 7. 76.7 76.7 7b.7 76.7 76. 7b.8 768 7.8 7b.8 7 76.8 76.8Of I 0001 78.6 80.1 80.7 80.7 80.9 80.9 80.9 80.9 80.9 81.3 81.0 81.0 81.0 81 . 1.0 81.1

GF 1100110 81:9 84.1 8 ..1 84.1 84.3 84.4 84.4 84.4 . : 8 .. 84.6 84.46 84. 84.b 84.b 6 .bbr 90U0 81.8 85.1 86.2 8 6.4 86.6. 6 .6 86.6 86.6 86.7 86.7 8b.7 86.7 86.7 b6.7 6E*1

OF 80OON 8.88. 88.6 8.7 88.7 88.7 88.7 88.8 88.8 88.8 88.8 88.8 88.8 a 8.8

f 70001 86.7 89.1 89.2 89.2 89.4 89.6 89.6 89.6 89.6 89.7 89.7 89.7 89.7 89.7 89.7 By.7G 60001 87.9 90.4 90.6 9u.b 90.8 90.9 90.9 90.9 90.9 91.0 91.0 41.U 91.0 91.0 91.0 91.3

OE 50001 89.9 92.4 92.6 92. 92.8 92.4 92.9 42.9 92.9 90.0 90.0 90.0 93.0 90.0 93.0 41.0F 45001 92.7 94.2 44.4 94.4 94.7 94.8 94.8 94.8 99.8 94.9 94.9 94.9 94.9 99.9 44.4 9499OE 90001 92.7 95.3 95.7 957 95 960 9.0 96.1 96.1 96.2 96.2 96. 96.2 9.2 96.2 9.?GE 35 01 93.0 95.7 96.0 96.3 96.2 96.1 96.3 46 96.4 96.6 96.6 96.b 96.6 96.6 96.6 9b.bOF M001 9S.9 96.8 97.2 97.2 97.4 97.6 97.6 97.7 97.7 97.8 97.8 97.8 97.8 97.8 91.8 91.8

A 25001 9.2 910 97.4 97.9 97.1 97.8 97.8 97.9 97.9 98.0 98.0 98.0 98 0 98.0 98.0 9b.1GE 20001 94.8 97.3 97.8 91.8 98.3 98.3 98.1 9898.3 98.3 98.5 98.3 s 8.S 9b.3

0. 1800. 99.6 97.8 47.9 97.9 98.2 98.2 98.2 98.3 98.3 98.4 98.4 98.4 98.4 9h.. 98.4 98.4G l53O0 94.8 97.7 98.3 98.1 98.1 98.4 98.4 98.6 98.6 98.7 98.7 98.7 98.7 98.1 98.7 95.b

GF 12001 94.8 97.1 98.1 98.3 98.3 96.4 98. 98.6 98.6 98.7 98.7 98.7 98.7 98 98.7 9b.1

OF IOO 94.9 97.8 98.2 98.2 98.6 98. 7 98 98.8 988 98. 9 98.9 98.9 98. 9 98.9 98.9 98.9UE 9001 95.1 98.0 98.4 98.. 98.8 98.9 98.9 99.0 99.0 99.1 99.2 99.1 99.1 99.1 99.2 99.1OF 8001 95.2 98.0 98.4 98.4 98.8 98.9 98.9 99.0 99.0 99.1 99 99 99.1 99.2 99.1 9v.1

OE IuOl 95.1 98.U 98.6 98.0 98.9 99.0 99.0 99.1 99.1 99.2 99.2 99.2 99.2 99.2 99.2 99.2

OF 6001 95.2 98.33 98.0 98., 99.1 99.. 99.2 99.3 99.3 99.4 99.4 99.4 99.4 99.4 99.8 99.9

(I 5001 95.2 98.1 98.8 98.4 99.3 99.4 99.4 99.6 99.6 99.? 99.7 99.1 99.7 99. 9.7 94.7G 4o 95.? 981 98.8 98.4 99.9 9.4 94 99 99.6 99.7 99.1 99.1 99.3 99.1 99.7 95.7OF 1001 95. 98.1 99.1 99.2 99 99.8 99.8 99.9 99.9 O0. 200.0 100.0 200.0 100.0 13.0 113.3OF 2ou 95.2 98.1 99.1 99 99. 99 99 99.8 99.9 99.9 20.o I0.0 200.0 I00.0 100.0 00.0 1313O E 0U01 95.2 98.1 99.3 99.2 99.1 99.8 99.9 99.9 99.9 10.0 20.0 10 0.0 3l .0 100.0 lO.O 1..3.

OI I4 95.2 98.1 99.1 99.2 99.7 99.8 99.8 99.9 99.9 2000.0 200.0 0.0 200.0 10. 1(10.0 300.0

•. . . o . o. oo . .. . .. . . . . . ........... o... ... oo....o * ... ... : ..... .. : . .. .o . . . ...... 99... .... . .

131AL NUMBER OF OBSEVATION5: 9jo

6tUd0t CL IM4OLOUS BRANCH "LHCLNIAGt FwfwUENCY OF ULCUWRLNLL OF LIL|ING VS.J% W!8bIL IIUSAF I IAC FR0 noM HOUR 0L[YOBSRVAI0.A|. WEATH(R SERVICE/MAC

SI 81ON NUMBER. 127855 S11104. N7!: FAIRCHILO AF WA PLRIOU 5F 12C4:. 15-*4

C[lLI1N0 V1518111T9 IN 578771U I elLS

1 I GE 6 G fC 01 08 07 G G f 1 f, (7 GE A U L ofLEX I 1 6 5 1 2 112 2 1 1/2 1 1/4 1 51'4 5/8 11 2 /lib II/4

. ......... . . . .. .. . .. .. . .. .. .. .. .. . .. .. ... .. .. . . .. . . . .. . . . .. . .. . . .. .. .. .. .. .. .. .*. . .. .. .. .. . . .. .. .. .. .. .. . .. . .. .. .. .. .. ..

NO CE I L 59 .1 60 .2 60 . J bu .. 60 .b 60 .b 60 .6 60 .6 o 0.6 60.b 60.b 60.b .3 .6 bj.6 " -b b 3.b

UE I00001 O66. 67.4 67.1 6'. b.1 68.1 68.2 68..2 6..2 68 2 68. 22 68. 2 6 68. 6h.I58 180001 66.0 67.. b9.7 67.8 b8.1 68. 6?8. 2 .2 6 . 6 68. 6. . 2

E I60001 66. 1 67. 67.8 61.8 6.. 66.2 68.1 68. 68.1 68.! 68.. 68.1 68.3 68. s 8.5 61.36E 14000| 67.7 6g.1 69.3 69. 69.9 69.9 70.0 70.0 70.0 0.0 70.0 70.0 73.0 7J.0 I.0 1.J6E 120001 1.1 72.7 72.9 7.1 73.4 73.4 13.6 73.6 13.6 73.b 7.6 73.6 7 .6 71.b 3.6 13.6

GE 10001 74.4 76.a 76.2 76.6 6.9 76.9 17.0 17.0 11.0 77.0 77.0 77.U ;1. 11.2 77.0 37*jGE 90|00 76.3 78.0 78.2 78.b 7 8.9 79.u 79.1 79.1 19.! 79.1 79.1 19.! 4.1 1 79.1 79.3 'I.'GE 8000 79.0 80.1 80.9 81.2 81.6 81.1 81.8 81.8 .8 8 81.8 81.8 81.8 81.8 81. 1.8 81.8SE 7000| 80.! 8.8 82.0 82.3 82.7 82.8 82.9 82.9 82.9 82.9 82.9 82.9 82.4 82.4 8?.9 42..SE 600Q1 1.6 83.0 87.6 80.8 84.2 84.0 84.4 84.4 84.4 8.4 86.4 84.4 84.4 89.4 04.6 9 4

E s0001 84.0 8,.9 86.1 86.4 86.8 86. 81.0 8 1.0 81.0 87.0 87.0 801: 87.0 87.0 87.0 hI.2GE 45001 86.0 97.9 88.! 8.. 88.8 88.4 89.0 84.0 89.0 84.0 b9.0 89.0 89.0 8.Q .9.0 8.2GE 4000( 89. 1 9.?7 1.9 92.2 92.6 92.)1 92.8 92.b8 92 .8 992.8 9.8 92. 42. 924 .8 4.UE 35001 91. 93. 1 93.3 93.1 94.0 94.1 94.2 94.2 94.2 94.2 94.2 94.2 94.2 94.2 94.2 44.2(F 3000 92.7 94.9 95.1 95.4 95.8 95.9 96.0 96.0 96.0 96.0 46.0 96.0 96.0 9b.0 U b.0 4b.U

E 2550U 93.2 95.7 95.9 9652 96.6 96.1 96.8 96.8 96.8 S6.8 96.8 96.8 96.8 96.4 46. 9.SE 20001 93.9 9b. 96.6 97.2 97.6 97.8 97.8 97.8 81.8 97.8 97.8 97.8 97.8 91.8 7.8 61.8SE 18001 94.! 96.9 97.1 97.6 97.9 96.0 98. 1 9 98. 98 8.1 98.! 98.! 98.! 8.1 9.1GE 01 94.3 9.! 91 97.8 98.1 98. 98.3 98.1 9.1 9 8.3 98.3 98.3 98.3 Y8.3 4.sGE 12001 9.4 97. 97.7 98. 98.4 98. 9 98.7 98.7 98.7 48.7 48.7 98.7 46.7

SE 10007 94.7 9..9 98.! 96 98.9 99.0 99. 99.! 99.1 94.! 99.1 99.1 99. 99., 94.! 49.3bE 9007 94.7 91.9 98.1 98.6 98.9 99.0 99.1 99.! 99.1 99.1 99.1 99.1 94.! 99.3 99.! 99.3

SE 8001 94.9 98t.1 98.3 98.8 99.! 9.2 99.3 49.3 99.3 99.1 99.3 99.0 49.3 99.3 99.3 9,.3GE 7001 94.9 98.2 98.4 96.8 99.2 99:1 99.4 99.4 49.4 99. 999.. 99.4 99. 9 99.4 44.4&E 600 94.9 98.2 98.6 99.1 99.4 99.1 99 997 99 99 99. 1 99 99 99. 99.7 99.1

SE SuoI ".9 98.2 98.6 99.1 99.4 99.6 99.7 99.3 99.3 99 99 9.7 99.1 99.7 99.7 49.1 99.7SL 4001 94.9 96.2 98.6 99.! 99., 99.7 99.8 . 99.9 99.9 99.9 99 9 9.9 94.9 49.9 49.9571 1 94.9 98.2 98.6 99.1 99.6 99.7 99.9 100.0 130.0 100.0 1 09.0 100.0 103.0 100.0 100.0 19v.?SE 2001 94.9 98.2 98.6 99.1 99.6 99.7 99.9 100.0 10.0 103.0 100.0 300.0 100.0 300.0 300.0 |30.0GE 7007 94.9 98.2 98.6 94.1 99.6 99.7 99.9 100.0 100.0 0.0 00 .0 10. I 0 30.0 100.0 122.3

.E OD1 94.9 99.2 98.6 9.! 99.6 9.7 99 .9 .0 100.0 i00.0 100.0 100.0 1O0.0 700 . 100.0 1 .0

.. .. . * . *.... ......... . .. ... . .... .......99:b. .. . . . .. = . . .. . . . .... 99 ...... 99: ..... .....fl : ... . .. . .

108L NUMBER OF 08ERVATIONS: 930

S

m,

GLOBAL CLImAMOL06Y BRANCH P8CNIA t FENE nNLY Of OL(dPt1 OFNLE Of CC[LIN wEkS5 VISIbILiTfUSAF I IAC F1R0M HOURLY 0 8SEA8I10NSA IR WEA THE R SERVICE/MAC

tIAT1ON NUM e CA 78S5 STILION NA1[ f819CHLO A8 e& PIRiOU OF RECORO: 75-b4

MONTH: SILP H0O USILS|II 9,f-1 100.... .... ... .. .. ,.... .... ... .... * .. .... ... ... ... o... .,. .o, ... .. .. .... .... o . ............ ... .... .... ...

IN I 0L G E GE (r GL 01 GL G E GL Of OL O GL L G AFE I I c t 4 3 Z 3 1/ 12 1 1/4 1 0/ /I 8 /2 S18 ]14

..... ,.... .............. o.......... .................... ........ *.....................o......o......,.............................

NO CLII 65.6 66.3 66.4 66.6 bb6 6b.b 66. b 66.6 b6.6 6b.6 66.6 6b.6 6b.b bu. 06.6 bb.b

C 200001 13.7 72.6 72.1 72.8 12.8 72.l 12.8 72.8 72.8 72.8 72.8 72.8 12.8 72.8 12.8 1.sbE 180001 11.7 72.6 72.1 72.4 12.8 72.8 72.8 72.8 12.8 72.8 12.8 72.8 12.8 72.8 12.8 72.8bE l6oo01 71.9 72.8 72.9 7.J 70.0 73.0 73. 0 73 71.0 70.0 73.0 71.0 73.0 73.0 73.3bE 74OOl 1.3 76.2 75.3 75.4 75. 15(4 75.4 75.4 75.I 75.4 75.4 71.4 4 7 5.4 7.4 1.4 15.Cf 820001 17.3 78.4 78 78. 74.7 187 78.7 3 . 18.77 7. 7 78. 78.8 38.8 71.8 1.8

GE 100001 81.1 82.2 82.3 82.4 82.4 82.4 82.8 82.4 82.4 82.4 82.6 62.b 82.6 82.6 82.6 62.Cl 9000I 82.1 8 83.9 84.3 84.0 840 84.0 84.0 84.0 84.0 84.3 84.1 84.3 84.1 84.1 84.1

fE 80001 85.9 87.1 81.2 81.6 87.6 87.6 87.6 87.6 87.6 81.6 87.7 87.1 87.7 87.7 87.7 87.7LI 70001 87.9 89.3 89.6 89.9 89.9 899 89.9 89.9 88.9 89.9 90.0 90.0 90.0 90.0 90.0 93.j

E 60001 89.3 90.8 91.0 9I.3 91.0 9 .3 9. 3 91.3 93.3 91.3 91.4 91.4 91.4 91.4 91.4 91.4

(I 50001 90.2 91.1 91.9 92.2 92.2 92. 2 92.2 92.2 92. 92 92.2 923 92. 92.3 92.0 42.3 92.3CE 45C01 90.8 91.9 92.1 92.4 92.4 924 92.6 92.6 92.6 92.6 92.7 92.7 92.7 92.7 92.7 92.7

"f 40001 93.3 92.8 93.0 93.3 93.3 93. 3 93. 4 93.4 93.4 93.4 93.6 93. 93.6 91.6 93.6 93.bCE 15D01 91.6 93.0 93.2 90.6 93.6 93.6 93.7 93.7 9317 93.7 93.8 93.8 90.8 93.8 90.8 93.4GE 30O1 92.0 93.6 93.9 94.2 94.2 94.2 94. 3 94.3 99.3 94.3 94.4 94.4 94.4 94.4 94.4 4 .4

GE 25001 92.6 94.6 95.0 9 3 95.0 95:4 95 4 .4 95. 95:6 95:6 90:6 90.6 : 90.

(E 180 0ic 9 2.7 94.7 95.1 95.4 95.4 95.4 95.6 95.6 95.6 95.6 95.7 95.7 95.7 95.1 96.7 95.7CGE ISOI1 9?.7 95.0 95.4 95. 95.8 95.8 95. 9 95. 95.9 95.9 96.0 96.0 96.0 96.3 96.0 8b.0

12060 92.9 95.9 92 2 9 9 3 96.3 96.3 9b.1 46.3

Cf. o001 93.3 96.0 96.4 96.8 96. 8 96.8 96.9 96.9 96.9 96.9 970 97.0 97.0 97.0 91.0 97.0*E 9001 93.1 96.1 9b.7 97.3 97.0 97.0 97.1 97.1 91.1 97.1 97.2 97.z 91.2 97.2 97.2 9?.2GE 8u0 91.4 96.3 97.0 97.3 97.3 97.3 97.4 97.4 97.4 97.4 97.6 97. 97.6 91.6 91.6 97.6

E 7loo 93.6 96.4 97.2 97.6 97.6 97.6 97.7 97.7 97.7 97.7 97.8 97.8 97.8 91.b 91.8 97.86E 6001 93.6 96.9 97.3 97.8 98. 0 98 . 98 98.1 98.1 98.3 98.2 98.2 98.2 98.2 98.2 98.2

6t soul 93.6 9bb 97.4 98 98 98.2 98.3 98.3 98.3 98.3 98.6 98.6 98.6 96.6 98.6 96.7I. 4001 93.6 96.7 97.6 98.1 98.3 9. 98.4 98.4 98.4 98.4 98.8 98.8 98.8 98.8 98.8 9.9

CC 3001 91.6 96.8 97.8 98.3 98.8 98.8 98.9 99.1 99.1 99.1 99.8 99.8 49.8 99.8 99.8 99.9

fE 2001 9 .6 96 .9 97.9 98.8 98.9 98.9 99.0 99.1 99.2 99.4 99.9 99. 99.9 99. 99.9 303.3GE 1001 93.6 96.9 91.9 98.4 98.9 98.9 99.0 99.2 99.2 99.4 99.9 99.9 99.9 99.9 99.9 100.0

Cf 01 93.b 96.9 97.9 98.. 98.9 98.9 99.0 99.2 99. 99. 99 9. 99 49. 9 99.4 49.9 330.0.. o...........°.. .... .. . . .. °.. .. .. . ,. .. ° . . . . ° ° . . ... . .. . .... .. ....2 ..... 9" ..... o. .. . .... ...

OTAL NUMB8R OF OBSERVATIONS: 920

*6

GLO8L CA:1810u1b 888NCH 'LRCINIAfI FREAULNCY Of OCCuRINL OF CEILING VERSUS V151bI1IIuSAFE7LC F OUM HOURLY 0OSERV8IONSAIR 1fAIHR SERVICE/MAC

STAION NUMBER: 711855 STATION NA48: FAIRCHILD Afb WA PERIO() 34 RECtub: lS-b4M0141H: OC HOURGILSII: AtLl

CELN14, VISIBILITY IN SIAUTE MILLSIN b GE G G I L GL GE f E G GE &L bi SE 0

FELl I1 b 5 e I /12 2 11/2 1 1/4 1 3/4 5/8 £12 Slt I/4............................ .... ................. •........................................................... .............

NO C{lL I '4.0 5.6 5S.4 66.2 56.4 56.5 56.6 5b.1 5b.1 56.8 56.9 57.0 17.2 71 51.5 n.j

GE 2U000: 60.1 61.8 62.1 62. b 2? 62.? b2.9 62.9 61.0 61.1 61.1 63. 3 6 .6 61.b 65.:4 4.1GE 18C'0 61.0 62.8 63.1 61.9 61.6 61.7 61.9 61.9 69.0 64.1 :4.3 64.3 64.6 b.6 L4.b 65.1GE InISol 61.2 6 68640 64.1 . 64. 64.4 64.5 64.7 64 d 5t,0 65.5fE I 201 .2.8 64.1 bS..B S.1 S b 66 .2 bb.2 66.4 66.5 6bb.8 bT.GE 12D00 67.0 69.0 69.3 69.6 69.9 69. 70 10. 70.2 70.2 70.4 10.6 70.6 70.8 10.4 1.1 71.6

GL I 00o0 11.2 7.3 1. 14.J 14. 14 4 14.5 74.6 14 .6 48 74.9 1a.0 75.2 16.3 75.6 7L.JGE 9005 72.8 15.0 75.1 16.7 76.0 76.1 76.1 76.1 76.4 76.6 76.7 76.7 16.9 1,0 1.2 77.7

uE 80005 16.9 78.2 0.? 79.3 79.4 77.5 19.1 199_ 79.8 14.9 80.1 80.1 80.1 80.4 8.7 41.2GE 700| 79.0 81.6 92.0 82.* 82.8 h..8 81.0 1.1 81.1 81.1 81.6 81.6 81.1 83.8 04.1 94.6LE 00o1 80.6 81.2 81.7 84.1 84.5 84.5 64.1 84.8 84.9 85.0 85.2 85.3 84.6 86.6 8I. 86.1

GE soocj 82.4 8S.2 85.7 86.1 .8b4 86b5 86.7 86.8 86.9 87.o 87.2 81.1 81.5 87.6 81.8 96.1GL 4S0 82.9 85.7 86. 2 1 871 81.4 87.6 81.1 81.8 88.0 84.1 89.1 9:.8GE 40605 81.8 86.6 81.1 87.4 81.8 87.4 88.1 88.2 88.2 88.4 89.6 98.6 88.8 8.4 89. 1 .7GE 16005 84.1 87.1 87.8 84.2 88.6 88.7 88.9 89.0 89.0 89.2 89.6 86 .9.1 40.0 /3.5UE 1005 6.1 88.3 89.0 84.5 89.9 90.0 90.2 90.' 90.4 90.6 90.8 90.8 91.0 91.1 91.4 91.5

G G 261OI 86.7 88.9 89.6 9. 90.6 90.b 90.9 91.1 91.1 91.1 91.5 91.5 91.7 1.8 92.1 92.b( 20005 86.2 89.6 90.1 90.6 9.1 91. 4 91. 91.8 91.9 92.1 92.2 92.1 92.5 92.6 92.8 S.1

GE 18005 86.1 89.1 90.4 90.9 41.4 81.6 81.8 91.9 91.9 92.2 92.1 92.4 92.6 9t.7 42.4 43.4GE 16001 86.6 90.2 90.4 93.5 42.0 92.1 2.U 9 .. 9.I

G E 1 2 G 0 1 8 . 9 9 . 6 9 1 . 4 9 . 9 9 . 6 9 2 . 6 2 9 9 . 1 9 3 . 1 9 . 4 9 1 . 6 9 1 . 6 9 1 . 8 9 1 . 9 9 . 1 9 '.

G E 0 0 0 £ 8 . 1 9 1 . 2 9 2 . 0 9 2 .9 4 1 . 1 9 . 4 9 . 7 9 .9 9 4 0 9 9 9 . 9 . 4 9 4 . 1 9 . 8 94. 0 5 . 6

G E 9 0 0 1 8 1.6 9 1 . 1 9 . 2 9 . 8 9 . 6 9 3 . 6 9 1 9 9 4 1 8 . 2 9 . 4 9 . 6 9 . 1 9 . 9 9 5 . 3 9 . 1 b5. R

6E 8001 81.7 91.7 92.6 93.1 94.1 94.2 94.6 947 94.7 96.0 96.2 95.3 95.5 96.b 9.8 4L.4

GE 700 87.8 91.9 92.9 91.5 94.1 94.4 94.1 94.9 95.0 95. 2 9 6.6 96. 95.8 95. 96.1 91GE 60O 81.9 92.2 91.1 93.8 94.7 94.1 95.1 95.1 96. 4 95. 96.9 95.9 96.2 Q6.1 96,.6 97.7

(A SunS 88.0 92.4 91.4 94.1 9S.1 94.1 96. 95.7 96.8 96 .3 *W .4 9b 9 7 9 6.8 97.3 .1,GE 4005 88.1 92.6 91.6 94.4 95.4 95.5 95.9 96.2 96.3 96.6 96.9 97.0 97.2 91.1 .7.1 44.1GE 105 88.1 92.7 91.7 99.6 94.6 95.7 96.1 9b 4 96 96.9 97.3 97.3 .7.6 91.8 44.2 48.9GE 2005 88.1 12.l 91.7 94.6 96.7 96.6 96.2 96.6 96.1 91.1 97.4 97.6 91.8 98.0 98.6 44.6GE 2001 88.1 92.1 41.7 99.6 vS.1 96.8 96.2 96.6 96.7 97.1 97.6 97.6 91.9 98.1 48.1 94.9

E I L 8 8 . 1 9 2 .7 9 . 1 9 9 . 7 9 56 8 9 6 .2 96 .6 9 6 .1 9 7 .1 9 7. 9 7 .6 9 7 .9 98 .1 9 8.1 1 .3 .3

............... .. .. . * ..:... .. , ..... ...:1 ... . ..... *..........,.................. . . . . . * .. . . . . . . . . . . . .

O1AL NUMBER OF OBSERATIONS: 7440

Ilm

GLOBAL CLIMAIOLOGY BRANCH 'EkCENIAG1 F73w JNCY 0F UCCUNRRNCE OF CfILING VIRSuS VIIBhILITYUSAF01AC FROM HOULY OBSLRVAAIONS

A IR 4.A8HEW SIR'V C[/MA

SIA1I0N NUMBLR: 727805 AION N :.1 1 FAIRCHILO 81FB WA PL1OO OF RC3R0: 75-b4MONTH: NOV HOURS(LS5J: 00013-0200

CE~~~ IE 1M IIIILI IN Cl f MLSIN I UL G 61 6f GE G L bt G G6 GE GL (E GL 6t G GEFEET I I I. 5 4 3 1 1/2 2 112/ 1 1/4 1 5/4 5/8 1/2 5/1Ib 1/4

N0 CElL I 34.6 3S.7 36.u 56.8 57.1 37.1 37.1 37.7 37.7 38.3 39.3 39.b 40.0 4.2 91.8 42.b

GE 210O0 37.4 38.9 39.2 40.J 40.3 40.3 40.3 40.9 40.9 41.6 42.6 42.8 43.2 43.4 45.0 45.8GE 18UOG 38.4 39.9 402 41.:3 41.3 1.3 41.3 41.9 41.9 42.6 45.6 43.8 44.2 44.4 46.0 4b.8

G 160001 38.6 40.0 40. 3 41.1 41.4 91.4 41.4 42.0 42.0 42.7 43.7 43.9 44.3 44.b 46.1 40.901 14OD01 39.3 40.8 41.1 41.4 42.2 92.2 42.2 42.8 42.8 4.9 44.4 44.7 4.1 6.9 47.7GE 12CU30 9.4 41.4 1 44.2 40. 4.3 40.3 41.3 45.9 45.9 46.b 47.6 N7.8 48.2 48.4 50.0 50.8

GE 10001 452 46.9 47.2 48.1 48.9 48.9 48.6 4.I 49.1 49.8 00.9 51.1 51.6 51.8 53.3 5.bE 9000 46.4 48.2 48.6 49.94 9.4 49.9 50.0 50. 6 00. 51.2 52.4 5.7 53.1 55.3 54.9 55.7GE 80001 49.8 01.6 01.4 02.8 93.2 03.2 03.3 03.9 03.9 04.7 00.9 06.1 06.6 06.8 58.4 S9.2GE 70001 03.7 55.o 00.9 O.8 07.2 07.2 07.3 07.9 07.9 08.9 60.2 60.4 60.9 11.3

82.8 0

L..GE 60001 04.8 57.u 07.3 Oa.2 08 8.. 08.8 09.3 09.3 60.3 61.7 61.9 62.3 6.6 64.2 69.0

GE 5001 07.9 60.9 60.8 61.7 62.1 62.1 62.2 62.8 62.8 63.8 60.1 60.3 60.8 60.5 67.7 b6.GE 40001 5.7 61.4 61.8 62.7 63.) 63.1 63.2 61.8 63.8 64.a 66.1 66.3 66.8 67.0 68.7 64.4GE uo 59.1 62.2 62.8 635.1 64.3 64.3 64.6 60.1 60.1 66.1 67.9 67.3 68.1 68.3 70.0 70.8GE 3001 09.9 63.1 63.8 64.7 60.4 60.4 60.7 66.2 66.2 67.2 68.6 68.8 69.2 69.4 71.1 31.9GE 30001 62.0 60 6 6 67.9 7 1.9 72.1 7.9 74.7

01 2500! 63.3 67.1 68.1 69.3 70.7 70.7 70.9 71.4 11.4 72.6 73.9 74.1 74.7 74.9 6.7 77.4

5,1 20001 69.0 68.4 69.2 70.6 71.9 71.9 72.1 72.7 72.7 73.8 75.1 70.3 70.9 76.1 77.9 78.7* 01 18 a1 69.3 68.9 69.7 71.3 72.3 72. 3 2.6 73.1 13.1 74.2 70.6 7.8 76.3 76.6 74.3 79.101 10001 65.3 70.3 71.1 72.6 73.9 73.9 74.4 74.7 74.7 70.8 77.1 77. 78,0 78.2 60.0 80.8bE 1200l 65.6 70.4 71.8 73.2 74.6 74.6 74.9 70.4 10.4 76.6 77.9 78.2 78.8 74.0 80.8 81.

GE 10001 66.0 71.4 72.7 74.1 70.4 70.4 70.9 76. 76.4 77.8 79.1 79.4 80.0 80.2 82.0 82.8GE 9001 66.4 71.9 73.3 79.3 7 76.2 76.2 7 6 77.2 72 78.6 79.9 80.2 80.8 81.3 82.8 83.0GE 8001 66.9 72.3 1.8 70.3 76.1 76.7 77.1 77.8 77.8 79.1 80.4 80.8 81.3 91.6 83.3 84.1or 7(5031 67.1 72.9 74.4 76.3 17.5 77.3 77.8 78.4 78. 79.8 81.1 81.4 2.0 82.2 81.0 64.801 6001 67.7 73.8 70.3 77.3 78.3 78.6 79.0 79.7 79.7 81.1 82.4 82.8 83.3 83.6 805 86.1

01 5so 68.1 74.4 76.0 77.7 79.4 79.7 80.1 81.2 81.3 82.n 84.1 84.4 80.1 80.4 87.2 88.3bE 40o 65.7 70.8 17.3 79.2 81.6 81.8 82.2 83.8 84.0 80.6 87.0 87.4 88.1 88.4 90.2 91.101 3001 69.0 76.6 78.2 80.2 82.7 82.9 83.4 80.4 80.8 88.1 89.8 90.3 91.0 91.9 95.4 44.9GE 2Go1 69.0 76.6 78.2 80.2 82.7 83.0 83.8 86.2 86.6 89.3 91.0 91.6 92.4 93.1 45.7 98.1GE lOI 69.0 76.7 78.3 80.3 82.8 83.1 83. 9 86.4 86.8 89.7 913 92.0 92.9 93.6 96.6 99.7

GE 01 69.0 76.7 78.3 80.3 82.8 83.1 83.9 86.4 86.8 89.7 91.3 92.0 92.9 93.6 96.6 100.0

TOTAL NUMBLR OF 080 87RVAIONS: 930

.I.3

GLOBAL CEIMIOLOGY BRANCH 'L[[NTAGL F[LDENCY OF OCCURRENCLE OF CRLNG 874SJ5 bI.IIuSAf[TAC FR0 HOURLY ObSLRVATIONSAIR 4EATHEW SLRVILE/MAC

STATION NUM R: 721855 STATION NAIL: FAIRCHILD AFB WA PLRIOU OF PECOU: IS-bkMONTH: NOV HOURSILSTI: 0100-0500

CE ILIN VISIBILITY IN STATUTE MILLSIN I GL GE GL GE OF GE GE GE GE GE GE G[ GL 6E GE fE

FEEI 10 6 5 H 3 2/ 2d z 1 ll? 11/4 1 3/4 5/b 1/2 5/16 I/4 3.*........ .......... .... ........... .. ,o.... ...................... ....... ... o.. o. * . ................ *.................. o

NO CETL I 29.2 10.0 30.2 30.i 31.1 31.2 31.6 32.0 32.2 12.1 33.1 31.1 3.6 33.9 34.9 35.8

GE 200001 31.6 32.6 32.8 33.3 33.7 33.A 34.1 34.6 3N48 35.2 35.7 I5.7 36.2 36. 31.6 18.'..E 180001 32.4 33.4 33.1 1 34.6 34.1 35.0 35.4 35.7 36.1 36.6 36.6 37.1 31.4 38.4 39.3GE 160001 3?.8 33.A 34.0 34. Z 3.9 35.0 35.3 35.8 36.0 3b.4 36.9 36.9 37.4 31.8 38.8 3Y.7GE 140001 33.1 34 .1 34. 3 .b 5.2 55.3 35.7 36.1 36.3 36.8 37.2 37.2 37.8 38.1 39.1 41.0GE 120001 35.8 36.8 17.U 1.2 37.9 36.0 38.3 18.8 39.0 39.4 39.9 39.9 40.4 40.8 41.8 4e.I

GE 10000I 38.4 39.4 39. 39.8 40. 40 11 41.0 41.4 41.1 42. 42.6 42.6 43 :.1 43.4 44.'k 4S.1GE 90001 39.8 40.9 41 1 4 1. 2.0 421 4 42.4 42.9 1.,1 43.6 44.2 4.2 44.8 45.I 46.1 1 1.b| 80001 41.0 44.3 44.6 44.d 45.4 45.6 45.9 46.3 46.6 41.0 40.7 4.7.7 482 48,6 49.6 SO.GE 10001 46.8 48.2 48.6 48.8 49.4 44.6 49.9 50.0 50.6 51.1 52.1 52.1 52.7 5.30 54.3 54.9bE t0001 48.3 9.8 S..2 50.4 51.1 51.2 51.6 5z. 52.2 S2.8 5 539 3.9 5.4 54.8 5SS8 56I

sl50001 50.0 52.l S2.o 52.8 53.4 53.6 53.9 S.3 54.6 55.2 56.3 5b.4 57.0 57.3 68.3 S4.2GE '5301 O.9 53.2 53.8 54. 54 .18 4 5. 55.6 SS.6 56.4 6 .6 51.7 58.2 58.6 5.6 b61.4GE 40001 52.2 54.9 55. 6 5.8 56.4 54 .6 57.0 57.4 57.7 58.4 59.6 59.7 60.2 60.6 b61.6 6.4bE 1 soo 53.6 56.3 57.1 51.3 58.0 58.1 S8. 59.1 59.3 601 61.2 63 6 622 61.2 b4.GE 303 1 54.9 58.0 58.9 S9.3 60.1 60.1 60.7 61.1 61.1 62.1 63.2 63.3 63.9 6.2 tS.2 66.1

.E 2s501 55.8 59.4 60.3 60.9 61.6 61.1 62.2 62.7 62.9 63.7 64.8 64.9 65.4 65.8 bb.8 67.E 20001 56.8 60.6 61.1 62.3 63.0 63.1 63.7 64.1 64:3 65.1 66.2 66.3 66.9 67.2 p8.2 65.GE 18UO1 $7.0 6G.U 61.4 62.. 63.2 63.3 63.9 64.3 64.6 65.3 66.4 66.6 6.1 61. 4 68.4 69.3GE 1500 67.6 61.1 63.1 63.8 64.4 64.6 65.1 65.1 65.9 66.9 68.0 68.1 68.1 69.U 10.0 7L.9(.E 12001 $7.8 62.1 63.1 64.3 65.3 65.3 65.9 66.4 66.7 67.7 68.9 69.0 69.6 69.9 70.9 71.8

6f 1000i 58.0 63.0 64.6 65.2 66.0 66.2 67.0 676 67.8 68.8 73.0 70.1 73.7 II.? 72.3 72.9GE 9901 58.4 63.9 65.4 bo.I b669 61. 7 68.0 68.6 6A.8 69.8 11.0 11.1 7.7 12.0 1.0 3.9GE 801 s9.1 65.6 b7. 68.3 68.9 69.1 10.0 10.6 70.8 1.A 1.0 13.1 71.7 74.U 15.0 75.9GE 1TOl 59. 65.9 61.7 68.3 69.1 69.9 70.8 71.3 1.6 72.6 73.8 73.9 74.4 74. 75.8 7b.1GE 6001 60.6 61.4 69.4 7U.1 71.6 11.8 72.8 13.6 13.9 75.0 16.2 76.3 76.9 77.2 18.2 7. 4

GE 5001 61.4 68. 08 711. 73 3.1 73.3 74.4 75.4 75.8 77.6 79.? 79.3 83.3 RJ.3 83.1 82.1GE 4301 62.0 69.7 73.1 12.4 74.2 74.4 75.8 77.1 7.° 79.9 82.0 82.1 BT.0 P3.3 84.4 R5.9GE Tool 62.4 70.4 72.4 71.6 75.9 76.3 77.9 79.9 80.2 83.2 85.7 85.8 0.0 8.3 89.4 9.

GE 2u01 62. 0.6 72.6 1.8 76. .8 78.4. 85.1 8.7 87.8 89.2 9L. .0 91.3GE 1001 62.4 70.6 72.6 73.8 76.3 76.8 78.4 81.b 82.0 85.1 87.7 87.8 89.3 90.7 94.1 99.9

uE ol b.4 10.6 72.6 71.8 16.1 76.8 18.4 81.6 82.0 85.1 81.7 81.8 89.1 93.7 44.1 103.3. . . . . . . . ... . . . . . . ... . . . .. . . . . . . . . . . .. .. . . .,............. • ........ 9 ... o . . .......

TOTAL NUMBE OF OBSFERATION: 9jO

A

bLOBAL CLIMIIOLOGY BRANCH -ERCENAGE FREWuLNCY OF OCCURRENCE OF CEILING WERSUS VISIBILITYUSBEETIC FROM HOURLY OUSLBBATIONSAIR LEATHER SFRBICE/MAC

STATION NUMBER: 721855 STAIION NAME: FAIRCHILD AFB WA PERIOD OF RECORD: 75-84

MONTH: NOV HOUBSILSII: ObU3-OBOJ

EIIN IGE EVISIBIlITO IN SIBTUTE MILES

IG GE GE GE GE G GE GE GE GL 58 GE GE 61FEEl I 0 C 1 3 2 1/2 2 1 112 1 1/4 1 1/4 518 12 5/1b 1/4 J......... o.o ......... ..................,..........•............... .. o, ........................... ....... .. ................ ....

NO CEIL I 24.6 25.6 26.0 26.3 27.0 27.1 27.6 27.8 27.8 2B.Z 28.2 28.2 29.0 29.J 30.1 31.2

GE 200001 27.8 28.9 29.4 29.8 30.4 30.b 11.0 31. 31.3 31.8 31.9 31.9 32.7 327 4.40 35.31 18OU0I 28.1 29.8 30.3 3. 1.3 31.8 31.9. 32.2 32.2 32. 32.8 32.8 33.6 33.6 S4.9 36.2GE ISOGO 3 29.0 30.1 30.1 31.1 31.8 31.9 32. 32.1 32.1 33.I 33.2 33.2 34.0 14.3 36.3 36.7

GE 190001 29.9 31.0 31.6 32.j 32.1 32.8 33.2 33.6 33].6 ON0 39.3 39.3 39.9 34.4 16.2 19.GE 120001 32.9 38.0 38.6 35.3 35.1 36.8 36.2 3a.6 36.6 31.U 37.1 371 37.9 1,79 39.2 41.b

GE OO001 34.8 35.6 36.2 36.1 37.3 37.6 38.0 38.9 384 39.0 39.1 39.1 39.9 34.4 81.2 4 2.GE 90001 36.2 37.3 38.0 3A.8 39. 39.3 39.8 NO.2 NO.2 93.8 41.0 41.0 83.8 41.8 43.1 44.

GE 80004 08.9 39.6 90.2 40.1 NI.3 1.6 42.0 2.4 42 4 30 93.2 4.2 4.0 44.0 45.1 4b.7GE 70001 9.3 42.8 3.4 43.9 4.b 44.8 95.2 5.8 45.9 46.4 46.7 96.7 41.4 47.4 4R.8 63.1GE 60009 42.1 93.7 4.3 44.8 45.6 45.8 46.2 46.8 46.9 41. 4 41.7 47.1 9.4 48.4 49.8 51.1

GE SOUO 94.2 b .2 46.9 483 .:8 99.3 9.9 50.0 50.2 50.2 63.1 51.1 62.9 54.K03 401 45.6 97b 48.2 48.7 49.6 49. 50.2 50.8 50.9 51.9 53.1 51.7 2.6 52.6 61.9 56.2bE 40001 46.7 98.9 99.7 50.2 51.3 51.3 5.8 52.3 52.9 53.1 53.3 53.3 59.3 64. 66.1 41.0GE 35001 91.8 50.3 51.3 51.7 52.8 53.0 53.6 54.1 59.2 69.9 55.1 55.1 56.1 b.1 51.4 58.8GE 30004 49.0 62.0 52.8 53.3 59.8 55.0 55.6 56. 56.3 57.0 57.1 57.3 58.3 18.3 59.7 b.3

GE 200i 49.9 53.1 53.9 54.9 560 56".2 56.8 57.3 57.6 58.2 58.6 68.b 59.6 59.1 ti.0 2.3GE 2001 50.2 54.3 55.1 55.7 57.2 51.8 58.0 58.6 58.8 59.4 59.9 59.9 63.9 63.J 62.3 61.1GE 18009 60.3 54.8 55.6 56.2 51.8 58.0 58.6 59.1 59.3 60.0 60.4 60.4 63.4 61.6 62.9 b 64.Gf 1500: 50.7 55. 2 56.9 51.2 59 59.2 59.9 60.9 60. 61.4 61.9 6 1.9 63.0 63.3 64.4 65.8

GE 12009 51.1 56.1 57.4 58.7 60.7 60.9 61.7 62.3 62.6 63.4 63.9 63.9 65.0 65.1 06.4 t1.8

GE 10001 51.3 56.1 58.1 59.0 61.3 61.6 62.3 63.1 63.3 642 64.8 64.8 66.9 66.0 67.3 68.7GE 9001 53.8 51.3 58.8 6U.3 62.2 62.9 63.2 69.0 69.2 65.3 65.1 66.7 66.8 66.9 64.2 6.bGE 8001 52.9 58.6 60.1 61.0 63.6 63.8 69.6 65.3 65.6 66.4 7.0 7.0 68.1 68.2 b9.6 1'.4

GE 7001 53.6 59.9 61.3 62.3 69.8 65.0 65.9 66.7 66.9 61.8 68.3 68.3 69.4 69.1 13.0 72.3UE 6004 59.3 60.9 62.7 64.3 66.9 61.2 68. 69.0 69.2 70.2 70.9 70.9 72.0 72.2 31. 75.0

GE 5004 5.9 62.2 64.1 65.4 68.4 68.8 69.1 10.9 71.1 73.1 74.0 740 75.3 15.6 17.0 1.6GE 4009 6 54 b3.3 65.6 67.10.1 00.8 11.8 13.2 73.7 76.3 77.3 77.3 78.8 79.2 81.1 82.9GE 3s0 55.9 6.0 66.1 68 b. 12.8 73.2 19.8 11.0 77.4 81.2 83.1 83.1 85.0 86.0 AB.B 91.(E 2009 55.9 69.2 67.1 69.3 13.3 13.8 15.3 18.2 18.1 83.3 85.1 86.8 88.1 84.7 93.9 98.3GIE IUI 5.9 69.2 61.1 69.1 73.3 73. 715.3 18.3 18.8 83.6 86.0 86.3 88.6 3., 94.3 300.3

GE 01 55.8 69.2 67.1 69.1 13. 73.8 15.3 78.3 18.8 83.6 86.0 86.1 88.6 90.3 94 . 13.3


I

GLOA6 (LIMAIOLOGY BRANCH PERCLNIAGE FEwUENY Of OCCURRLNCE OF CfLING VERSUS VISIBILITYUSAfFEI AC F0 HOURLY OdSERVAIION!AIR slAIHER SERVICE/MAC

tIWION NUMBIR: 721855 SATION NA4(: FAIRCHILD AF WA PERIOD OF RECORD: 16-8MONTH: NOV HOURSLLSrI: 09UC-I1U

CEl 1G RISI8ltLI3 IN STATUTE MILESI N Gi I or GE GE GE GE GE GE GE E GE E GE E GE t

FEET I I0 6 4 1 21 / 2 112 11/4 I 3/4 1 3/2 616 k/H 1.o°................ .o.............................. ..... o* ........ •............... ...................... .....................

NO CLIL f 2.15 25.4 26.2 26.4 26.8 26.8 27.3 21.2 27.2 27.1 28.0 28.u 28.0 2a.1 2. 7 26.°

GE .0000i 28.7 3.6 02.24 2.1 3.1 31.3 33.7 33.8 03.8 34.2 34.6 34.6 34.7 34.b 36.4 16.4GE t8uUO 29.2 12.1 33.0 31.2 03.9 33.9 34.2 34.3 341 14.6 3S.3 35.1 35.2 35.1 36.b0 t6.GE 60L001 29.4 12.1 33.2 3.1 14.1 14.3 04.4 34.b 14.6 35.0 3 .3 36.3 35.4 16 36.2 1b.It 140001 30.2 33.3 34.0 14. 14.9 34.9 35.2 35.3 35.3 35.8 36. 13 0b. 6.2 ,v.3 31.0 1.4GE 120001 32.9 6.1 31.0 11.3 31.9 17.9 38.2 38.3 38.3 38.8 39.3 39.3 19.2 39.3 4O. 41.4

GE iOOUOl 36.6 39.1 40.0 40:2 43.0 1.0 41.3 41.4 41.6 42.0 42.:3 4. 3 42.4 42.6 43 ' .6

bE 90001 16.6 40.2 43.1 431 4 42.3 424 4.6 42.1 43.1 43.4 43.4 41.b 43.1 44.3 44.9GE 80001 39.6 43.2 44.3 44.3 46.3 46.3 46.8 45.9 4b. 46.4 46.8 46.8 4b.9 41.3 47.1o 4.2

IF 70001 43.3 q.2 4 8.3 48.1 49.3 49.3 49.8 4 9.9 500 50.6 50.9 60.9 51.0 51.3 1.8 5.3GE 60001 44.8 44.8 49.t1 49. 51.1 51. 1 51 51.7 51.8 62.3 52.1 52.7 5Z.8 62.9 1.b 64.1

E 60003 46.9 51. 4 52.1 52.6 51.8 53.8 54.2 54.4 , 54.6 65 55.4 564 56.6 S.7 56. 56.4Of 46003 47.3 62.3 51.3 53.3 64.6 64.6 55.0 55 3 55.9 56.2 662 S6 5 6 .4 57.3 61.1

GE 40001 49.5 64.3 55.3 55.6 66.8 5.8 61.2 61.4 57.6 58.1 58.4 58.4 58.b 5.1 64.1 5 6.9uE 35001 0.1 55.1 56.1 b.1 51.9 57.9 58.3 58.6 58.3 59.2 59.6 59.b 59.7 59.8 b. b .

IE f 0o0 1 50.8 56.0 57.3 58.3 59.6 59.b 60.0 b.2 60.3 63.1 b1.4 61.4 .b 6 1.7 62.1 62.

GE 26001 53.3 56.9 58.1 69.3 60.7 60.7 6.3 61.3 . 62.2 62.6 b6.6 62.7 6.4 b3.4 04.JGE 20001 51.7 57.1 59.U 60.3 63.7 61.7 62.1 62.3 62.4 63.2 61.6 63.6 63.1 63.8 64.4 66.3GE 13009 62.3 58.3 59. 61 bU.4 62.3 2.1 62.6 62.8 62.9 63.1 64.0 64.0 64.1 64.2 64.9 65.4GE Is5fl 61.0 59.1 61.0 62.2 63.9 63.9 64.3 64.6 64.7 65.4 66.8 66.8 65.4 66.0 66.? 67.2GE 1 602 6 62.4 69.2 6. 66.1 66.8 67.0 67.3 67.9 b8.2 68.2 68.s b8.4 69.3 64.7

GE 10001 54.8 62:. 64.1 65.4 67.6 61.6 68.2 68.6 68.1 b9.4 b.8 69.8 69.4 73.3 73.8 11.36E 9009 55.6 64.0 66.4 66.9 69.0 69.0 69.1 3(.0 10.3 10.9 73.2 73.2 11.1 73.4 32.2 14.8GE 8001 56.8 65.8 67.6 69.3 71.9 13.4 72.1 72.4 12.6 1.6 71.9 13.4 74.0 94.1 74.9 15.4GE 1001 58.0 67.2 69.2 10.4 13.4 73.6 74.3 74.8 74.9 76.1 76.4 16.4 7b 16.1 1 .4 14.GE 6001 58.8 68.10.8 72.4 16.2 15.3 16.3 36.8 76.9 18.2 18.6 79.t 78.1 18.8 19.6 83.1

GE 5009 59.3 69.8 71.9 71 17.6 71.1 79.2 79.8 79.9 8.0 82.4 82.4 82.1 81.3 81.8 8.1GE 4003 69.7 70.1 73.2 15.8 79.1 80.0 82.0 82.8 83.0 R5.t 86.1 96.3 46.4 81.3 67.8 84.4GE 3009 59.7 73.1 74.8 11.4 82.3 82.8 86.1 86.6 nl.3 43.0 41.9 91.9 92.7 43.2 9I4.4 4.1GE 2001 59.7 71.1 74. 17 82.3 80.1 85.1 87.0 87.8 92.3 91.9 91.9 46.3 96.9 41.8 9.4IF 3201 59.7 13.7 74.6 77.4 82.3 83.3 85.1 87.0 87.8 92.2 94.0 94.0 96.2 96 99.3 13.

GE nI 59.7 73.7 14.8 77.4 82.3 83.3 85.7 81.0 87.8 92.2 94.0 1. 96.2 96.1 98.3 133.3

.... o . ° ° . . ° . . °. . ° o . o ° . . ° .o........°°°.........°.............. ..... . . . . . . . . . . . . . ......°

3OTL NUMBER OF OBSERVATIONS: 930

6

LOAL CLInAIOLOGY BRANCH 'Lw LNI8E FREQUENCY OF OCCURRLNCE OF CEILING VERSUS VISI ILIIVSAFLAC FROM HOURLY OdSERVAIIO6SAIR dEATIN ERIICL/MAC

STATION NUM ER: 721855 STATION NA4E: FAIRCHILD AFB WA PEPIOU Of RCORU: 75-84MUS1s: NOV U40RSiLSII: I2uU-1.4U

..... ... .. .o .o... .. • . .. . .. .. . ... ... .... ... . .. o.. .. .. .. .. ..... o ..................................... •....

ER ItING 81513LI1Y IN STATUTE MILESIN I GE G GE G GE GE GE GE GE GE GE GE (It G GE b

FEEL 10 6 5 3 2 112 2 1 1/2 1 1/4 1 1/4 5/8 112 5/It 1/ 4•...o.......o ...... ..... .,.... ..... ............ o .... .... o ...... o.... .. o .......... ...... ........ ......................... ..

NO CEIL I 24.6 27.2 27.7 2o.3 29.7 2b.7 28.8 28.9 29.0 29.0 29.1 24.1 9.1 29.1 29.! 29.2

GE 20u001 30.b 33.9 34.3 348 35.4 35.4 35.6 35.7 35.8 i5.A 35.9 15.9 35.9 35.9 35.9 36.3GE 18000 30.8 34.! 34.b 35.3 35.1 35.1 35.8 35.9 36.0 36.0 36.! 16. 1 6.I 11 36.1 Ib.

I 16000! 3.? 3. 6 35.0 35.4 36.! 3b. 36.2 3b.3 36.1 36. 36 .6 36.6 36.6 1 b 36 .6 36.1GE i40001 32.8 36.1 36.6 31.3 1T.1 37.1 37.8 37.9 38.1 38.2 38.3 38.3 38.1 18.1 1.3 3 b.4GE 120001 35.3 19.0 39.4 39.9 40.6 40.6 40.7 40.6 .0 41.1 41.2 41.2 41.2 41.2 41.2 41.3

GE 100001 39.4 43.6 44.0 44.4 45. 45.2 45.3 45.4 45.7 45.40 46.0 46.0 46.01 46.3 46.:0 46.:!GE 900 41.1 45.b 46.2 46.7 47.0 47.4 41.6 47.1 41.9 498.1 48.2 48.2 48.2 4.2 8.2 4b.GE 8000 41 .9 48.4 49.3 49.4 50.8 50.9 51.0 51.1 51.3 51. 7.7 51.7 51.7 '1.1 LI 51.8GE lOGO! 46.1 51.8 52.2 52. 53.8 53.9 54.0 54.1 54.3 5..6 54.1 54.? SM.? 54.7 54.1 54.9Ut 6 0001 48.3 53. 54.0 54.8 55.1 55.8 55.9 56.0 56.2 56.4 56.6 56.b 56.6 56.6 56.6 56.7

GE S0D 50.6 56.3 56.8 51.b 58.4 58. 58 58.8 59.0 59.2 59.3 59.3 59.4 59.4 ,9.4 54.bA 4500! 5!.? 51.1 51.t 58.3 59.2 59.3 59.4 59.6 59.8 60.0 60.! 60.1 60.2 60.2 D.2 63.3

GE 4fO! 52-9 59.1 59.6 bU.6 61.4 61.6 61.1 61.8 62.0 62. 62.1 62.3 62.4 62.4 62.4 6/.6GE 3500! 55.2 61.6 62.0 63.3 64.0 64.1 b42 64.3 64.7 64.9 65.0 65.0 65.! 65.1 tS.1 65.2

GE 00 5I8 64.5 65.! 66.3 61.4 61.6 61.7 61.8 68.1 68.3 68.4 68.4 68.6 6.6 b8. 66.1

GE 2500! 59.4 61:4 68.1 69.3 1 .4 70.6 1U.8 10.9 1.2 71.4 71.6 11.6 7.? II!° 7!.7 1.8F 20001 60.! 68.6 69.2 10.b 11. 11.8 2°b 2.2 7 2.8 2.9 129 .0 3.0 7.0 13.1

GE 18001 1.3 69.9 70.t 11. ; 71.0 73.1 3.4 11.6 73.9 1.! 74.2 14.2 74.3 7. 14.3 74.46E 1:SO( 61.2 12.6 13.b 14.9 16.0 7.1 76.6 1 71.0 17.2 1.3 1.3 17.1. 71 77. 17.6GE 12001 65.3 76.2 77.1 ?A.# 79.9 80.1 8O.b .7 B... 80.1 81. 8 81.3 81.3 81.4 81.4 al.4 91.b

sE 10001 66.3 18.1 80.: 81.4 83.0 83.2 83.7 83.8 842 84.4 &4.6 84 84.1 84.1 4.1 84.8GE 900 66.4 79.3 80.8 8 4.. 64.0 8.2 84 .1 8.8 85.2 85.4 85.6 85.6 85.1 bb.? 85.7 85.8GE 868 79.9 83.4 81.2 84.9 A52 85.8 86.0 86.4 86.1 86.9 86.9 87.0 87.0 67.0 67.1

GE io 61.0 80.6 82.2 843 85.9 86.2 86.9 81.1 876 87.8 88.0 88.0 88.! 88.!1 R.! 8.2GE 6u0 61.4 81.1 83.6 45.0 81.3 81.8 88.7 88.5 89 84.8 90.0 90.0 90.2 90.3 VO.1 93.4

bE SUi1 61.8 82.4 84.4 86.4 89.U 89.6 90.1 90.9 91. 92.1 92.4 92.4 92.1 92.9 91.0 43.1GE 4001 61.9 82.6 84.8 87.3 90.4 91.0 92.4 92.8 93.2 94.1 94.4 94.4 4g4 94.9 9S.1 95.2GE uCh 61.9 82.8 85.3 81. 91.5 2.U 91.6 94.1 94.9 9S.9 96.1 96.3 46.8 9! ° 9.7 91.8(E I 2O! 61.9 82.8 85.3 81.7 91.3 92.1 91.7 94.3 95.1 96.7 9.4 917.6 98.4 99.9 49.6 99.8GE IGOE 67.9 82.8 85.3 87.7 91.1 92.1 93.7 94.3 95.1 9b.7 97.4 91.6 48.6 99.9 94.7 133.0

L 0! 67.9 82.8 dS.3 87.7 91.1 92.1 93.7 94.1 9S.1 96.7 9 91.6 96 98.9 94.7 333.3•. ........... .. .... ,., ,.. . .. . . . . .. . , . . . . . . . . . ,. . . . . . . . . . . . .,. . . . . . . . . . . . . .

1018L NUMBER OF OBSERVATION%: 930

6

GLObAL CLIMATOLOGY bRANCH ERCLNIAGL FREUENCY OF OCCURTENLE OF CEILING VERSUS VISIBILIT rUSAFLTAC FROM HOURLY BS ERVATIONS

AIR SEATHER SERVICE/MAC

STATION NIJMER: 127855 STATION NAME: FAIRCHILD AFB WA PERIOD OF RECORD: F5-b4

MONTH; NOV HOURSLSTI: I$O0-1700

IN I GL GE GL GE GL GE GE GE GE GE GE GE GL GE GL GEELI I 1U 6' 5 3 2 12 2 1 I/2 1114 3/4 Sid 1/. Slo 1/4

....................................... ...... ,... ..... ..... .........o,....... .............. .. .. .... ......... ....... ........

NO C IL I 13.9 32.1 32.1 12.2 12.4 32.4 12.4 12.4 12.4 32.4 12.6 32.6 32.6 32. 32. 1 32.b

uE 200001 1.' 1I.V 38.9 39.5 , I , 39.3 39. 19.3 39 .4 39.4 194 39.4 3 .b 9.TGI 180001 18.0 1.A 39.9 40.3 90. 40.1 40.3 40.3 40.3 4. 440.4 40.4 41.4 4U.4 40.6 4J.1G E ool 348.b 40.1 40.4 40.6 40.9 40.9 40.9 40.9 40.9 40.9 41 . 41.0 41.0 41.0 41.1 41.2GE 14nool 40.4 42.1 42.4 42.1 41.0 41.0 43.0 41.0 43.0 43.0 43.1 43.1 43.1 4.1 41.2 41.3

G E IZ0001 44.4 46.0 46.7 46.V 41.2 41.2 47.2 47.2 47.2 41.2 47.3 47.0 47.3 47.1 41.4 41.b

G E 10000 48.3 50.4 50.b 50.8 1. '1 S'.1 511 514 51.6 51.6 51.7 S1;: I.7 51. SI.8 51.9GE 9000 $0.1 52.6 $2.1 $2.8 51.2 53.2 53.2 51.6 51.7 51.7 51.8 53A 53.8 "1.A S,9 54.5GE 80001 52.9 55.7 55.8 5. 3 56.1 56.4 56.4 56.8 51.0 51.0 51.I 1.1 517.1 51.1 17.2 53.1GE 70001 56.0 58.A 58.9 59.1 59.4 59.6 59.6 59.9 60.1 60.1 60.2 60.2 60.2 60.2 60.3 60.4GE 60001 57.4 60.4 60.6 61. 61.3 61.4 61.4 61.8 62.0 b.0 b.l 61.1 62.1 62.1 62.2 62.3

GE 50003 59.0 62.2 62.7 65.1 60.4 63.6 b.6 61.9 b4.1 64.1 b4.2 64.2 b.2 64.2 b4.3 64:4GI 4501 60.3 639 64.1 64.6 65.0 65.2 65.2 65.6 65.8 65.8 65.9 65.9 65.9 65.9 6b.o I6.lGE 40001 62.4 66.1 68 6.3 66.4 61.3 61.6 67.6 62.4 6.1 68 .1 68.2 68.2 68.2 68.2 68.3 b.( f 5 301 64.0 617. 68.0 6.4 69.0 69. 69.3 69.7 69.9 69.9 70.0 10.0 70.0 70.0 70 .1 1.2

GE 1000 oS.8 70.0 70.7 71.1 72.1 72. 4 72.4 72. 713.0 71.0 73.1 73.1 13.1 73.1 7T.? 13.

GL 25001 67.1 72.0 72.7 73.2 14.3 14.7 74.7 75.0 75.2 75.2 75.1 75.1 75.3 75.1 75.4 ?$.uGE 20001 b9.6 71.4 34.1 79.7 75.9 16.2 16.2 76.6 76.8 76.8 16.9 6.9 156.9 7b.9 17.0 17.1

GE 1801 69.8 74.8 75.4 7.J 14 13 7.1 177.7 18.1 18.3 78.1 18.4 78.4 1A.4 7A.4 18.6 79.?bE ISOI 1.2 76.7 77.3 77.8 19.4 79.8 79.9 80.4 80.7 80.7 80.8 90.8 80.8 80.8 80.9 81.GE 12O, 712.4 78.4 79.6 80.1 81.9 82.2 82.3 129 81.1 8I.1 81.2 83.2 81.2 83.2 00.3 a.4

GE 10001 72.8 80.1 81.4 82.2 84.2 94.6 84.8 85.1 :5. 85.7 85 8. 8 AS.9 86.0GE 90l 71.0 0.4 0 82.8 84.8 . 85.1 85.9 86.1 86.2 86,3 86.1 86.3 86.3 86.4 8b.bGE 8001 1.3 81.1 81.4 84.0 86.6 88.4 81.4 88.0 88.2 88.b 88 .1 88. VA.? 88.8 84.9GE 7U0 1 3 82.3 84.2 85.1 87.3 87.7 88.2 88.8 69.0 89.0 89.4 84.4 89.4 89.4 89.6 89.7GE 6001 13.1 82.9 85.2 86.2 88.1 89.0 89.9 90.4 90.8 91.1 91.3 91.4 91.6 91.6 91.? 81.8

GE 01 73.9 83.2 85.1 86.7 89.1 89.7 90.1 91.4 91.8 92.2 92.4 92.7 92.8 42.o 92.9 93.0GE 4001 74.0 83.4 9b.3 81.4 90.8 91*1 92.2 93.4 91.8 94.2 84.4 94.7 85.1 95.1 9S.2 95.3GE l00 74.1 84.0 86.3 87.8 91.2 91.6 92.9 94.1 94.7 95.4 9b.1 916. 96.8 96.8 91.0 91.2

GE 2601 74.1 84,0 86.8 88.5 9I.? 92.0 93.3 94, 95.1 96.0 97.0 91.1 99.8 98.8 94.2 99.8GE 107 79.1 88.0 96.8 88.1 RI.? 92.0 91.3 94.6 95.1 96.0 97.0 91 98.8 998 99.2 1j1j

GE 01 74.1 84.0 96.8 UA.J 91.1 92.U 93.3 94.6 95.1 96.0 97.0 97.3 98.9 99.8 99.2 155.5.. .. • ..... .. ., .. , 8,... . .. . .,,j. .... 9.. ...... . . . .... .. ,....... •. . . . . . ........... ......


I

6L13AL CLIMAOLU6W BRANCH LRCLNIA[ FRIQUENCYF UR [ fOF £6161911 8ERSUS 91|b|LITIUSAFLTAC F OM HOURLY OBS RV 11ONS

AIR *EA7HER SLRICE/IMAC

5T1AION NUMBER: 21855 STATION NA4[: 1 FAIWCHIL AFB WA PERIOD OF RECORD: 75-64MONTH: NOV HOURS(LSIO: 18O-21UU

IN | GE GE GE Gt G L G E G L GE GEl E G E GiL GL U E G[ E FFEf.L I 1 6 5 3 2 1/2 2 1 1/2 1 1/4 1 S/4 S/ l 1/2 9/ 1/4 / 1...... °o,...........o .... o.°,*.................... . ..... . o.. ,..... o..°. °° . ......................,.....................

NO CEilL I 38.4 19.8 39.b 40.2 4n.3 40.4 40.6 40.8 40.9 41.0 41.0 41.U 41.0 43.j 41.2 41.2

..E 100001 41 1 44.7 44.7 45.1 45.2 45.3 45.5 45.7 45.8 45.9 4S.9 45.9 45.9 49.9 1..1 46.111 IsnoD| 43.8 49.1 49.3

49.o 45.1 9.8 46.1 46.3 4b.4 46.5 46.9 46.5 46.9 46.9 46.6 44b

b lbcoo01 44.4 49.8 4..3 46.? 46.3 46.4 46.6 46.9 46,.9 47.1 41. 4l 1 41.1 41. 41.2 1l.2U [ 1400 49.6 47.2 41.2 47.5 47.6 41.7 47.9 46.2 48.1 48.4 48.4 48.4 4.4 48.4 48.5 46.56E zo 01 49.2 50.7 50.7 91.1 9S.2 51 91.9 93*1 91.8 51.9 91.9 91.495.9 5.9 92.1 s2.I

:E 2.8 59., 94.6 94.0 : 9.3 5 9.4 99.6 96.0 56.1 56.2 56.2 56.2 96.2 96.2 96.1 96.3bE 90001 54.9 56.3 56.3 5b 57.670 7. 97.3 97.6 51.7 57. 8 97 57.8 97.8 97.d L, .0 5b.0GE 8000 5b.8 98.8 98.8 9.2 59.8 b.0 bO.2 60. 6 b.7 60 .8 .8 bo.8 60.8 60.8 61.0 63.JGIT 1I700 59.2 61.2 63.2 61.5 62.2 62.3 62.9 61.2 63.1 61.4 b3.4 63.4 61.4 63.4 63.9 1.9E b0o1 60.6 62.6 62.8 61.2 63.8 64.0 64.? 64.8 65.0 b5.1 69.I 35 65.1 65.3 69.2 69.

1 E S0001 62.5 65.2 65.2 69.9 66.2 66.1 66.5 61.2 67.3 67.4 67.4 67.4 67. 61.4 67.9 b3.Gi 4so 6 .6 66.1 66.4 667 67.4 67.5 67.7 68.4 66. 9 8b b68686 8.6 b b6.6 b8.7 I b.I61 40I 69 .7 b8.b b8.9 69.3 10.0 710.2 70.4 71.1 73.2 71.3 11 71.1 71.3 7 .1 1 7. 11.4GE 39001 0b?. 69.9 70.2 70.9 71.5 71.7 72.0 72.6 12.1 72.9 72.9 2. 72.9 72.9 1 1.0 73.06 E 0001 68 .2 71.h 72.1 72.7 7.4 713.6 74.0 74.6 74.1 74.9 14.9 74.4 74.9 74.9 19.0 15.1

61 "S'ao0 69.U 72.9 73.6 74.4 75.4 79.6 760 76.6 76.8 76.9 76.9 76.9 76.4 76.9 D7.0 77.31 7000 1 0.0 74.6 75. 76.2 77.2 7.4 77.8 78.5 78.6 78.8 78.8 81.8 78.8 78.8 18.9 78.0

Gil 3 1 70.0 74.9 75.b 76. 17.4 77.6 18.0 78.8 78.9 19.0 79.0 14.0 19.0 7a.U 19. 79.IGi 15001 70.9 76.3 11.0 77.8 78.8 79.0 7 9.3 80.3 80.2 80.1 80 80.1 80.3 80.1 80.4 AL.4GE 12001 71.5 71.2 78.4 79.? 80.4 80.6 81.2 82.0 82.3 82.4 82.4 82.4 82.4 82.4 82.6 82.6

.1 10001 72.5 78.8 80.0 81. 1 8.1 82. I 8.2 84.0 64.8 4.4 84 .84. .4 84. 84.4 84. 84.bG 9GO 72.9 79.3 80.5 83.5 82.9 83.1 81.8 84.6 89.0 89.1 89.3 8. 89.31 9. b5.1 85.1GE 8U01 111 80.6 82.3 81.3 84.4 84.6 891 86.2 86.9 81 8.8 46.8 86.8 86.8 d7.0 67.a11 7001 73.9 83.3 82.5 81.9 84.9 .9 86.8 87. 87.1 67.4 81.4 81.. 87.4 81.7 87.7G[ 6001 73.6 83.9 81.4 84.6 86.0 86.2 87.2 88.3 88.,1 89.0 .9 89.1 89.1 89.3 89., 89.8

U: 900 74. 8 0 824 8.2 86. 8.8 87.B 89.4 90.0 90.1 90.4 90.4 90.9 90.9 90.8 91.861 4601 74.4 812 84. 4 7 8.7 88.8 93.3 92.3 92.2 92. 92.4 92.4 ,.8 92.961 3001 74.9 835 85.2 86.7 88.2 86.9 90.2 92.4 93.1 94.9 9.0 99.1 99.. 4°4 99.8 99.8

GE 2U10 14.8 83.8 89.9 81.3 88.9 89.2 91.0 91.4 94.3 94.9 96.8 97.0 91.8 9.. b 8.7G 1101 74.6 41.6 89.5 87.1 89.0 89.3 91.2 93.8 94.7 96.2 97.2 47.4 98.2 48.6 99.2 b3jJ

GE 01 74.6 83.8 89.5 87.3 89.0 89.3 93 3.8 94.7 96.2 97.2 41.4 98.2 9.b 6 9.2 3j,...... ....... ....... o.......... . o..... ... .. ...... o. ...... .. ,. . o. . .... 9 ..... I.,: ...... ..... ..... ... ....... . ..

TOTAL NUMBR Of OB8RVTIONS: 899

,Se .lr

. i mm m i mm mmmlmlmmm lI imImmmmmmmm

GLOBAL CLIMATOLOGY BRANCH 'EOCENIAGE FREQUENCY Of OCCURRENCE OF CEILING VERSUS VISIBILITYus AFTTA C FROM HOURLY OBSERVATIONS r


STAIION NUMBER: 12785 SIATION NA4E: FAIRCHILD AFB WA PERIOD OF RECORD: IS-AN

MONTH: NOV HOURStL SI: 2JO-21:l]

CE|Ii 1.VISIBILITY IN SIATUIE MILLSIN I GE GE GE 6E GE GE GE GE GE G GEL GE GE 6L GE 2f

FEET I I 6 5 N , 2 1/2 2 1 1/2 1 1/4 1 I/N S/A 1// I b N*,°*......... **. .o.... *+ ............. ...o* ..... * o,...... ..... o ..... *....... +*........................................... ..

NO CEIL 1 11.0 38.6 19.0 39.1 19.4 39.7 39.9 40.4 4O.4 NO.9 41.4 4 1.4 4.1 42.2 42.8 7.2

GE 200O1 40.8 42.4 42.9 4.3 4 3. 41.b 418 44.3 44.3 44.9 45.4 45:4 461 4b.2 4.8 41.JbE I8o0o 41.9 41.6 44.0 44.1 44.4 44.1 44.9 45.4 45.4 4b.' 46.6 46.6 47.2 41 47.4 44.1GE 60 42.0 I.?1 44.4 44.2 44.6 44.8 45.1 45.6 45.6 46.1 46.7 46.7 41. 41.4 48.0 8.2

GE 140001 42.9 44.6 46.1 46.2 45.6 46.8 46.1 4b.7 46.7 47.j 47.8 47.8 48.4 48.6 44.1 4.16E 120001 46.2 46.9 47.4 47.9 47.9 48.1 N8 .N 49.0 49.0 49.b 611.1 50.1 60.8 60.9 61.4 61.7

GE 1110001 N9.0 60.1 1.2 61. 51.9 52.1 52.N 53.0 63.0 1.b 5N.l N.51 64.8 54.9 56.4 65.7GS 9001 60.1 61.0 521 6.4 60 51.2 61.6 4. 1 4.1 64 .2 66.2 66.9 7t.1 56.5 62.5

6E 83000 51.2 54.9 55.4 66.6 56.1 6.1 567 67.4 67.4 58.1 68.7 58.7 59.1 59.4 60.0 b.2GE TODO D 6.6 68.2 68.0 69.3 69.7 60.0 60.4 61.2 61.1 62.9 62.4 b2.4 61.1 61.2 b.8 tGE 60001 56.9 59.1 59.9 60.1 6..8 61.1 61.6 62.1 62.1 61.0 6.6 b6.b 64.2 64.1 64.9 65.1

GE 00 : 9.6 62.7 b3.2 61.4 64.1 6. 4 64.9 66.7 65.7 bb. 66.9 bb.9 67.6 67.7 uN.3 6b.6GE 4601 61.1 64.6 66.1 66.4 66.2 66.6 61.0 67.8 67.9 68.4 69.0 69.0 69.7 69.8 70.4 78.7E 40001 62.4 66.1 67.0 67.1 68.0 68.1 68.8 69.6 69.6 70.2 70.8 70.8 11.4 71.6 72.2 72.4

GL 15001 b.8 61.4 b.b b .] 69.8 10.1 1.6 71.1 71.1 72.0 12.6 72.6 713.2 J.1 74.0 74.2GE AuDI t6.2 69.0 70.1 1 U. 7.1 7.11 712. 12.9 12.9 71.7 74.2 74.1 76.0 76.1 7.9 7b.I

GE 26002 65.6 69.7 72.0 71.1 72,4 72.8 71.2 74.0 74.0 14.8 16.1 15.4 76.1 76.2 17.0 77.IUE 20001 66.4 11.0 724 71.2 11.9 74.2 74 76.6 76.6 76.1 76.9 71.0 77.7 71.8 79.6 76.4GE 18001 671 71.8 71.4 74.1 74.9 76.2 76.7 7b.6 16.6 ?7.1 77.9 78.0 78.7 1.8 79.6 79.GE 1600 67.7 72.9 74.6 76.2 76.0 76.1 16.8 77.7 77.7 78.6 79. 719.2 79.9 811 80,.8 811. 1200 68.2 74.1 76.1 76.8 17.6 17.9 78.1 79.2 19.2 80.2 80.8 80.9 82.6 81.7 82.4 81.7

uE inOlO 69.8 76.0 77.0 77.? 78.4 18.8 19.1 80.1 80.8 82.4 82.0 82.1 82.8 92.9 81.7 01.9GE 900 69.2 76.4 77.4 78.2 78.9 79.2 79.9 80.9 81.0 82.0 62.6 82.7 81.1 81.4 84.2 84.4

E 8001 69.4 764 78.0 78.? 79.6 79.9 80.8 81.8 81.9 82.9 81.4 9 8 84.2 84.1 96.2 86.1

E 7O0 69.76.1 18.4 79.2 80.1 80.4 82.4 82.6 82.7 41.7 84.2 84.1 86.0 85.1 96.9 80.7G 60 69.9 76.8 78.9 79.4 80.6 810 3.2 81.7 B.8 84.8 86.1 86.6 86.2 86.1 9 7.1 81

GE 601 70.4 77.6 19.8 80.4 81.4 81.9 81.1 86.0 86.1 86.1 86.7 86.4 81.6 81.7 8q 9.4 .6E 40U 70.9 78. 80.2 81.1 82.2 82.8 84.2 86.2 86. 87.4 88. 88.2 88.9 89.0 99.8 40.1bE O 72. 1 9.4 8. 8 8. 86.2 86.8 88.8 89.2 90.? 92.8 92.2 92.8 91.0 94.0 4.6GE 20o 72.1 80.0 82.6 81.8 86.6 86.2 87.8 90.2 90.? 92.2 94.0 94.1 95.6 96. 97.1 98.1GE 111 71.1 80.0 82.6 81.8 86.6 86.2 87.8 90.2 90.1 92.2 94.0 94.6 96.8 96.4 7.9 94.9

E 01 71.1 80.0 82.6 81.8 86.6 86.2 87.8 90.2 90.7 92.2 94.0 94.6 96.8 96.4 47.9 102.3.. . .. .. .. o* 9 . 0*... ...... ** o . * . . * * . . . . * o ... * ° .. .. ..~ a. .... ... 9 . .... ... ... ... o ..

I0.8E.116M 0 O8 RSERYFI2N7: 900

SUE ~ ~ ~ ~ ~ ~ - SU .1 .2 ID.1 2 1.

.LObAt CLIMATOLOGY B6ANCH PLRLLNIAUt fkE4ULNCY OF OCCURRENCE OF CEILIN VERSUS VISIBILITYUlSA L I& AIF 4OM HOURLV OdS IRV AI 10NS

A*R .1ATHER StRVICE/MA(

,IAIION NUMBER: 1855 STATI0N NA4M: FAIRCHILO AF8 WA PRIOU f RECORD: 76-b4MONH : NOV HO URSS I : ALL

CEIING14 VISIBILITY 1N STATUTE M1L66

IN IGL GE G 6E G (J GC E L 6 E 9 El ut E GL [,L GI,1111 I II , 6 4 1 212 2 1 112 1 31/4 3 1 24 I12 /1t I /4 a

o.o .. ...... .° . .. . .. . .. .. .. .. .. .. .. .. .. .. . ..,.. . o. .. .. . .. .. .. .. .... . . .. . .. . .. . .. . ... .. .. .. .. . .. . . . .. .. ... .. .. .. .. .. .. . .. °. ...

hU CEIL 1 30.1 31.9 32.1 12.4 32.9 12.9 13.1 33.4 3 3.5 11.b 34.1 34.1 14.4 34 . 3S. 1 5.b

6E oon 14.6 16.5 36.9 37, 3 1.b IT. 1.9 38.2 38.3 38.6 18. 9 1.4 1I.1 11.. ,) 431.1G[ 180001 36.4 17.2 37.6 1,9 38.4 39.5 36.7 39.0 39.0 19.4 14.? Y V.1 .43 .01 .. 9 1. 1"E 1000 3. 37.b 317.9 38.1 38.8 o.b 39.0 39.3 39.4 19.7 40 .0 0.1 40.4 40.5 41.2 4 .b(A 140001 36.8 18.6 39.0 14.4 39,9 3V.9 40.1 40.4 40.6 40.9 93.2 1.2 41. 1 4l.b 2.3 '.2Uf 120001 39.8 41.7 42.1 42.5 43.0 43.0 43.2 43. 43.6 44.U 44.3 44. 3 44.b 44.7 4.7 45*4

G6 100001 42.9 . 46.4 46.3 46.3 6: 4 6.4 46.? 47.0 I. 7.6I 7.9 7.9 49.2 4: 4 9 9.4 2.561, 90001 44.4 46.9: 47.0 47.4 48.0 46.01 48. 4i.6 4:.9 49.1 49.5 44.6 49.9 513.0 50...5o .66 00001 47.2 44.6 60.0 60.4 1.0 63.2 61.4 51.6 61.9 5 2.3 52.7 52.9 51.1 65.2 51.4 '.bu C 7(O so. 511. 53 6.4 1.9 64.6 64.b 54.8 5.3 66.6 66.9 66. 3 6b.4 5 . .8 57.6 ,(I 60O01 1.7 54.4 54.9 55.1 56.0 6t. 6b.4 56.8 S7.0 ,7.9 57.9 57.9 58.2 68.1 59.0 64.5

1 S s0001 51.6 61 S 63.5 69.3 68.3 b9. 5* .1 59.6 69.7 60.1 b.b bo.1 61.0 61.1 61*a f2.15. 451 64.8 68.3 66.8 69.2 60.0 60.1 bO4 60.9 61.0 61.4 61.9 61.9 67.3 624. 61.1 61.,

.E 41001 6 .4 60.0 90.6 61.1 63.9 62.1 62.4 4 b 3.0 61.5 b3.9 b4.0 64.3 64.4 I5. b5.fG0 35001 67.7 63.4 62.3 62.1 63.6 63.7 64.0 64.5 64.6 65.3 6 1 . 6 . 6.0 6.3 b.8 I7U1E 3000) 69.2 b1.3 64E. 6 66 .0 6. 3 66 6 .8 66.9 67.8 3..0 68.0 67.4 6. E9. .. . 6.

00 25001 b.1 64.9 65.1 66.) 67.7 67.4 8.2 8.7 8.9 b9.4 b9.9 69.9 70.3 70.4 31.1 73.6

56 20001 61.0 66.1 61.0 67.3 69.1 69.2 69.6 70.1 10.2 70.8 11.3 71.1 71.7 1.9 32.5 3.)GE 18001 8.5 6 6 .7 67.1 68.6 b9.8 69.9 170.3 70.8 10.9 71.5 77.0 72.1 72.4 72.5 13.3 73.8(. 16001 62.4 68.2 69.3 70.2 11.4 71.6 721. 72.5 12.7 71.3 13.8 73.9 74.2 74.4 4 6.1 16.,GE 12001 63.3 69.6 70.9 71.9 73.1 73.5 74.0 74.5 74. 7 76. 76.8 76.9 76.3 76. 4 77.1 77.b

06 10001 63.8 70.8 71.2 7 7.. 74.8 76.0 6.6 76.1 76.1 73.0 77.6 17.6 78.0 78.1 78.9 74.466 9001 64.2 71.6 73.0 74.3 76.6 75.9 76.4 77.0 77.2 77.9 8.4 78.6 78.9 79.0 19.7 b6.E 6001 64.8 72.5 74.2 75.4 77.0 .2 17.9 78.5 78.7 179.6 90.0 80.1 0.6 1B.b I.3 91.8

GE 7031 65.2 71.2 75.0 16.1 77.9 791. 78.9 79.6 19.8 90.5 63.1 83.I2 81. 81.7 .2.4 9z.9GE 6001 65.7 7.2 76.2 77. 79.3 79.6 80.6 831 81.5 82.4 83.0 63.1 83.6 83.6 4.4 4..9

16 s500 b6.2 76.1 77 1. 9.4 90.6 80.9 2.0 81.0 83. 84. 86.2 86.1 8.8 86.0 b.9 87.46E 4001 66 . 76.9 78.0 79.5 82.3 82.4 93.7 850 95.4 99.9 87.7 87.8 89.4 69.7 99.9 41°.

66 3UO1 66.8 76.6 78.9 80.6 91.6 64.3 86.6 87.3 67.8 90.0 91.2 93.4 92.2 92.b Y3.8 94GE 21101 668 76.7 79.1 80.9 84.0 84.6 86.3 8.2 89.8 91.3 92.9 9.2 94. 4 95.1 96.9a 99.7GE 100| 66.6 76.7 79.1 8 8.9?40 846 86.2 88.3 88.9 91.6 93. 93.3 94.7 95.4 97.4 99.9

. .(1 .66.8 76.7 79. 80.9 940 ... 84. 82 88.3 88.9 91 . 93.3 .93 94.. 96.4 97.4 33.°3.. .. . ... ... .. :o ° . .. . °..:.. .... ° .°. ., .. ° o..... . .... . . . .... ... .., .... 4 . . . ., ,. . .*. . . . . .

T078L NUMB R OF OBSERVATIONS: 7199

0

8LOBAL CLIMAIOLOGV BRANCH PERCLNTAOL WIkLULNLY Of UCCUVNeNCL OF CIL ING VTRVUS VISIbILIIfUsAFt 8aC F O HOURLY Ob0RVAIONS&I£ .LATHBR SIRVICL/AL

SA78110 NUMBLB: 727855 SIAIION NAIL: FAIRCHILD AtB W A PERIOD OF 4C(00D: 75-64

MONTH: OEC H13095(LSI: a,300 -90J

IN G E GL u G E L G G 0 01 L G[ G L 01t 60 L I

FEE1 9 10 o N 3 2 112 2 1 1/2 l 11 I TI1 S/b I /2 5/1 1/4..... ..... ,...* ..... •.....*............ ........ ..... °.............. ...... ....................................................

NO ELIL I 2h.9 28.4 28.7 29., 311.1 3. 1 10.N 30.8 31.0 11.8 32.0 T2.U 32.8 33.0 15.1 5b.5

08 200009 29.9 11.9 31.1 12.5 53.1 13.1 3 .N 11.8 39.: 3 39.8 3.1 30.1 T.8 T. 1 18.1 1:.I1 180031 29.9 11.9 31.1 32.0 33.1 3.1 31.9 11.8 N.30 19.8 IS.I 30.1 TS.8 6.j 18.1 t.o

UL bDGE 29.9 11.4 I.7 3.. 33.1 3 3.1 3.4 11.8 14.0 3.8 35.1 10.1 15.8 36.0 sV.1 T,.tGE 193o0 13.8 31.9 12.3 33.J 33.7 33.1 14.0 3 .1 39.5 35.9 15.6 T5.6 36.3 3b.6 18.1 Nj.lUt 12EI0OJ 32.3 13.8 4.1 19.4 35.5 35.5 35.8 36.1 3. 3 37.2 31.4 11.9 38.? 3,. 40.4 1I.

GE 100D0 39.8 365 36.8 I.. 38.2 Tb.? SB.5 38.8 39.0 39.9 IO.] NO.l 41.2 41 . 3 1.4 49

01 9101 0.05 17.9 31.1 385 39.1 39.1 39.5 39.8 NO. :0 0.9 4.11 4.1 42.2 42.9 94.9 40.90,( 1 80033 34".8 41 .3 9l1.4 82.2 92. 4 9.8 93. 1 9 3.9 91'.1 994.0 94.1 9944. 1 90.8 96. 48. 1 99y. 6E 10001 9.5 91 4 9. 1.99. 1 4.0 90. 95.8 96.1 46.3 1.2 9q .9 1.4 8.5 8.1 00.8 52.3

of bo00 .2. 3 4.4 99.8 95.6 96.2 46 2 96.6 98.9 4.1 98.0 48.2 98.2 98.2 99.5 51.5 0.3

51 50009 99. 93.70 41. 4.2 98.:9 48,9 49.2 ' 9t 49. 99. 00. 00.: 19 00. 04.9 5-. N. 0I.LI 95003 4.1 91.1 98.2 98.8 99.1 7 9l 00.31 50.3 00.0 01.9 61.6 51.6 52,8 a 3.0 S.1 b.b6t 9O10 45.1 99.0 9.5 500.2 51.0 S1,0 01.3 51.6 01.8 52.1 52.9 52.9 54.1 S4.3 0b.1 01.9

oL 3)0 4 96.3 99.8 00.2 01.1 51.8 03.8 02.2 62. 7 53.0 5.8 03.8 09.9 55.2 51.2 t.T(I 0oo 4b %.1501 50. 1.3 52.8 02.03.1 01.4 5.. 07 4. 4.1 09.3 5.9 56.1 58.2 597.1

LIE 2su0 98.0 52.9 03.1 5.8 5ON.8 55. 55.1 55.9 56. 01.0 0 1.0 58.2 09.9 60.9 bl.Ut ZtuOI 98.9 52.0 03.0 09.3 00.6 55.6 56.I 6.0 5 07 1.5 01.1 51.' 09.9 59.1 tI.2 2t.1(,t 180ol 99.5 52. 53.9 59.1 56.0 5.0 56.6 5b.9 51.1 58.0 58.2 58.2 09.9 59.b bI.b b3.GE 1 409 l 9.SO 1 5 57 3 5 1.4 8.0 58.3 58.5 59.9 59.6 59.6 6.8 61.0 b.0 6..5

6E 32001 00.0 55.2 5.8 5.9 08.9 59.0 59.6 60.0 60.2 1 b 1.3 61.3 62.5 62.1 64.1 b.2

01 1(o0l 0 0.6 06.3 07.0 58.6 b.9 60.5 61.2 61.7 62.0 62.9 61.1 63. :(I b6. 6.0 :6. 69.U[ 9131 01.9 08.0 08.6 60.2 62.0 62.2 b.9 63.9 63.8 68.6 b.8 69.8 66.0 66.2 V.4 3 9.

01 8o 51.0 08.1 59.6 61.2 63.2 63.4 69.2 64.7 65.1 66.3 b.6 66.6 63.1 68.0 10.0 1D.0I3 3031 01.6 08.9 09.9 61.0 3,5 6.6 69.5 60.2 5.0 66.8 67. b1.0 68.2 68.9 10.. 11.9

01 6409 01.9 09.6 60.0 62.3 69.9 69.6 60.6 66.5 66.8 68.1 68.9 68.9 .9.1 10.1 12.4 71.9

GE 0101 52.9 61.1 62.11 63.9 66.6 61.9 68.1 69.1 68.0 11.8 32.3 1.3 13.1 3 3.1 . l.9

4,3 9009 02.9 62.6 63.1 66.6 68.6 66.9 10.9 71.6 13.9 19.9 1.0 10.0 16.9 11.3 19.1 81.3

E38 3031 01.0 63.8 64.9 61.2 10.6 T 1.1 13.5 15.9 15.1 19.1 83.0 81.0 83.3 89.2 81.2 89.9D( 2 S;| 01.0 63.8 60.1 61.9 11.9 12.2 19.6 7.1 11.6 82.3 80.8 8.58 88.8 89.9 94.2 96.8

UL IJ133 01.0 61.8 65.1 61.4 13.. 72.2 7.b 77.2 33.8 82.6 8b.2 86.2 89.1 91.0 90.1 99.

b 09 03.u 635.8 b.1 61.9 71.4 1" 2 14.6 11.2 11.8 82.6 86.2 86.2 88.7 91.0 96.1 10.3....... ,..... ...... ,°. °..., ...... :........ . ..... ... .. . . . . . .°. . . . ., . . . . . . . . °. . ....... ......

IOTAL NUM79 Of OBSERVATIONS: 910

I

GLOAL CLIMAIOLO6Y BRANCH 4

LktE'lA.U FRLE(GUNLY OF GLURRINCE Of Lt ILING V3kSUS RISIBILI!?USAF E TA C fkOM HOURLY 0SEV aIONSAIR . ATHER SERVICE/MAC

STAT1ION NUMBER: 727855 5AIION NAIL: fAI CHILO AFB WA PERIOD OF RECORD: 75-d4MONH: DELC HOUR(LSI: 0100-0503

CEI~ N RII I IN SITAlOIC JMILES*IN I G G GE I IE GE GE GE GE GE DE GE GE GL 6f GE F

FEl I 10 6 1 4 3 2 1/, 2 1 112 1 1/4 1 3/4 Sid 5/2 5/lb I /'.......................... o.............o.....................o°................................................................

NO CEE I 22.7 2%.3 2N.8 25.5 25.8 25.9 26.7 27.0 27.2 27.3 27.6 27.7 28.5 2.8 29.8 So.'

L 2U0001 25.N 27.0 27.5 2.2 28.5 28.6 29.4 29.7 29.9 10.0 50.1 10.9 1.2 ulo 12.5 35.26E 180001 25.5 27.3 27.6 28.1 28.6 28.1 29.5 29.n 10.0 10.1 70.9 30. 13.1 30. 12.6 15.5

uE 16000 5 25.5 27.1 27.6 28.1 2R.6 28.7 29.5 29.8 10.0 10.1 30.. 10.5 31.1 1. I 2. 53GE 190001 26.3 28.0 28.0 29.1 29.5 29.b 10.1 30.6 10.9 11.0 41.1 1.9 12.2 12.5 15.9 3.2GE 1l0oo 2 8 29.8 10.1 31.3 11.1 31.5 32.1 2.o 12.8 12.9 31.2 313 1 19.1 3... 1 3 1 1.i

GE 300005 30.2 1.8 32.4 331. S5 1 33.5 1.5 34.8 55.1 15.2 35.S 15.6 36.5 St.? 13.5 5Y.s

GE Uol 31.2 9.8 15.9 33 3 8 6. .8 18.2 18.9 18.3 18.9 18.9 10.8 1, 91.1 8 5-s '

GE 7001 173.0 18.8 19.4 N3. 90.56 91.0 7 92. 92 92. 4 2. 9. 91 99.0 k'. 1 . ..

GE bO 1 18.1 940.3 . b 9.9 92.0 92.9 40.9 81.8 9.40 99.1 9.9 14.5 95.4 '5.7 b.7 '7.5

GE 0 0 929 92.8 91.1 99.3 99.8 45.2 46.2 46.7 96.9 7:. 971 47.9 98.1 'kb 99.9 5bL.9GE 95001 91.5 91.8 99.0 95.3 95.9 9b.2 97.3 97.7 8.0 48.1 98.9 98.5 99.9 '49.7 (5.b 515GE 90001 92.0 99.5 95.51 90.896.8 7.41 98.2 98.6 48.8 98.9 99.2 999 5s0.2 S0.5 1.5 5. bE 35U0 12.1 95.1 95.8 96.8 97.7 98.1 99. 99.6 99.8 99.9 50.2 50.3 51.2 1S.5 S2.5 55.1GE 30001 91.0 95.8 96.0 97.) 98.7 99.0 50.3 05 50.8 50.9 51.2 53.3 52.2 52.5 55.' S,.l

GE iSOOl 99.1 97.7 98.9 99.7 00.8 53.3 52.5 51.0 51.2 53.1 51.7 51.o 59.6 59.9 55.9 55.8GE 2000 405 98.6 492 0U.5 53.8 52.2 01.8 03. 51 05 59.4 5.9 55.3 50.9 Sb.2 57.2 5.1GE 1800 9 98.7 99.9 00.6 51.9 52.3 5.9 5.9 59.6 59.7 55.1 55.2 50.0 5o.1 57.1 50.2GE 1500 o 6.2 s9.6 00.2 01. 3 03.0 53.3 59.9 55.0 55.1 50.6 .56 5.2 07.3 55.1 4 8.. 59.2GE 12001 97.9 53.5 52.2 51.7 05.3 05.9 57.3 57.8 58.1 58.3 58.6 58.1 59.6 5'.9 3.9 b1.5

GE oont 98.9 52.7 53.9 59.9 56.7 5l. 59.2 60.0 60.2 60.6 63.1 63.9 62.1 b.6 6.5 b9.GE 9005 98.7 09.1 59.8 56. 58 5 8.5 60.9 61.6 61.8 62.1 62.9 63.0 60.9 69.2 .2 b60.3GE 8UO5 4.97 55.9 56.9 58.b 60.8 63.2 3. 7 69.6 69.8 60.9 66.0 bb.3 b7.0 6.1 o.I by 9.GE 7001 99.9 56.1 57.1 59.1 61.1 63.7 69.3 65.9 65.6 66.2 66.9 61.0 61.8 68.2 59.3 73.0

E b001 00.3 57.0 58.2 59.8 62.9 62.8 65.6 66.9 b7.2 68.7 69.5 69.b 70.9 70.8 71.7 72.6

GE 5(o50 5 08 59.1 61.9 61 69.6 6b 8.0 69.8 70.2 71.1 ;2:6 72.: 70.5 71.9 71.8 75.1GE 9UO1 $.6 59.9 60.9 6 .1 65.7 66.1 69.9 11 72.3 79.3 75.3 7s. 16.5 76.8 77.8 18.8GE 1 01 57.6 60.0 6.9 69.3 67.6 68.3 72.9 79.8 75.9 78.o 80.9 8.5 82.1 81.8 6.b 8.9

E 200 1 50.9 60. 62.9 69.9 69.2 70.0 79.7 77.5 18.6 818 8:0 89. 87. 88.7 90.5 9b3GE 3005 53.0 60.5 62.5 69.5 69.5 70.2 79.9 78.1 19.1 82.b 89.7 89.9 88.5 89.8 99.8 99.

GE i 51 .0] 60.5 65 9.b5 69.5 70.2 79.9 78.I 19.3 82.6 89.1 : 8.9 8831 89 9. .8 0.Io0

........................ . . .. . .O.F . .o . .o. o. .. ... .. . ... . .. . .. .. .... ... ......

TOTAL NUMOER OF OBSERVATIONS: 930

m LPA t(LIMAI OLU1,9 7kI.844V bA(itNI A .l F6k9L667 0N OCLUPRINL OF L 1 I U [ 76SUS VISIbILITYUJAf iAt F OM OURL Y ObStRV I IONS

A 81,' .4I7"11, EIV'CE/M*(

SFA I1C. 4uM4ER: N 77A .AIC,N NA'4t f A1(,t0 A 6 .A P[PIOI OF 1OR0: 15-64

MONT4: tC hO UPILSIl: 6 JL0o-o0900)

Lf ILINB IIB1E8 IN SIAru iJ MILES

I, N ,i t G , Of t1 1 C1 G f E GE GI GE 6 G [ GE GE

f i I n t1 212 2 1 / . 11/4 I 1/4 5/8 1/2 1116 14

NO lL I 19.7 ... 2 22.1 S ,.4 2.4 22.4 2 2.5 22.6 e2.9 23.13 23.7 23.? 24.5 2S.1 25.6 2L.I

GE 211020) ,2.4,

2.4 25.4 2.9. z.51 25.5 29.6 25.1 b6.11 26.5 26.8 26.8 2.? 23. 29.2 2 .6

IE m'll, .2.8 20.,

29.1 ,4.8 .S- ZG.8 25.9 26.2 26.1 2. 1 21. 27.1 281 26.6 29.26 29.9

GE 161JL,1 .1.. 25.6 .6.1 2 . 26.2 26., 26.1 • 2 6.5 26.8 27.2 27.9 27.9 2S .9 2 . 3 I 1) 1 1.I CE I..OJ| 24.7 26.7 27.1 21 21 21 27.8 21.9 27.8 28.3 28.6 28.b 29.6 ILI 11.2 71.5ul hUGo) .9.5 18. 28. 26.1 28.7 21.1 28.8 28.9 29.2 2.7 30.0 30.0 1.1 1. 32.7 a3.

S100DUO 1 28.11 11 15 1. 129 11.9 12.2 72.1 12.6 11.11 17.1 31.1 14.4 15.1 36.1 It.?

GE 40G0) 29.0 I I2.1 12. 72.7 12,. 71.0 71.2 1. 7a43 5 1, , 4. 9.5 16.0 17.1 1?.

tE 8020O 31.9 9.1 19.6 15.4 16.0 16.0 36.1 16.6 6.9 3 377.1 3 1.6 18.7 79.4 90.6 41.3

6E 7001 14.8 18.0 18.4 9.,J 19.1 79.1 9.9 39.7 40.0 40.4 40.8 40.8 41.8 42.5 41.8 44.1

bt ECoI01 0 6.0 19.% 39.4 4U.4 41.9 4G.5 40.9 1.1 41.6 42.0 9.4 42.4 43.4 44.1 .9k 45.7

GE soul4) 18 41,5 42.0 92 . 42.S 42.7 41.0 41.5 4. 9 44,. 44.b 44.6 457 46.3 97.b 48.2

GE 40J0 1.8 41.1 47.4 4.4 44.4 44.9 49.8 459.4 9 1 86.1 46.9 46.9 47. 9 4 8 2 49.9 99.8GE 40401 40.1S 44.0b 49. 49.8 4S. 49. 96. 47.0 47. 87.7 48.1 k31.1 49.1 4.6 91.1 5 1.4G E 19001 41 .0 99.1 46.4 46. 46.7 46.1 47. 47.7 48.1 48.5 48.8 48.8 49.9 D.9 51.8 92.2

GE 3 000 42.0 46.7 47.9 48.1 48. 4 .2 48.7 49.2 49.6 50.1 50.4 90.8 51.5 52.2 5.4 5I.n

GE 25401 42.9 47.b 48.6 4 .1 49.2 49.2 49.8 90.3 50.6 51.2 91.s 51.9 92.6 57.2 54.5 94.1.E 2000 47.9 49.G 50.2 92.9 i 1.0 91.1 91.6 92.2 92.9 91.2 5.9 5.9 4. 3 9.1 96.6 9b.9

GE 18U01 41.9 44.1 90.1 50.9 91.1 51.2 91.7 92.1 52.6 5.1 51. 51.7 54.7 5.4 96.7 53.0

GE 190U 44.2 96.1 91.7 92.4 52.8 92.4 9.4 54.2 54.5 55.1 5.6 9.6 o.? 97.3 8 .6 56.9

GE 12) 49.9 SI-: 52.6 91. 97.8 98.4 948 5.4 95.7 56. 96.8 96.8 97.8 98.9 99.8 oO]l

bE 0uo 49.4 92.0 97.9 94.4 99.2 99.9 96.2 91 97.8 98.7 99.0 99.0 60.1 60.8 :2.0 62..

GE 900 0 46.0 5.4 55.1 S6.1 57.1 51.4 58.2 594 bU.1 61.2 61. 6.9 2 61.2 64.95 4.8GE C 001 46.7 94.7 56.6 97.7 58.8 59.1 60.1 61.1 62.0 63.2 b3.5 61.9 64.6 65 . 66.b b.9

GL ToO1 47.0 95.1 9S7.1 9.b 99.8 64 .1 61.1 62.7 6.5 64.9 69.1 65.3 66.1 67.0 68.4 65.7

GE 640) 47. 2 56.4 98.1 99.9 6I .8 6.2 615.5 69.1 66.3 68.2 66.9 68.5 69.6 71.2 71.6 7t".a

GE 9110) 47.6 97.1 59.6 61.1 61.7 64.4 698 6.8 69.0 71, 11. 71.9 71.0 :4.1 IS.9 75.9

"E '41 48.1 I 8,0 60.6 62.7 65.9 65.8 67.7 70.2 71.9 77.9 79.9 74.9 771 78.0 198 8 0.2GE 7001 1 8. 98.9 61.1 61.4 67.1 61.7 70.9 13.4 74 78.0 80.1 80. 6 81.4 89.1 87.8 8.0

GE 2001 48.1 98.8 61.9 69.1 68.4 66.8 72.7 79.9 77.9 81.9 84.6 89.4 88.7 91. 49.6 91.?

GE 1U01 48.1 98.8 61.9 64.1 68.9 68.9 71.0 16.3 78. 0 82.6 4,.4 86.1 89.5 91.8 96.9 9.4

If D1 48.1 98.8 61.9 64.1 68.5 68.9 71.0 763 78.0 82,6 8,4 86.1 89.9 91.1 96.9 12.a

OIfL NUMB OF OBSERVATIONS: 91o

,. a

FuL OdAL CLIMAiOLOGb BRANCH [ifi A l F[AUiC¥ Of OLCUR N_ OF CfL IN, Vi RSUS V blI If t IUSAFLTIA C F (OM HOURLY 0OBS tRV A TIoN S

AIR sEATHER SELLICE/MAC

TATIION NUMLERP 127855 .IATION NAIL: FAIHIL AfLi WA P 0RIOD OF RECORD: 75-b4MONTH: OLEC HO89LS1: J940-lijo

CIi IIN. VISi..LII.y IN SATllE MiLESIF. I . GF GE GE GE GE GL GE G GE GE G1 GL GE GE .t

f f I t0 6 1 2 1/2 2 1 1/2 1 1/4 1 1/4 5/8 1/2 /19 1/4

NO Lit I 22.1 21.I 29.1 4.4 2 1.8 25.1 25.4 25.1 2.8 20.9 lb.6 2b.8 29.9 29.9 27.4 2a.I

* I 2OUO 29.9 27.1 21.5 18.J 28.5 2.. 29.0 29.4 9. 0.1 3O*. 10.9 3a9.8 L. 3 4 32.0 1.7.[ 380002 2.9 21.6 28.3 29.9 29.1 29.4 29.1 10.0 30.1 10.8 30.9 31.1 11.. 31.9 32.1 13.1Ci IbOLIOI 25.1 28. 28.7 2v.2 29.8 7O.0 10.1 10.6 10.8 11.4 11.5 11.1 12.3 12.2 11.1 94.3GE 14(101l 27.6 29.9 10.1 10.6 11.2 3.4 13.7 12.0 12.2 12.8 12.9 11.1 11.4 13.9 41 3 5...GE 1240001 10.9 12.2 12.9 1.9 1 11" .2 14.9 1.8 34.9 39.6, 39.1 19.9 36.2 3t.1 31.9 1.2

GE 10001 37.1 7.8 39.6 16.2 36.9 11.3 11.4 1.1 1.8 18.9 18.6 58.8 19.3 19.2 40.4 9.1

E 9o00 0 114 19.5 16.2 16.8 17.6 11.8 18.9 18.7 18.8 19 19.6 09.8 90.1 40.2 41.4 s1..

GE 8000 19.1 17.5 8.. 19.] 19.9 40.1 40.b 1.0 411. 41.7 41.8 92.0 42.4 42.9 41.1 4v.1

GE 10002 17.8 40.. 41.1 491. 42.9 41.0 43.5 41.9 440 49.9 49.7 49.9 49.1 49.4 46.6 41.26f 60001 18.2 40.8 93.6 2.9 4.1 93.5 49,1 44.4 49. 45. 99.1 99.9 "9.8 99.9 61.. 47.7

Co 90002 93.2 91.9 44.1 4.b 96.6 46 8 4.1 6 . 7 9.7 48.9 48.9 4.17 49.0 99.3 S0.1 51.jGE 4590 93.7 44.7 99.6 99.9 91.6 47.8 98.4 48.7 98.8 49.5 49.6 49.8 50.1 50.2 51.9 92.0

1E 40 97.3 96.2 47. 2 48.2 99.9 99.3 90.2 90.9 90.6 3.1 51.4 51.7 52.2 92.3 53.4 4.1ME 19901 4.2 41.8 9.9 90.3 91.4 5.6 52.2 52.9 52. 531.2 3.1 51.7 54.1 54. 5.5 S.I

UE SCUD0 44 .9 98.8 99.9 1i, 1 .6 52 ,891.1 . 91.8 94.9 594.1 5.1 995 .9 9.1 56.9 97S.9

kA. 25001 96 .0 90.6 91.8 96 96.1 97.6 97.3 98.3 98.9 9./ 99.9 93.9GE zOIO 47.0 91.s 93.2 9 ... 97.3 97.4 98.3 98.9 99.6 99.6 99.1 60.0 63.b 99 60. .1 92.5

.4 18002 41.1 92 .2 99.3 51 .8 58.6 59.1 99.2 60.2 60.3 60.9 61.1 1.11 62.9 1.SE Io 47.6 52.9 91.9 .556 98.2 98.9 99.9 60.0 60.3 63.1 61.2 61.5 6.9 62.2 6.1 b4.3

GE 32002 97.8 1.2 54.1 9.8 99.9 59.1 b.9 61. 61.9 62.6 62.7 61.0 63.4 b.7 l4.9 b.6

uE lou0 48.0 5.7 55.1 57.8 60.9 61.1 62.7 61.2 1.1 b4 5 6 E49 b 68 691 9,5.9 69.8 93.9GE 9011 98.9 94.9 5.5 58.7 62.0 62.9 64.0 69.9 64.6 69.1 .b58 66.3 69.6 66.8 b8.1 I 8o

GE 8a01 48.5 59.9 97.0 99.4 62.9 b.1 64.8 9 b5.6 68 67 .0J 67 2 67.5 b8.1 68.1 64. 1(Y .GE 701 9.9 955.9 97.8 60. 69.6 65.2 66.4 67.6 b1.8 69.0 69.2 69.6 70.1 11.1 71.6 1 .UE 600l 48.9 sbo. 588 61.5 66.2 66.9 68.6 69.9 69.7 13.2 73.8 72.2 2. 72.9 /9.2 7.6

l 9002I 99.0 96.8 99.6 62.8 68.7 69.9 73.2 72.2 12.9 79.0 79.1 79.9 6.9 1 1.9 19.96f 41JI 99,2 97.1 60.1 69.9 70.9 11.6 1.1 19.6 74.9 11 78.5 79.4 83.2 8.9 8..9 33..8

E 1001 949.2 9.9 b.8 69.9 72.2 73.7 76.5 78.2 18.7 8ion 84.6 89.9 88.4 8.8 1.9 4.3UE 2o 49.9 5.5 6u.9 9.95 12.4 73.9 76.8 78.6 79.4 81.0 86 .2 812 91 .0 91.8 99.9 96.G f 1O 49.4 91.9 60.9 69.S 12.5 74.0 ,.9 78.7 79.5 81.1 86.1 81.13 91 .1 91 4 62 1 30 .5 3 s

GE 02 9.4 75 .. 609 65. .72. 74.0 16.9 78.7 79.9 831. 86.1 81.1 93.7 92.1 99.2 100.0

3O7AL NUMER OF OSERVATI NS: 930

6 t -AL CLIMAICLO6Y ANLH

V.... t i~ ICSKY COVERA ' [Ar St f 5kVlCL/rAC

i27p, FA! (HILL AFB vA 75-F4 JUL

u-02 43. ' o . . . . .1 1 4-t 3.4 bb67T

-_U 23. 7".2 21.2 14.' 4.6 8951

- ,.9 2".6 13. F 4.' 9251

,0 -11 - .. 2 5. 1S.t 5.L" 928

1.- , Iu.4 4h..' o I 14.t 5.4 929i

I -1 .4 4 2(-.1 15.4 ,.3 9

,3u

4- . ____ ____ 20.3 15.4 4 .H 902

1-2 5 33.1 3/.' 1.9 13.9 3.9 87

4 - - - -.---- --------- _ _--- 1__ - - ---

-,1 14.,- 4 .7 7249

Y ;AFF TA C 0 95 (OL A; EDT1 0o 1 1.11 1

:,L AL CLIMAICLOG" ,ANL SKY COVERA tLTACSK

COEA I,. ,EAT:ENH SERVICt MAC

i2? l.5 FALHILU AF8 dA 15-4"4 JUN

U-02 2 .S 3c.S . .3 . 4.7 43

GlU-OS .7 .4 l .4 2(.6 23.3 b..) bb7

.3 31.3 24.f 6.4 89,

-1 3 4. 3, .4 25.6 6.8 90

.1.-1P 1.S . 37.4 26.2 7... 90G

1 -1' 1 2 3'.0 .7 . 26.3 1.1 897

S- I . 31.6 __ __35.H -Z2.9 6.6 864.

1-2 2r.§~__ 2~? 2. 5 .2? 83,0F ------ . . . ...---. -_ _ __ _ _-. . . . . . .. . . . .--. . s. .d - . ., s ,

' • i , . t ,f'. 4 2 ,4 ," .2 7L; 0 !

5~ 01 A: F

ulIAL CLIMAIOLOGY RkANCH

',LTAC SKY COVERA I .rFATEk SERVICL/MAC

121P-5 FAII CHILo AF6 .A 76-AS 5AY

RO '0,PLY OBELiATIONS

--lu 24 .2 33.6 1'.4 26., 5.1 914

23- 0 5 1..0 19.9 31.3 6.1 919

.6 2,8. .L 32.9 6.H 929'

-11 4. 25.7 3h.l 35.4 7.4 93U

1 -1 3. 1 2 .6 Q.3 34.1 7.8 979

1 -1 2 S ,-4 37.8 33.3 1.7 928

1-2 .-. 33.2 30.1 7.0 918'

1-23 16.6 311.2 21.1 1 26.5 5. 1 91a

• __ _ _ _ _

II.'' 9 R! .I 7 i Q .1 31.°3 b°.7 737r'

USAFETAC i-4 0 5 (OL AL ,EVOIS EDIONS OF THIS FORM ARE )SOLFT

(AL "AL CLIMAJOLOG" bANCS,t fIAC SKY COVERA , EAT1.EU SEkVICL /MAL

1278_5 FA C HL) -AFB wA 16- 5 P

PERCENTAGE FPFQJENCY OF OCCL- 'ONCEPROM HOJRLY OB3ERP, ,NS

UO-U2 2 7 -,_1.5 14o7 ,9.1 1 699

03-05 1 .2 _ 31.7 19.2 29.9 5.7 890.

-- J- 7 . iL.3 23.7 38.5 6.9 89L,

-11 4. 27.3 30.6 37.6 7.3 9flL

2 -1' i. _ I',o? 3P.7 41.4 -b .1 913o

1 .- ' 1.9 P'_ .7 __37.8 4t..7 8.1 901

_-2 . 3 3 . 1 . f.1 33. . 7.0 _ 9V C

11,23 1 . 4 1 35.9 . ... . ... 17.2 30.4 5.6 9OC4I

I__ .--.-----. _ _ -

1.0a i__ 215 . . .26.5 35. 6.7 717

U SA F F T 'C 0 9 5 (0 A) . ,SDITO- 0 T-l l Fr 0 IOLTF

ul ,AL CLIMATOLOGY -IJRANCH, - 'E TAC SKY COVERA ', [ATiEk SkVIE/MAC

127P',5 FA; CHILD AFB .A 5b- MAR

S , C , C ,';'rNCE

M 7 -2 23. 2. 17.2 35.- 5.a 924Vi

, -}3- u 1 .4 2 ,.2 16.b 4 .A b. 925

,, 4 U l .1 27.C 24.5 4'4.3 7.5 9 2'J

-11 4 2 .C 2P.8 43.5 7.6 930

1 - I 2.2 22.4 33.! 41.7 7. 93JJ

i -2. ..3 _ 29 .4 _. ...- . 2'0.0 35.3 7.1 93tA

1-23 1,.3 i __ J.8 19.5 34.4 6. 1 9301

TOTALSIT.

0 , I24. 2 .6 39.6 7.t 741 9

USAFE 'AC 0 -9-5 (OL A) ,P,OUS EDITIONS OF THIS FOR. ARE OBSOLETE

G I,,AL CL IMA ICLOU, l ANCH SKYCO ELTACCO EAlI F AT Ii SE kVI C fmA C

4 78',5 1 A LttiLL~ AFb jA 5FEB

PEPCENTAGE FREOAENC 0; OCCLUENCEFROM HOURLY OBSLRVATIONS

.- J -U 2.3 ___ ~7 -56.5 7.5 84 1

11-05 s.1 14.1 13.8 62.b 7.9 83

.2j 11.7 19.1 65.lj 8.6 843

-l 3. __ __ 11.5 124.2 61.3 .8.6 847

I -1, 3. 1 .7 ________ _ 26.7 58.8 8.6 849

4.1- _ 1. 27.8- 53.1 i b.3 849

-2 -:.5 19121.5- 52.9 78 8

.1 -23 .9 _ 1Y . 6 17I.5 53.1 -1.5. 84

_____'______2____1_ 291.5 I53.1 8.1 67

USA9

TA C ,. 0 9 5 (01 A) PI'IVICIS ROT,06,S OF 7THIS FOTTM ARF O6SOIETF

GL ' AL CLIMATOLOGY -AN',CH-u' CjtIt T-AFCUSKY COVERA I EATti[ k SI kVI(.I /MAC

127PS5 F AI LHILD) AFb wA 76-85 JAN

PERCENTAGE FpEQUENCI 01 CCURRENCF

FROM HOURLY ORSERATiONS

j-1, 4- . I8 t,4 1,.5 7.8 905

0 7-0' I A 19.1 69.1 8.1 91'-

S- 14. 7 12.2 67.b 8.3 919 I

-11 3. 1 .5 1%6 b8.1 8.6 9151

- 3. A,. 19.1 -,5.2 8.6 9281... .. ... .. ...-- - - -----.----- - - - - - . . . . .

1-11 4. 1 - _ .3 -rp b.8 8.4 9261

1 -2 A-. :1 14 . 15.Q 61.3 8. 926

1-23 1 .7 _' 1. 11.4 _63.14 7 .8 901,

[- __ __ _ _ _ _ _ __ _ _ _ _ _ --- - . J

- I I I 1 1

,II .4 _' 14.3 16 .1 8.2 7328

USAFETAC , 0-9-5 (OL A) PREVIOUS EDITIONS OF THIS FORM ARE OBSOLETE

t F;

I~ 7C; I.

GLUHAL CLIMATOLOGY akANCH PE4CENIAGE FREOUENCY OF OCCURRENCE OF CEILING VFROUS VISIBILITYUSAfETAC FROM HOURLY OdSERAIONS

AIR WEATHER ,ERYCE/MAC

S AIION NUMERL: 12185S SfAION NAIE: FAIRCHILD AFB wA PLRIOD OF RECORD: 5-85MONTH: ALL HOURSILSTI): ALL

CE IL 140 RIO|B|LITY IN S|IUIE MILES

IN I GE GE GE GE GE GE GE GE GE GE G GE GL GE G1 ILFEET I TT 6 5 4 2 1/2 2 11/2 l /N & 4 6/8 4I/51 11 5 / 4........ •......... .... ......... ............. ................... ,... ... .................. ..................................

NO CEIL 4 47.7 48.6 48.6 49.a 49.1 49.2 49.3 49.3 49.4 49.5 49.6 49.b 49.? 49.8 50.0 5u.2

GE 2OO00 67.7 54 7 54.9 55.1 55.3 55.3 55.4 6.6 6.5 5 5 55b 5. 56.0 66.0 ab.0 5.4GE 18000 04.1 55.2 50.4 SS.S 65.8 55.8 SS.9 56. 0 56.0 56.1 56.56.3 564 Sb. 56.1 7 0.9

G 160001 5.3 55.4 5S.6 55.7 56.0 56.0 56.1 56.2 S6.2 56.1 56.5 56.5 56bb .1 56.9 51.1GE 140001 55.4 56.5 S6.? 56.9 51.1 51.1 51.3 51.3 57.4 51.5 57.6 51.6 57.8 61.9 b.1 5I.3GE 1OO01 58.4 59.6 59.8 60.3 bO.3 60.3 60.4 60.S 60.5 60.7 60.8 60.8 61.0 61.0 61.3 61.5

GL 1U00j 62.1 63.5 63.7 63.1 64.2 64.z 64.4 64.5 64.5 64.6 64.8 64.8 6.0 65.0 05.1 b5.0(E 90001 63.6 65.0 65.2 60.5 65.7 65.8 66.9 66.0 66.1 66.2 66. 66.3 66.0 66. 6b.8 blGE 80001 66. 6 68.2 68.0 68.8 68.8 68.9 69.1 69.1 69.2 b9.4 69.4 69.6 69.6 69.9 1.1GE 70001 69.0 70.7 70.9 71.2 11.0 761. .7 11.8 1.8 12.0 72. 72.2 12.3 72.4 1.7 12.9GE 60O01 70.4 12.1 72.: 12. 72.9 73.0 13.1 71.3 73.3 73.6 73.6 73.6 13.8 71.4 14.1 1.$

GE 50001 12.7 74.6 74.9 1.1 10.0 75.6 7.7 7508 759 76.0 76.2 76.0 6.4 705 16.1 10.9bE 45001 73.1 76.1 16.0 76.3 16.6 76.7 16.8 77.0 77.0 77.2 77.3 77.3 77.5 71.6 77.8 7.JGE 40DU0 15., 71.5 77.8 78.1 18.5 78.6 78.7 78.9 78.9 79.1 19.2 79.0 19.4 79.5 19.8 4Z.0GE I-uDI 7b.4 78.8 79.1 19.0 19.9 79.9 80.1 80.3 80.3 80.5 80.6 80.6 80.8 80.9 81.2 hI.4GE 30001 77.1 80.3 80.7 81.1 B1.0 81.6 81.8 82.0 82.0 82.2 82.3 82.4 82.6 82.6 82.9 83.1

GE 25001 78.6 81.3 81.8 82.2 82.1 82.8 83.0 83.2 83.2 83.4 81.6 81.6 83.8 81.9 84.1 44.3GE 20001 19.1 82.2 82.7 81.1 81.7 83.8 84.1 84.2 84.3 84.5 84.6 84.7 84.9 84.9 8S.? 85..bE 180019.3 82.4 83.0 80.4 84.0 84.1 84.1 84.6 84.6 84.8 84.9 84.4 851 85.2 80.6 85.7CE 1001 79.8 83.2 81.8 84.2 84.9 85.0 85.2 85.4 86.5 85.7 85.9 85.9 86.1 8b.2 86.4 A.1GE 12001 80.3 84.0 84.6 85.1 85.9 86.0 86.3 86.5 86.6 86.8 87.0 87.0 87.2 87.3 87.5 87.8

GE 10001 80.1 84.7 85.4 86.J 86.8 86.9 87.1 81.5 87.6 87.9 88.1 88.1 88.1 88.4 88.6 88.8GE 9001 80°9 80.1 80.9 86.5 81.1 87.5 87.8 88.1 88.2 88. 88.7 88.7 88.9 89.3 89.3 89.5GE 8001 81. 86.1 86.5 81.1 88.0 88.2 88.0 88.8 88.9 89.1 89.6 89. 89. 84.8 9 .3 93.3GE 1001 81,4 86.0 86.9 81.6 88.6 88.7 89.1 89.4 89.5 89.9 90.1 90.2 90.4 90.5 97.7 91.0LE 600 81.6 86.5 87.4 88.2 89.3 89.4 89.9 90.1 90.4 90.8 91.1 91.2 91.4 91.5 91.8 92.0

GE 9001 81.8 86.9 88.0 88.8 90.1 90.3 90.9 9143 91.5 92.0 92.4 92.4 92.7 92.8 41.1 93.4bE 4001 81.9 87 88. 84 . 90.9 91.1 9a.8 92.3 92.5 93.2 93.1 93.8 94.1 4.1 944.6 94.9GE 3001 b2.0 87.6 88.7 89.8 91.0 91.8 92.6 93.3 93.6 94.6 95.3 96.5 96.0 90.3 96.9 97.3GE 2001 82.0 97.6 8.88 89.9 91.7 91.9 92.8 93.7 94.0 9s.2 96.1 9b.3 97.1 97.6 98.6 99.3GE 001 82.0 81.6 88.8 89.9 91.7 92.0 92.9 93.7 94.0 95.3 96.2 96.4 97.2 971.7 98.8 13.3

GE 01 87.0 81.6 88.8 89.9 91.7 92.0 92.9 93.7 94.0 95.3 96.2 96.4 9?.2 97.7 98.8 103.3...*........ ....... °...... .... .. ...... ,..... ...... . ... . ..... ... ... , ... ....... .....,. °... ... .... .. ..... ......


S

GLOdAl CLIMAJOLOGY 8ANCH '[RCENTAuE FR8EUINCY OF OCLURRENGL OF CL|LING VFWSS VISIbILIIYUSAFETAC FROM HOURLY 0SRVA3IONt83AI EAIIP SE88ICE/MAC

S31ION NUMeEB: 121855 5tATON NAf: FAIRCHILO AFA WA PERIOU OF RECORD: 715-84MONH: 0EC HOURSILSII: ALL

... .. .o ... ... .... ... ... ... .. ... ... .. .. .. . .... ... ... .. ... ... ,. .,. , .............................. .....

CCXL|NE, 81S181L10 19 SIAIu|E AILES

I|N 1 G GE GE uF Gt GE E11 G GE Gt GE GE GL GE GL G|XlI I 13 6 5 3 3 / a 2 /ll l 111 1 3/9 S/A 102 5/36 1/4 0

NO CEIL I 5.3 16.8 21.1 27.4 1.17 21.8 28.0 28.2 28.3 28.1 29.0 29.2 29.b 29.8 30.5 31.0

GE 200001 2. 2 30 3. 0 31.2 . 31.3 5 1.8 1.9 52.1 1.6 32.8 333 33.5 4.3 .9E i8000 28.9 50.4 30.1 1. 1 1.5 1.6 33.9 32.1 32.2 32.0 32.9 33.0 33.5 33.7 34.0 35.1

GE 160001 28. 6 30 .9 $1.3 31.1 31.8 32.1 32. .8 32.8 31 33.2 33.8 33.9 3.8 35.3GE 140001 29.5 31.6 33.0 32.1 32.8 32.8 33.1 33.3 33.0 5 .8 .8 39.0 IS .6 3..9

GE 120001 31.7 33.. 34.2 39.5 30.0 55.1 35.9 35.6 30.7 36.1 36.0 36.b 31.1 1.3 38.1 19.I

ut 100001 34.1 36.3 36.1 31.1 31. 31.8 8.1 3 8. . 38. 19.2 39.3 39.8 4 0. 40.9 41.,GE 90001 34.9 37.2 11.6 38.3 18.6 38.1 $9.1 39.9 39.0 39.8 90.2 40.3 40.9 41.1 41.4 42.5

GE (30001 31 .8 90a. 3 90. 9.2 9 1 41.8 9 1. 9 92.5 92.6 42.7 9 3.0 931. 4 43I.01 44.1 44.3 40. 2 40.7GE 10001 40.8 43.5 43.9 4.9 45.1 45.2 45.6 4.9 96.0 96. 1 4 6. 96.8 9.4 91.6 .S 49.JGE 60001 4 .0 94.8 90.3 45.e 96.5 .b 6 47.0 91. 91.9 41.1 4.1 48. 2 48.8 49.0 49. 9 5J.

GE 00001 9.2 91.3 41.8 98.3 99.1 9.2 99.6 49.9 50.1 50.4 508 50.9 01.9 51.1 52.6 5.3GE 900 *5.2 98.0 99.1 99.1 00.5 06 51.0 01.3 51.9 51.8 2.2 5z.3 5.9 03.1 54.0 54,5GE 000 46.2 99.9 00.0 $1.1 02.0 52.1 52. 5 .8 02.9 5.3 50.7 5.b 584 54.6 50.0 56.1I.E 35001 97.0 00.9 01.6 52.2 03.2 03.3 53.8 09.1 59.2 04.6 00.0 00.1 00.1 99.9 06.8 01.4GE OUO1 *7.9 52.0 52.1 3.0 54.7 5.8 00.2 55.6 5.1 06.2 06.6 56.1 57. 3 51. 5 8.4 0.1

Lt 29001 49.2 53.1 0*.? 55.b 57.0 51.1 1.1 08.2 58.3 8.8 59.2 59.3 59.9 60.1 6 3. b.6GE 20001 00.1 54.9 5.9 51.3 08.0 08.1 59.9 59.9 60.0 60.5 60.9 61. 61.7 61.9 62.8 63.9GE 18001 50.9 55.2 56.3 51 58.9 59.0 59.1 60.2 60.9 60.9 61.3 63.4 62.1 62.3 b .2 63.1GE 10 s0.9 56.1 57.2 58.3 60.0 60.2 61.0 61.0 61.1 b.2 62.7 62.8 63.9 63.6 64.0 .1GL 12001 03.8 07.0 08.1 09.9 61.7 61.9 62.8 6.0 63.7 69.3 69.7 64.9 6. 69.1 66.6 6.

ut 10001 52.0 81 60.0 61. 63.5 63.8 64 : 8 60.6 60 66.6 61.1 67.2 61.8 68.1 69.3 69.6GE 9003 53.0 09.7 61.1 62.5 69.1 60.0 66.1 66.9 67.2 68.0 68.0 68.6 69.3 69.5 10.4 11.3Gt 8001 53. 60.8 62.2 61.1 66.1 66.4 67.6 68.9 68.7 69.6 10.2 70.3 11.0 11.2 I 2.1 12.76E 7001 01.8 61.41. 68.1 69.7 10.0 11.0 71.6 73.1 12.9 72.6 13.6 14.2GE 6001 09.3 62.1 63.8 69.7 . 68.9 70. 71. 3 11.7 73.3 74.0 79.2 74.9 10.1 76.0 76.1

GE 5001 59. 63.1 60.2 67.3 70.5 71.0 12.8 71,. 79.6 16. 11. 1. 718. 78.1 197 82 .LGE 9003 5.9 69.9 66.5 68.9 72.4 73.0 75.1 76.1 11.3 79.9 80.7 81.1 82.3 82.1 83.8 84.9GE UO1 55.0 65.0 67.2 69.1 19.0 1.7 71.9 79.0 80.4 83.3 85.7 86.1 88.0 88.8 90.7 91.8

GE 2001 5.0 65.1 67.9 70.3 1.6 10.1 18.3 80.1 81.3 80.3 88.2 88.1 91.3 92.0 90.71 97.GE 1001 90.1 60.1 67.4 70.3 14.7 75. 18.4 80.9 81.9 80.6 88.6 89.1 91.9 93.3 96.8 99.9

GE 05 95.3 65.1 b1.9 70j. 14.1 15.9 18.. 80.9 81.9 80.6 88.6 89.1 91.9 93.1 96.8 1O0.9.... .. ........... ..... ... . ... .. . .. .. .. ... .. .. ... .. . .. . . . ............ . . . ........ . .. °. ... ....

TOTAL NUMBER OF OB5ERVATIONS: 740

I

ULOdAL CLIMAIOLOG3 UINCl PEENIASf FHEIULNCY Of 1CCURENCL OF C[ILINU Vfk.US VISIBILITYUSAFETAC FIOM HOURLY O0SRVATI0NSAl dAIHER %FRVICE/MAC

STATION NUMBER: T78bS SAION NAIL: FAIRCHILD AFB WA PEROD OF HECORO: 75-84MONTH: DEC HOURSILSI: 2103-2303

13Ii[Na V15181L0TY 1i STAIUTE MILESIN I GE SE GE bE GL GE GL SE GL GE GE SI G GE SI GE

Fit I : "o 6 5 0 3 2 1/2 2 11/2 1/4 1 3/4 S/a I /l2 S 1/ 3............. .. ,... ..... o...... . *.....•........ ..........*.......................................... ..........................

NO CC I3 30.0 31.05 1.8 11.9 32.1 12.4 12.8 33.0 3.3 3.1 3 3.7 3S.1 15.8 35.9 36.1 36.1

6E 20OuOj 3?.3 33.a 34.1 34.2 34.1 3o.4 35.5 35.0 5.6 lb: I I .b a 1 3 8.4 3 1 8.1 B.IGc 18001 12.5 34.0 3a.3 34:. . 34.9 15.1 30.5 10.1 30.8 36.1 1.0 31.8 346. 3n.l a.9 9.3

LE 16000 3 2. 5 34 4.3 34.% 314.9 35.1 35.5 35.1 30.8 36.3 37.5 31.8 3a.o 38.3 39.9 &.,1uE |0OD 31.3 38.8 35.2 35.4 35.9 36.0 36.0 35.1 36.8 31.3 18.5 38.8 39.6 39.1 39.9 02.LSE 120001 34.9 36.S 3.8 31.3 31.5 1.6 38.1 38.3 18., 38.9 43. 1 41.4 41.2 41 .1 1.5 1.7

St 10000 314 19.1 39.. 39.6 40. 1.2 40.6 43.0 41a. 41.5 42.1 4. 3.8 43.9 4.2 00.0LE 90001 38.8 40.4 40.8 41.3 43.5 43.b '2.0 42.3 42.4 42.9 q4.3 44.4 45.2 40.3 45.5 '4.S( 80001 41.9 44.0 44.3 44.5 45.1 45.2 45.6 45.8 45.9 46.5 47.6 48.0 48.7 408. a .9.1 4(.4E 1000 4 4.4 46.6 46.9 41.3 17.6 41.1 48.2 48.4 48.5 49.0 50.2 00.5 01.3 SL.4 1.8 02.3

SE b00 406.8 48.9 49.2 48.5 50.1 50.2 50.6 00.9 51.0 01.0 52.1 530 53.8 51.0 Oo.3 04.5

o[ 0001 41.6 00.1 50.9 51.3 5.. 51.8 02.3 02.5 2.6 03.1 54.3 54.b 55.4 00.0 00.9 06.3:. ?SI 48.7 01.4 52.3 52.6 5.1 03.4 53.9 54 . S'.2 5.7 55.9 Sb.2 S.0 5?.1 93.0 53.3

E, 4OU0 '49.0 02. 5 53.4 03. 54.6 5.7 55.2 55.4 00.0 56.0 57.2 57.5 s.3 08.4 59.8 S.1SE D 5010 03.1 04. 55 55 .9 56.1 56.2 56.8 S8.3 58.3 59.0 09.1 59.6 09.9".E 301 03.2 04.4 50.4 5.9 51.1 51.2 57.6 58.0 58.2 58.8 60. 60.3 61.2 61.3 t,1.7 2.0

SIE zSU9 02.8 0bb 08.3 58.6 60. 60.5 813 61.6 61.8 62.5 63.7 64.0 64.4 6,.9 b0. 60.7SE 2000 53.1 5.9 58. 59.3 60.5 63.0 61.7 62.2 62.4 63.3 64.3 64.6 60.0 6.36 66.3 66.3SE 18001 51.0 01.' 08.9 09.b 63.3 63.0 62.3 62.7 62.9 63.7 64.8 65.2 66.0 66.1 66.6 61.3

G 10 01 94.2 So.2 09.7 60.3 1o 61 .4 3.1 61.1 63 646.1 61.3 67.2 63.8 68.1S( 12U09 S.1 59.2 60.8 63.0 63.3 63,8 64.5 65.2 65.4 66.3 67.S 67.8 68.9 6y.0 b9.S 6Y.9

GE 1OO3 50.S. 60.4 61.9 62.s 64.6 651 66.0 66.7 66.9 68.0 69.3 b9.0 73.0 1:6 11.1 11.0GE 9U0 00.8 61.4 63.0 63.9 60.1 66.2 67.2 67.8 68. 69.1 0.1 71.8 11.8 11.9 12.1 13.1SE 810o 06.1 62. O 43 64 a 6.8 67.1 68.3 68.9 64.3 10.4 ;1.. 72.u 13.3 71.2 14.3 .SE 71 56.6 63.4 60.1 65. 4 67.8 68.4 69.0 7..2 10.4 12.2 1S. 73.8 74.9 ?5.1 10.8 76.2SE 610 57.0 64.2 66.0 66.9 69.1 69.8 11.1 71.9 12.4 74.3 70.8 36.2 1.4 17.0 78.3 18.1

E 500 57.1 65.7 61.7 68.7 713.8 72.0 73.9 74.1 10.3 7.2 18.1 79.1 83.3 80.0 81.6 82.3S( 4059 08.2 blZ 69.2 70.3 71.5 14.2 76.2 11.5 78. 80.4 82.3 82.8 84.3 99.8 80.9 8a.0GE 3uOI 58.4 68.1 10.1 71.2 71.9 75.b 78.6 83. 1b.9 94.6 87.1 88.3 93.1 91.0 92.6 93.1SC 21109 08.0 68.2 10).2 11.3 70.3 10.9 78.9 81.2 82.5 80.9 89.5 9. 92.0 93.7 06.2 81.2

SE Ifl 58.0 68.2 10.2 71.3 10.1 10.9 18.9 83.1 82.6 86.1 89.7 90.2 92.8 94.2 97.3 v.9

(E Ol 08.0 68.2 70.2 71.3 70.1 75.9 18.9 81.3 82.6 86.1 89.1 93.2 92.9 9.2 07.3 303.U• . *. . * , . . o o * .o.......... ,°.......*o...... o........... .......... ,....*....... . ........ . . . . . . . . . . .


I

H-/ i l I I aIIfl l/

ULObAL (LIMAIOLOGY FRANCH 1CItANA fktUENCYO OF GCCURRLNLL Of CILING VfRSUS VISlbILIfVU SA LI AC FWOM HOURLY ObSRVAT10N SAIR .AIHER SERVICL/M8C

SIAT10N NUMBER: 721855 STATION NAIL: FAIRCHILD AF8 WA PERIOD OF LCORD: 15-8

MONTH: 0LC H3 0U4SLSI): IR]-iJ21L

CEILINS RISIBILIT IN SIATU E MILLS

1 I L GE GL GE G GE GE GE L E G L GE GL E SI E IFLEI I 10 6 5 4 3 21/2 2 1 112 l/ I 1/ 5/6 112 I I/A 0

.... ............ .... , ..................... ,....... .. , ......... o..................................................•..... .. .....

NO CLL I 28.1 29.9 30.2 30.21 30.5 TO. 5 10.6 30.8 30.8 31.U 31.6 31.8 12.0 32.0 32.4 32..

E 20001 31.5 03.4 33.t b 3.9 34. 11 .4 34.5 3947 4. 1 3 4. 18.9 35.6 15. 36 .1 36.1 36.5 b:GE 18000 31.5 33.4 33.8 33.9 34 44 3 15 04 38 1.9 35.6 35.8 16.1 16.1 36.5 36.5GEC. 1bOu0I 31.6 3.5 3T .9 34.1- 34.5 34.5 34.6 34.8 34.8 15.1 35.1 35.9 3G., T6.2 06.6 16.b

GE 190001 3.8z 14.31 14 ., 3 4.1 35.3 35.3 35.8 35. 35.6 b S.A 36.5 3.1 17.3 31.0 317.3 31.3bG 120001 09.9 36.3 36.1 36.8 31. 3 7.3 37.4 37.6 31.6 TI.A 38.5 TA.? 39.0 39.0 19.4 4 .,

UL 100001 36.1 18.1 19.0 1.1 39.1 34.7 39.8 0.0 40.0 40 .2 80.9 81.1 41.4 41.4 4 .7 . .CE 90001 31.4 39.7 40.0 80.1 3.b 40.6 80.8 41.0 41.0 41.2 81.8 2.20 42.4 42.4 42.7 4e.?GE 8000 4 10 .3.3 43.7 43.4 44. 3 44.3 48.4 44.1 44.1 48.9 85.1 85.9 44.2 86.2 .. 446.6.t 7 1 40 91.9 46.1 46.8 4b.9 41.5 87.5 47.6 88.0 480 8.2 48.9 49.1 49.S 44.5 .9.8 49.8GE 600601 45.9 48.5 48.9 49.3 9.7 49.1 49.9 50.2 50.2 S.8 51.2 5I.8 51.1 1.1 5.0 2.0

uE 50001 41.6 50.5 51.1 51.0 51.8 51.8 52.0 52.4 52.8 '1 5 551.9 '<.9 5.2 54.2GE 45001 48.5 51.9 52.6 52.7 53.4 53.9 SI.? 58.0 54.0 58.2 54.9 55.2 5s.5 55.5 7S.8 55.9

E 40001 49.5 53.1 53.9 54.1 54 4 54.9 SS. 3 55.3 5.S 6.2 56. 56.8 5b.8 51.1 511

LE SUO1 50.6 54.b 55.5 55. Sb55 bt.5 56.7 51.1 57.2 51.5 58.3 5a.5 58.8 54b.8 59.1 SY.1GE 30001 5 .3 56.7 57.b 7. 58.b 58.6 58.8 59.2 5 9.4 519. 6.4 60.6 1.0 b1. L.1 61.4

GE 25001 51.8 58.3 59.6 59.9 61.0 61.0 b1.9 b2.0 6z.2 62.5 b3:2 63.4 63.8 63. 64.1 64.2(,t 2000 54.7 S9.4 61.2 61.5 62.8 62.9 63.3 64.0 b.1 64.4 65.2 65.4 65.? 6S. 660 66b.1

GE 18001 55.5 60.b 61.9 62.1 63.5 63.? 8.1 64. . b4.8 65.2 b.9 66.1 bb.5 6b.5 bb.8 b.9GE ISOO 55.8 614 6 2.7 63.J 68. b4.6 b5.2 65.8 b5.9 66.5 612 67.4 67.1 6 1.? .I b .GE 1201 56.7 62.9 64.2 64.6 66.1 66.3 66.9 61b8 6be.1 68b 69.4 b9.6 699 69.4 70.2 10.3

'A 10001 58.2 65.3 66.6 61. P8:9 6 6.1 69.8 71.0 11.2 72.2 12.8 13.0 13.3 13.3 3.1 73.6bE 9001 58.6 65.9 61.2 61.4 69.6 69.9 10.5 11.8 12.0 12.9 1.7 11.9 78.2 74.2 12.1 14.6LE 8BO 59.2 61.1 68.4 69.1 10.8 71. 1 1.8 73.2 13.4 74.3 15.2 75.4 75.1 75.1 16.0 1b|GE ToOl 59.5 61.1 69.0 69.1 11.4 11. 172.6 19.0 74.2 75.3 16.1 7t.3 76.1 16.7 11.0 11.1GE 6001 S9.M 68.6 69.9 7.5 12.3 72.6 13.5 18.9 15.2 76.7 17.6 11.8 18.3 1A.1 18.6 78.8

GE St, 63.95 69.4 11.3 12.1 73.9 74.3 15.8 11.1 18.0 79.8 81.0 81.8 81.9 81.4 82.3 82.5

GE 8001 61.8 71.8 1.4 14.2 76.0 lt.6 18.8 81.1 81.8 88.3 AS.8 86.3 87.2 81.3 81.6 87.8

GE SOOl 61.8 1 : 11.0 14.? 16.1 17.2 19.4 82.2 83.0 86.3 8.6 89.2 451 1 1.0 43.9 92.4

GE ADOD 61.9 72.6 14.7 15.1 11.2 17.8 80.1 83.2 84.1 88.4 91.1 92.4 44.2 94.9 96.9 97.1

GE 1001 61.9 12.6 78.3 15,1 17.2 17.8 80.1 83.2 84.1 88.5 91.9 92.7 94.1 95.5 9A.O 10.0

L. Dol 61.9 72.6 14.3 15.1 11.2 11.8 80.1 83.2 84.1 88.5 91.9 9.? 94.1 4S.s 98.0 100.]. . .•....... •................... • ...... . . . . • ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ......

TOIAL NUMBER OF OBSERVATIONS: 930

S

LOAL CLIMBTOIOUG BRANCH PEkCLNTAOE ERfE.UENCR OF OCCURRLNCE OF CEILING :IkSUS VISIbLLITYUSAF0 TAC FROM HOURLY OoSIRVATIONSg AIR hEATHER SE1vICE/MAC

STATION NUMBER: 721655 STAIION NAME: FAIRCHILD AF8 WA PERIOD OF RLL3RL: 75-RMONTH: OIC HOU6ISTI' : LSIIIOS )

... ... . .. .. ...**. **... .. .... ... .o.. ... .. ... .. . ... .. . .. ....... ................................ ..........CE IL 19RISIBILITY IN 1SAIUIE MILES

IN I , G I GE GE GL GE GE GE G E GE GL I G L L SE .fEET I I t S 4 3 2 1/e 2 1 112 I/ N1 I 31/ 518 1/2 5/I I /l 1

NO CE Il 2 7.3 Z9.9 Z9.5 Z9.6 29.8 Z9.6 29.8 29.9 29.9 29.9 a. I .I jo .3 JJ 3 30.9 3a.-

1E .00001 31. 33.9 34.1 34°3 34.6 34 6 39.7 3.9 59.9 39.9 35.2 35.2 35. 35.9 1.5 35.81. 180001 33.5 39.0 39.2 39.4 39.7 34.0 3.8 35 351 5.1 35.3 35.3 35.5 3b.5 35.6 15..GE 160001 3.8 39.3 39.5 39.7 35.1 35.1 35.2 35.9 35.9 TS.N 35.6 35.6 35.8 15.8 35.9 16.2

E 19D1D 32.T 39.8 35.1 3.3 35.6 35.6 35.7 35.9 35.9 05.9 36.1 36.1 36.3 3t. I 36.5 50.nLE 120001 34.7 37.N 37.6 t7.B 38.Z 36.2 38.3 38.5 38.5 38.5 38.1 18. 3B.9 36.9 39.0 1,.H

uE I1000 36.3 39.7 39.9 0. 1 S 49. .5 NO.6 91.0 91.0 42.0 91. 2 12 44 4 1.4 41.5 91.of 90001 31.6 91.0 91.3 91.6 91.9 91.9 92.0 92.9 92.9 92.9 92.6 92.6 92.8 92.8 42.9 1.2GE 8o00 0.48 99.3 .b 9. 9.8 45.3 45.3 95.9 45.7 95.7 45.7 95.9 95.9 96.1 96.1 HL.3 96.1

E lDca l 99.0 D 7. 98.0 98.3 B.9 98.9 99.0 99.9 99.9 49.9 99.6 99.6 99.8 99.8 5.0 56.1GE 60001 99.8 98.1 99.U 99.9 50.0 5.0 50.1 50.9 50.9 50.9 5.6 50.6 50.9 50.9 I.1 51.

GE 50001 91.1 51.2 51.6 51.9 52.6 52.6 52.1 53.0 53.0 53.0 53.2 53.2 53.9 5 .H 53.7 59.0GE 95001 98.2 52.8 53.2 53.5 59.2 59.2 59.3 59.6 . 594 5 .8 59.8 S5.1 55.1 55.3 55.6oE 9001 9.9 55.1 55.5 55.8 56.6 56.6 56. 1.1 51.1 57.1 51.3 57.3 57.5 S1.S 57.3 56.1GE 1SUO 51.0 56.3 56.9 57.6 58.9 5 5 58.9 58.9 58.9 59. 1 59.1 59.9 59.9 59.6 59.9I E 30l 51.8 57.5 58.1 58.8 59.9 59.9 b.1 60. 5 6 60.5 60.8 60.8 61.0 61.4 .2 1.5

UE 25001 50.3 59.2 60.1 61.1 62.1 62.3 62.5 63.1 b31 63.1 63.1 63.1 b.5 63.5 6.8 6.1GE 20001 59.7 61.0 62.0 63.1 69.9 69.8 65.3 65.9 65.9 65.9 66.2 66.2 66.5 66.6 66.7 1.3GE 18001 55.1 61.3 62.9 63.1 65.2 65.2 65.6 66.2 6.2 6b62 66.6 66.6 66.8 66.8 bb.O 67.1GE 1son0 55.8 62.5 63.7 69.9 66.8 bb8 67. 68.1 8 .1 68.2 68.5 68.5 68.7 68.71 .. 9 69.2(A 120 0 57.3 69.3 b.b 6:.J 68.9 69.0 70.1 70.9 70.9 I.0 71.9 71.9 71.6 71. 71.8 72.2

oE 100 58.0 65.5 67.2 69.2 73.9 73.5 126 73. 7 73 73.9 79.9 19.9 79.6 79.6 79.8 75.9GE 9001 58.2 66.6 67.8 69.9 72.2 72.3 71.5 79.b 79.8 19.9 75.5 15.5 75.7 75.7 75.9 76.5

GE 8 01 58.8 61.1 68.9 71.. 73.2 13.3 796 75.7 75.9 76.0 76.6 76.6 76.8 76.8 71.U 17.5GE 7OI 59.5 b7.8 69.1 72.9 74.6 7 .7 76.0 77.3 717. 77.6 8.? 78.2 78.9 . 7 I9.1fE 6o1 59.9 b8.8 73.0 7.1 16.8 76.9 78.2 79.2 19.7 80.1 811. 81.1 81.3 I.9 bI. 6 9.2

E 5Uo 60.2 69.6 72.0 75.0 78.1 18.3 80.9 81.6 82.0 82.8 89.0 89.0 89.2 89.3 89.5 85.1GE 9011 0.8 10.8 73.3 76.7 19.7 80.0 82.5 83.9 89.8 85.8 87.2 87.3 87.7 87.8 8.2 4.3

E 3001 60.8 70.9 79 76. 80. 0.8 63.1 85.5 86.1 88.7 90.8 91.1 92.3 92.R 99.0 99.7E oI b0.8 70.9 73.4 76. 80.5 80.9 83.8 85.7 b.5 89.2 91.7 92.2 93.9 99.1 96.5 9.1E 00l 60.8 70.9 73.9 7b.9 80.5 80.8 83.9 85.8 86.7 89.6 92.0 92.5 99.6 95.7 I3.5 I .J

bE o0 60.8 70.9 73.9 76.8 80.5 8U.9 83.9 85.8 86.1 89.4 92.0 92.5 99.6 95.7 97.5 IJ.J.. . .. * .. o o. . o. , o* .. . * .... . o .* ° . , , * , ., o .... o . °.... ,* .... .9? .. . .. . . .. . . . .......

IOTAL NUMBER OF OBSERVAIIONS: 930

GLOBAL CEIMAIOLObY BRANCH 'FCLNIAbt FE..UINLY Of OCCURINLE OF CAILING VEBSUS VISIBL ITTUSA EIAC FROM HOURLY O8SLRVAIONOAIR EAIHER OERVICE/MAC

SIATION NUMBER: 121855 sTAIION NAME; FAIRCHILD AFB 8A PERIOD OF RELORD: 15-84MONIH: DEC HOURSILTIS: 12,)o-3I4

CE ILING BISIBlIT3 IN STATUTE MILES °

IN I SE GE GE GE GE GE GE GE GE GE GE GL GE GL GL t JFELT I 10 6 5 4 3 2 1/2 2, 11/2 114 1 1/4 S/B 1/2 S/1b 1/4 0

........ o......o............................. .. .. ....... °.......,............ o.. ° ............ ..........o.......,..........

NO CElL I 23.1 20.0 25.b Z.8 26.0 26.0 26.0 26.0 2b.0 26.0 2b.0 2b.0 26.0 2b.1 2L.1 27.1

GE 20000 27.0 29.6 291 29.9 30.0 00.6 30.8 30.8 0.8 30. 8 30.8 3.B 0 11.0 11.1 12.2GE 10001 27.5 10.2 30:4 30.5 3S.1 31.4 11.0 31.5 31.0 31.0 31.5 31.0 11.0 TI.? 31.0 8a.;GE I1600 27.7 30.4 30.6 30.9 1.5 31.6 31.7 31.7 31.1 31.1 11.7 3.1 31.3 11.9 2.7 31.1UE 1 400j 29.9 32. 32.8 31.0 31.9 34.U 34.13 4.1 34.1 14.1 34.1 34.1 34. 34.1 35.1 3s.0GE 1 20001 11 3.2 36.1 31.3 31.8 38.0 38.1 38.1 38.3 38.3 38.1 18. 18.1 1.3 3. s9.5

GE I0000 35.8 38.8 39.2 39.6 40.8 40.9 41.0 '1.3 41.1 43.3 43.3 41.1 41.3 1 42.0 .2.0GE 90001 36.5 19.0 39.9 40.z 43.6 41.1 471. 43.9 43.9 "1.9 41.9 41.9 43.9 42.2 42.9 41.1GE Root 59.1 4Z.5 4Z.9 43 .3 4.1 4 44 44.9 40.1 45.1 45.1 45.1 45.1 45.1 40.3 46.0 ".5GE 1000! 40.0 46.5 46.9 41.3 48. 88 69 49.90 49.1 49.1 49.1 49.3 49.3 49. 5o] 0.oSGE 60001 44.1 47.6 48.1 48.5 50.0 50,3 50.2 50.0 50.3 00.3 50.3 0.3 50.1 53.0 51.1 04.1

GE 50050 46.9 .:1 51. 52. Z 03.4 5 4.0 54.3 54.2 54.2 04.2 09.2 09.2 54.2 S4.4 0s.2 '5. 6bE 4500 48.4 52.6 53.1 53.0 50.4 50.5 00. 05.7 00.1 05.1 5.7 55.7 55°T 00.9 56.1 571

GE 4000! 49.8 04.0 54.0 54.9 568 56.9 57.0 57.1 57 1 57.1 01 5.3 013 51.1 .1 0,0GE 30 002 54. 55.3 00.8 08.3 56.2 58.3 08.4 08.4 58.0 09.0 .50 08.0 06.7 59.0 09.yGE 3000! 51.0 00.1 56.2 07.0 9.6 59.7 59.9 60.0 b.3 60.2 60.2 60.2 60.2 b0.4 b.2 b1.b

GE 2500 52.7 08.0 58.5 54.0 62.4 62.5 627 63.0 6.1 63.31 b1.4 61.4 63.4 61.7 64.4 b4.bGE 2100 53.9 59.6 60.2 63.3 64.5 64.b 65.3 65.4 65.5 65.8 65.9 659 65.9 66.1 o6.9 61.3GE 1800! 54.0 59 1 60.3 63.4 64.6 641 65.2 65.5 65.6 65.9 66.0 66.0 b6.O 6. b6 I.o 61.4GE 1500 54.2 6G .3 63.2 62.3 65.7 65.9 66.3 66.7 b6.8 61.2 67.0 61.3 ol. 61.0 68.3 b.?GE 1200 55.3 62.3 61.4 64.9 68.3 8.5 68.9 69.4 69.5 69.9 10.2 10.2 70.2 70.4 13.2 11.6

bG 1001 56.3 63.7 64.8 bb: 0.1 10.3 70.9 11.3 11.4 71.9 72.4 72.4 72.4 72.6 11.1 3.b7 900! 56.9 64.4 60.6 61.2 13.3 1.3 11.8 72.1 12.4 12.9 13.. 11.4 11.4 13.1 14.4 14.9

GE 801 57.5 60.3 66.0 68.2 72.1 12.5 71.0 73.4 73.5 74.3 74.6 74.6 14.6 74.8 10.b ,L.GE 700! 57.5 65.9 61.2 691. 13.9 14.1 14.6 75.2 15.1 76.2 7. 8 16 168B 11.0 11.7 T.GE 600! 57.5 66.b C8.0 70.8 75.1 75.4 6.0 6 16.8 78.0 18.1 78.9 79.0 79.2 80.0 60.4

GE 50! 57.7 61.6 69.1 1.u 711 78.2 19.1 80.3 80.5 8.U 81.0 81.2 81.4 83.8 84.6 80.1GE 400! 7.7 68.0 70.0 14.4 80.1 80.6 83.7 82.1 81.1 85.3 86.6 86.9 81.1 81.6 88. 84.

GE 300 07.8 68.6 10.9 70.3 82.4 83.3 84.5 85.8 86.7 89.4 91.3 91.7 93.0 9.5 5.2 9.9GE 2001 01.8 68.9 11.1 1.5 82.6 81.3 84.8 86.5 873 90.0 92.0 92.b 4.6 9.6 97.3 99.2

E I3o 51.8 68.9 13.1 10. 82.6 83.3 84.8 86.5 81.3 90.0 92.2 92.1 94.8 95.9 97.8 100 ,

GE l 057.8 68.9 11.1 7.5 82.6 83.3 84.8 86.5 87.1 90.0 97? 92. 94.8 90.9 1,. Io.G

071L NUMBER OF OBSf8RATIONS: 930

L AL C[L IMATOLOb ,ANLH SKY COVER'•L I A, CK O EA 1, EATHE? SERVICL 'MAC

r27M.5 FAL CHILJ AF3 .A 7t-84 AJG

PERCENTAGE FR-Q [ENC C-

OCCL. WE\C-

FROM HOURLY OBSEF, 'TLONS

r. L 44-1 i .2 . 12. 16 L). 3.5 1,3

... . . . . ... .. ,,. .

.-,--o 25.2 .. 3.6 16.1 15.1 4.3 92

-0 I,. 4 3.4 2,.4 12.1 4.9 9?

, -11 1 .2_. 422. . . .-. 2'.3 14.b 5.0 93

1 -1- !1.1 .. . .. . 9 . ..1. .. . . . . 3.2 14.3 5.5 93

1- -17 11.4 4.7 30.4 13.4 5.t_ 93

-2 12 . _.1 , 26.9 12.3 5.0 93,

1-231 3_3.9 _ 3.,.5 14.2 12.9 S. 8 92

' ' A.

2.1 JI.9 22.b 13.9 4.7 743

A " 09 5 (OL A) lReVIOIS EDITIONS OF

THIS FORM ARE OBSOLETE

- •- -lII dll•la /n

ml l i

UL 'PAL CLIMATOL06Y "rhANLH

jAfrEtAC SKY COVERA , ,EATHER SERVICE/MAC

4

1278'5 FAL CHILL AFb .A ss-eq p

ERCENTAGE FREQUENCY 0" OCCURPENCE

FROM HOURLY OBSERVATfONS

4 6

*0-02 44 . 2t.4 14.2 16.6 3.7 900

-0" 3 .6 31. 15.3 17.3 4.1 8961

I f, 41.2 2f,.3 17.0 5.3 899

- 1I .1 41. 26.8 16.1 5.3 900i

1 - 1 13.4 35.9 33.1 17.b 5., 9110

I I 1 4 4;. 3 30.2 16. 1 5.5 9901

- 22.2 41.4 24.0 12.3 4.6 899

21-2 3 3 .6 3. 12.7 lb. 1 3.7 990

, ! i i , _

-( EDI THI FOI . .LE2T. 16.1 4.8 71941

S USA FET AC . 94 0 5 (01 A) PREVIOUS EDTIONS6 OF THIS FORM4 ARE OBSOLETE

Ut '-AL CLIMA I /,OL,6 3 ITAINC HA' L TtC SKY COVERA ::, -EATHtFk SEFVIC[ MAC

AZ~ LiCILD AF-b mA -75b4 OCT

PERCENTAGE FREQUENCY OF OCCURRENCEFROM HOURLY OBSERVATIONS,

F OP' 7S1.- Or~OS 'PS

n 2 2 3 3 5 6 269 4' "

-O 0.0 ! _ 2.,.7 -..... . . .. 13.8 27.5 4.9 904

- '.7 f _ 35. 4 27.4 29.9 6.5 9915

. -11 *5 343 2.3 314.9 b.7 921

,-lfl 6.3 i 31.% 31.0 30.8 6.8 930

__1 -I11 6. 3 3-6 1 32.3 :9. 2 6.. 93o

zo I _ .-b _ 31.3 26.7 26.5 6.0 930

1-23 25.5 ib.9 ____19.10 28.2 5.40 916

I ______

OTALSU 7 39 29.2 6 7351

USAFETAC uo 0.9 5 (OL A) PREVIOUS EDITIONS OF THWS FOIM AEOBSOLETE

UILF14AL CLIMATOLObY 'hAINCHSK COE;*A' TAC CK O E

AT' .EATHER SERVICL.'!MAC

2 7 P5 FlhiiHILU AFB6 A 75-84__ NOV

0 PERCFN7 AGE F OL ENCI U- OC( RRNCEFROM HOURLY OBSER.ATIONS

:002 1 .7 14i1___1.6 49.6 6 .8 856

U 15 R'1.1__ 1 3.7 57.4 7.4 86 1]

-w 4.. 1(-.4 19.8 58.3 81.1 873

11 4.2 il.? _ 2f'.9 58.7 8.2 8891

I1 3. 1_ 1L .4 2, 2.1 54.9 t". 2 8991

-1_ 117 4. 2 F .1 49.4 7.9 8991

1 -2C 11 .. 2. 16.6 48.0 7.1) 891,

-1-23 1 b ._ _ 3' .13.7 48.7 6.7 . 7

____________________ .___ 19__ _ _ _1_______3.7 1 S3.1 7.5 7OU4 l

J TA FETA C o -9 s (OL A) PREVIOUS EDITIONS Of fffIS FORM ARE OeSOLETF

(L lAt CLIMATOL0(if CSKYCOVE%A!LT A CSK CO E

Al, EATHER SERVICL/MAC

L2JML5--- EAiHILDLAEA3 --KA U_ b84I! C

PERCENTAGE FRLQUENI-Y OF 0~CC Pw',-

FROM HOURLY OFSER AT!ONS

.0 C__________ 12. R -4 . 1 7 . b1

~-. 1 ~ F 3.9 bs.l 1.4 691

LvU L-* 14.4 ______ 63.s, b .? 91L

-1 3.1 161 __________ _ IP.3 It, 8 .4 911

_1 __14 - 1-. -__ 2C.4 bf0.2 -8.3 921

1 -1? 4.14 ____ .6 _________ 1Q.9 57.4 8.1 92'

F-20 10.? 1______ ____. ___________ 14.2 SL.8 7. 7 91(

3______ 14.4_ 14.0 12.9 58.8 7.5- 9 1

LOA____ ___ L ___ 1.6 b0.8 8. 726!

0 A ~-A C P F REVIOULS EDITIONS OF THIS FORM ARE OBSOLETE

,L.'-AL Ct IMATOLOGY AkANCH

A *,VE T AC SKY COVERAl'- -EAThER SERVICE/MAC

727855 FAi CHILU AFH ,,A 75-85 ALL

PERCENTAGE FREQUENCY O OCCURPENCEFROM HOURLY OBSER.-ATIONS

O T L S T - .. ' ' "

, 2

t. ALL .4 1.. 14.3 6S.1 E.2 7328

E3 .1 1 .2 21.S S8.r, 8.1 6762

.0 22,) ~.6 96 7.0 7419

. P .1.0 21.5 -26.5 35.1- 6.7 7179

o_, i 3c,. 7 2Q.1 31.3 b.7 73771

3U. 09.4 24.0 6.2 7002

.41.5 21.7 14.8 4.7 724

"42.1 £41.4 _ __122.t, 13.9 4.7 74331

2I 3.l 27.8 16.1 4.8 7194

43, I1..3, .7 23.9 119.2 b.0 7351

N- 1. . 1,;.13 lR.7 53.1 ' 7.5 7uq4

DC .. 15.3 I. 8.( 7265

OTALS .1 21.6 22.6. 36.7 6.6 8661

USAFETAC JU 64 0-9-5 (OL A) PREVIOUS EDITIONS OF THIS FORM ARE OBSOLETE

- .i

U S ALti JI'FNVIIIW FNTrAI THM1NI(Al,

I thiq rr~ 'ile ,'e~r varli)u orryar 1-11- 'I .,, ~t -i ol>; L~ji-' li-t 1-1, 'i I- Ii t'i, Fuld Ce I t Lt !

bum 1.di J t. llier lrid wibourer of 111' entai ons l I

1. Oumu)ntIve )Lercru1"nle freqouency oi- occurreect dleriLv. d Iur dolly plcinIIiti re-ented by lsojth

ojdtrnntfor-tit i. yei ! comb - .1 ct . ' Th ese t btit L nloll ic ow 1,, ttit 11111 I t i v,- pe rcE nte f requenc y t'tet.- a Lt sof t (- mpe, !,'' u re bh 5-deq ic t-,niidtrerihej J L ii rcmii , L pb rv wh r! .'mpn rfi t i v , t; t idJard deviatiLong, Find

'. el 1 5, me.') of oboe ! V'-i-aS i- I thee pidjaitL.,-'t ti b: ~ ,f i

o. D0ily iixirim temi'rititure'jb. Dttly m.Inimi.r'i terpIrin ure']c. Daily mean t--iper Oi orea

O'fE : Bleginning (In Joanry l.9t7,1, daily mrfxlmori id ininii ur teiopexnL'ires arc rutinely selected fromho-urly observationii rv!cozdzd on surfbce cheery tag f', ru~ or from nirtoihited dta coll-ctions for alAir Force operated tatirq. For thorle sttiit 11 obveC1v i)r 1(-r thani ;14 htius per drty, and where maxi-

wim and mI.ialsnrm ks-mptxrtr ave requiired Wut iert r'' rOded, Oheae are aLso' iclected from hiourly diatafrom an early rr JIan~viry t9

19g and Inter, I'1 e 113e revfer tu,) r)La t. loris , 'ri Ltti YIO [,tg es a Fd S tatLion His9tory

i'or fnirrter inforrmnat!.cii on reporti-ng practices, (of knit htmtl t~atlons.

P. Extreme values - derived from diii ty uhscr11vitiODO WWIh the extreme value ielvcted for each year and month ofrecotrd Pevuiloshle An asnuiatl (Al.. MONfIlV) vuot is, -clcctc' ' ri ll irintli for it yt'ar have valid extremes.MeanIS antd StSiadai,1 det' fat i 'i tre computed tl i uL wotiti aal ruirmuat when I our ori' tirci % toes are present forany colc'mn. Twoi tables of tialy exremes art pivpte1 'ec

a. Zxtreme maxilmum temperatur#eb. Extreme minisuiin ternpe rature

NOTE: The followling iymsbolo suce used InA thie ixstremu usta tA.ockB.

(1.) 'indicates the extreme wt'ae selected flor a it 'niTth with urie )r nr OiLYS ml;tng.

(2) ftIndicates the extreris wais elected fro01 n mt11,1 ilk Which ti()lcy Lvmperetur-s were availablefor less than 2); hours for at least one day in the month.

£ llnrloee for ms'r:iui ;fi tndr devi tiii do ii,,L i -l-' 1'('rU ifltomvdt''

tA 'innrif-. CAOL lnued)1 n Reverse

D .Iivariate I~L~~f fre tincy dis~i-16ttion utd jiupututrajof' dr ultb veriius tet-bulb te re Lurc.

These tables hay, been t mporarily discontinued for the fiusswo ren lino th, i -ive~ of RPS ' in mid

t.Menns and standard devitlorj -'leje ttluttoao are derived fru thcurly ublservatiui biud pretielt tile

*1 ; ean, tadr-ddevAtio-n, ciiin Ltt nuibu~r f uctailn. for the eighit bewilrd 3-11-ur erouPS, b)y i1,,rthand annual and agatn at the bottoml for till t.]ir corlinud. Records for all ycwrs couibiiied are pre~entedin the following three tL0l ra; Dil'-EIULi TEMIIERN'OWE, WL'1-IiULU IVEMPEIIATUIIE, anid DEW-IUVIr MERATUiRuE.

5.Cumulative pereltagfej :Zc uf OCCurIrenCe Of -eltive~t humidity - This *auiuna -y is derived fros hourlyobservations and prejcnti the ikvilaltvt: percentage frtequetnCy of occurrence of' relative huiidity byincrements of 10 clasje3, ptua the mewt reletivc; humiity and total number of obiervatlona in two tables.

a. Table 1. ill pre pare~ by w jnth and tijujtual., all yet'ra c I mcd, with tivouthi hetIng the vertical arginnt

b. Table 2 is prepared 1, minth by tUindbrd 3-hour gcoup.i, with the hour groupi beindi the vcer~tilargument and it :eparte puge for tcctivmoth. All y..Ulrs are hl2o ionvhile~lt',hr Lh', tsusasary.

GL:&UAL CLIMATOLOGY 3RUANCHUSAFT AC DAILY TEMPERATURESA1^ AEAIHFR SERVICL/MAC

72785r FAIPCHILD AFB wA '40-8iSSt IO' S'AtION NAME

CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE AXIMIJV(FROM DAILY OBSERVATIONS

* TEMP 'F JAN FEB MAR APR MAY JUN JUt AUG SP 0( 1 NO, DE( AN.'.

100 1.t .5 .14:1 .5 5.4 4.2 .1 .9

> 9 .4 3.1 20.8 15.7 2.5 3.6

I.1 1.9' 10.3 40.6 34 .2 7.2 7.9> .7 6.9 21.4 61.9 5b.0 21.2 .6 14.2

. 2.Li 1. 39.2 78.1 73.0 36.3 3.5 20.86,T .3 6.5 31.6 58.3 90.3 17.5 5 3.9 16.1 28.4

6, 1 . 14.6 49.5 78 .3 97.6 95.4 70.b 20.8 .2 '6.06 .2 5.1 29.1 b:>7.0' 92.6 99.3 99.1 86.1 37.7 .5 43.4

.I 1.1 12.8' 48.1 P4.5 98.3 99.9 99.9 95.2 58.6 3.5 .2 14.6

7 6.4' 27.5 74.1 ' 6.1 99.7 100.0 99.3 80.3 14.5 1.7 €c-.8

4 5.1 19.4 54.3 93.5 99.6 100.0 C 100.G 100.0 92.7 33.4 8.9 b7.74C 16.8 42.8 78.9 99.5 100.0 98.0 59.7 24.9 77.13> 3. 71.b 92.7 100.0 99.7 79.7 48.1 8b.0

6. q'8.1 97.3 99.9 93.5 j2.4 92.72 76.2; 94.L 99.4 1tO .0 97.8 86.6 96.22.; 6'.6 98.1 99.9 9Q.3 93.6 98.0is 92.4 99.2

i 99.9 99.6 97.1 99.0

ID 97.3 99.7 1tJ.0 99.b 98.7 79.b98.9 99.8 100.0 99.3 Q9.8

.' 9.7 I 1 .1 99.f, 99.9

_- -L Ii .a *9.8 100.0Ill lo .0. 120.0

>

MEAN S -. A -- , - 1'805.9MEAN 3:!.6 _!3.0, 45.6 Sb.' 64.6~ 72. 0k 81. 80 .2 0.6. 57.1. 4 1. 33.5 55.9

SO 9.686i 7.911 8.085 8.345 9.427 9.U921 8 .70 8.8b8 9.813 9.021. 7.887 8.642 19.1436

TOTAL oS 1336 1 21 1364' 1356 1395 1320 1358 1333 1290, 1333 1298 1333 IS924

USAFETAC 0-2 1 5 (OL A)orlOss SpSI5 O -5$ FOM AN OLOETF

GLCQAL CLIMATOLCGY RRANCHJ A-- T ANC DAILY TEMPERATURESAl, wEATH-R SERVICEz/MAC

72 7135 FAIRCHILU AFB wA 40-85

CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE MINIMUM

FROM DAILY OBSERVATIONS

'EMP ° JAN FER MAR APR MA, JUN joi AUG SEP OC NOU "> 7': .1 .0

7 .2 .7 .2 .1E, .8 9.5 6.5 .3, 1.4

.1.L . 32.0 24.6 3.2 5.8. 4.8 24.9 62.1 57.5 14.4. 1 13.8.9 19.7 S3.8 87.0 86.6. 43.3 2.8 .1 24.7

4' .1 .2 .4 6.5 45.4 82.7 98.2 97.6 72.? 16.8 ., .3 35.3_ It) Z.2 '4.b 26.1 73.7 97.3 99.9 99.8 90.3 43.8 6.9 1.6 45.9_ ', 5. Ii.6 20.1 58.3 92.8 100 .G 100.0 100.0 98.1 714.0 24.7 1n. 1 58.3

" , 12.1 17.9 33.5 71.3 97.7 99.3 82.6 37.2 17.3 64.524.4 3v.8 59.8 89.6 99.6 99.8 92.3 57.5 32.2 74.944.6' 6h, 86.7 99.3 100L. 100.0 98.9 80.0 57.0 96.4

-, o3.- 84.3 94.9 1D0.1i 99.8 91.6 T4.6 92.51 75.4 o1.8 97.7 100 .0 97.8 86.3 95.8. '3.1 %7 99.3 99.1 93.2 97.5

8'Q.6 9b.1 99.7 09.5 96.0 98.6i f 94.3 09.0 99.9 99.8 98.1 99.3

-5 97. 99.? 100.0 99.8 99.2 99.6I, 99.0 9.8 100.0 99.6 99.9

-15, 99.6 99.9 99.7 99.9-?0 99.9 1lfl.U 1 il0. 1:0.0

_- -2 0 ., 1 iI. u u 0

MEAN 20.9i 26.f 3(0.1 366 43- SO. 5. 556 48 0 - 38.3

36. 438 5.4 6. . 8. 38.4 29.8 24.4 3.U 1 3 2 i" E. I II 6 .029 5 .4 47 6 .3149' 6.U 161 6.011' 5.6991T 6 -329' 6#07710 .81 1.3

TOT A 08S 1330~ 1214 1364' 1350 1395 1320' 1358' 13 33' 1 290 1333 1298 1333 1592141

USAFETAC 215OLA*o. O~* *S0 **

t 1AL CLIMATOLOGY IkANCH

'A VE A C DAILY TEMPERATURESAlk- .EATEN SIERVICE/MAC

, 27,Pq FAIR CHILL, AFb 6e 40-3r

S. A" hN STAJION NaAME '

CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE ,IF AN

(FROM DAILY OBSERVATIONS

'EEP 'F JAN FEB MAR APR MAY JUN JUL AUG SEP ocr NO, DE(C A.5 .1 .1

P. .3 5.8 4.4 .9

7. 3.3 24.4 18.8 2.. '4.1

7. 2 .s 14.8 1.3 43.4 9.3 1.26 .5 9.1 31.7 73.0' 68.9 26.9 .6 17.7

2.3" 25.7 56.4 90.7' 89.5 49.i 5.6 26.8

.1 9.9 47.3 83.1 98.7 97.7 72.3 16.9 .2 !5.851 .1 .2 4.1 27.3 72.0 97.3 99.8 99.9 90.5 4 0.5 .8 .2 44.74', .3 13.b 53.E 92.4 99.9i 10 0.0 98.b 68.3 9.9 1.2 53.9

4c E.2 14.4 40.5 84.1 99.5 100.0 100. 0 99.8 88.8 ?9.5 8.8 64.73r Z,. .4 4 1.4 74.3 99.7 100.0 100.0 97.i 58.b 27.5 76.9

41.8 71.2 9(.8 1O.0 .. 99.7 91.b 54.5 86.862.9 '.7.3 96.S 99.9 93.8 74.9 93.0

2 77.'4 93.7 99.0 100.1 Q7.9 87.9 96.4

1 8'.7 97.2 99.6 09.2 93.9 97.9

l i 1. 1 98.6 99.9 99.6 97.0 98.99 E. 99.3 1c0.0 99.8 98.7 99.58,b 99.7 IP'0.0 Q9.3 99.8

-- Q9. , 99.5 99.9

--I ,9.' 1 .U 99.8 170.0

EAIt C5. . 43.U '.5.9 54.4, 61.4 69.2 68.1 59.5 47.9 35.6. 29.1 47.3

S 10. 31?2 7.F,2 6.550 6.286 1.315 7.003 6.90 6.78917.488 6.94i3 7.108 8.762 16.376

'GA 'JE, 133 1214' 1364'

13S d0 1395 1320{ 1358 1333 12901 1333 1298 1333 1592

USAFETAC '.0 5 (OL A)q"-, e -s o ,-,s ,0E *Y OSOL

4 GLOBAL CLIMATOLOGY BRANCHUSAFETAC EXTREME VALUESAIR WEATHER SERVICE/MAC

MAXIMUM TEMPERATURE

'RO bUli O' ~ a'

72785.5 F A IRLH. EB A 4J1_--ALwTAJON STATION NAMf VEART

WHOLE DEGREES FAHRENHEIT

YEAR IAN FEB MAR APR MAI JjN JUL AUG SEP OCT NOV DEC MONTS

4.) 75 89 97 100 97 92 77 54 5241 47 ST 70. go. ea. 92. 104. -9. 7 70, 58. 5B . 104.

4? 47 48 70 83 82 92 9843 * 53 -

44 * 31 61" 74' 84 90" 95" 90" 95 75 55 50

4 SU 51 5a 72. 81 88 95 94 89 77 60 46 95

4b 44 50 63 85 80 87 91 96 84 63 50 51 961

4 7 4S 57 68. 77. 84. 85 , 97 - 92 86 74. 50. 45_ 9 ?4h 40 53 62 71 84 90* B8 84 90 73 50 42 90

49 36 49 5b 78 88 90. 98 91. 91 64, 57. 46, 98

i41 46 49 67 79 89 95 91 94 67 59 49 9 551 - 43 51 _ 56 71 83, 85. 96. 93. 84 73 50. 47 96

34 9 45 62 81 81 86 96 94 90 79 56 39 96153 5 1 51 65 68 83 80. 95 98 90 75 59 46 98

54 48 53 58 70 S5 81 91 89 85 65 55 46 91S5 39 45 49 64 74 96 95. 9U 9z. 67. 54 46 96S 46 41 57 77 86 81 95 95 83 73 48 49 95

- , 52 54, 61 85 87 90. 88 86 65 52 53 905 46 60 59 6 p 1 93 92 95 91 79 56 5 955,; 49 46 54 68 79 87 I00 93 87 66 58 51 100

6L 5'5 45 70 70 80 95 I0 O 94 84 76 52 46 100

1 4 d 5 8 s 6 8 4 9 3 9 3 . 1 0 4 , 7 7 . 7 6 4 7 , 4 4 _ 1 0 "6 2 4 F 55 9 75 71 90 96 91 84 76 52 47 96

63 - 4S 54 61 71 8l 88 86. 92 89 80 54. 39 92

64 41 41 68 60 81 83 98 88 84 75 53 47 98

6 5 4 1 , 4 8 6 0 6 9 7 b. 8 6 9 4 9 5 7 8 7 7 . 6 8 4 8 9 5.

66 49 49 68 70 93 94 91 98 92 76 57 50 98

61 - 51 54 5 S S9 79 89 1n3 101 91 72 52 44 10368 62 63 78 90 91 102 93 85 68 48 53 102

69 * - 40 64 76 84 _ 92 _91 99 _ 89 70 58 46 99MEAN

SD -NOTES ( (BASEO ON LESS THAN FULL MONTHSI

USAF TAC "" .4-5 (OLA)I (AT LFAST ONL DAY LESS THAN 24 OBS)

...- - .

5LJFPAL CLIMATOLOGY 1.ANCH

USAfI TAC EXTREME VALUESAlI4 WEATHFQ SftVICt/PAC

MAXIMUM TEMPERATURE

727855 FAIkLHILD AFH &A 40-85

.HOLE DEGREES FAHRENHEIT

* ~ P ~ ' ~ E.. JuL AG SEP OC T 10 [f

7 44 51 f, 61 84 96 99 99 83 p1 60 4 9971 ,9 53 54 69. 81. 89. 97. 101. 83. $0. 51. 4Z. 10 1

7 4, S6 71 71 85 87 92 101 83 72 54 48 1017$ 4 52 b 67 7 97. 94 92 95 68 56 47 9 7

14 46 4 3 8 67 74 89 95 93 63 72 50 47 95

1 39 42 48 b1 7b. 78. 101 88 85 82 67 51 101,

76 45 46 57 (-a 78 91 94 87 9U A 1 56 50 94:

17 45 56 59 86 78 89 96 100 80 65 53 49 1U007 42 44 64 68 74 89 96 95 84 73 5 39 9617; X " 47 62 71 8. 89 103 92. 9 77 49. 408 13

4: 41 51 2 77 p 80 95 84 82 83 58 55 9511 43 55 62 h 0 75 83 92 96 93 70 59 46 95

41 53 56 68 78 91 95 95 89 68 53 5"] 95

8 5 5 0 , 3 57 69 92 83 88 92 81 66 55 38 92!84 47 49 Sb 75 R1 86 100 96 87 79 so 38 100 i

15 34 39 58 75 84

MEAN 44.;' 4 : 59.5 72. a 81.6' 88.. 0 . 9 ' - . 5* 73. 1' 54'.. -47.1 97.45 D 5 . rU .4{.T 5.671 6.587' 4.705 4.570 4.034 4.553 4.543S.10' 4.547 4.430 3 . 4 A

TOA 9 1;13 1356 1395 1 32(f 1358* i333* 1290 1333 1298* 1333 159241NOTES * (BASED ON LESS THAN FULL MONTHS)

USAF ETAT LA 0NF SOA)a fA LEAT ON DAYLFSTHAN74GOS)

GLUPAL CLIMATOLOGY ?PANCH

JUAFLTAC EXTREME VALUESAIR wEATHER SERVICE/MAC

MINIMUM TEMPERATURE

727855 FAIRCHILL AFL kA 40-5

.'HOLE DEGREES FAHRENHEIT

a ' 'E B AR APR A , .j N JJL A UG SEP 0C T1 'o s DMf( A -'EARON.

4.. 34 39 4b 50 49 46 36 10 ic41 15. 23 23 28 35S 4S. 52, 47 35. 28. 20. 12 1242 -7 3 22 30 34 41 4843 1 30

44 * Ib 16 28 31 39 4C 43 34 34 16 34', 12 18 5. 23 . 37 44 41 33. 25 10 7 5

41 lf 17 25 28 34 36 41 41 33 22 16 4 414 7 -4 15 22. 28 42 43 48 40. 38. 32. 21 17 -41

41 11 2 14 22 31 49* 45 45 33 ?s 20 -2 -2

49 - 1 - 1 0 20. 30 32 41. 4. 46 36. 23. 26 4 - II.. -21 -18 7 2b 33 41 46 35 32 ?9 20 9 -21i

51 -2. H 12. 2. 35 41. 4b. 45. 36. 26. 20 -8 -

5/ -9 11 19 29 33 39 48 46 42 33 13 13 -95 24 22 25 26 33 40. 47. 46. 39. 32 24. 22 221

,4 7 1 27 28 36 43 42 37 27 24 10 -5,5* i 10. -3. 25. 30. 41. 40 46. 38. 26. -6. 0, -6Z5t -b -b 9 27 32 38 49 44 38 30 15 7 -81s7 -1 1. 18. 32, 43. 41 46. 45 37 24. 18, 18 -1l5r I 1 27 23 10 35 43 47 48 3L 29 12 21 12

- -4 IS 22 29 28 38 '44. 40 37. 26 3. 17 -4

hE -1 7 3 26 31 37 46 42 39 76 22 10 -161 11 22 20 26 33 39 4b s1 33 24 13 -3 -3

62 -s 6 5 29 29 36 38 41 36 33 20 14 -8

- 4 11 23 27 32 43, 45. 46 '41. 2b 18. 3 -464 9 1L" 13 23 32 39 48 43 37 27 15 -17 -1761 16 is 2S, 27 40, 46, 39 26 26. 22 13 -ll

61b 4 ,: 1 18 24 29 41 48 41 44 29 19 14 416 21 22 20 29 33. 47_ 45 50 38. 30. 16. 6 66 4 ?1 25 22 31 38 45 45 37 3J 19 -18 -18

61 8 12 . 32 35 4 . 47 43 39, 74 19 15. -10'ME AN

TOTAL 06

NOTES *(SASEr ON LESS THAN FULL MONTHS$

USAF ETAC 04W5- (aLA)# (AT LFAST ONF LAY i FS THAN 24 085)

L A)-AI59 700 FAIRCHILD AFP VASHINGTON REVISEO UNIFORM SUNIlARY OFSURFACE WEATHER O8SER,.(Ul AIR FORCE ENVIRONMENTALTECHNICAL APPLICATIONS CENTER SCOTT A.. SEP 05

UNCIASSIFIED USAFETAC/OS-051051 F/O 4/2 NL

M liii 1 0 __ 112-240iI- . 111 220

1-h25 I 4 fi6

GLOPAL CLIMATOLOGY 9RANCHUSAFLTAC EXTREME VALUESAIR WEATHER SERVICL/MAC

MINIMUM TEMPERATURE

FROM DAILY 06SERV- ONS

STATION STATION NAME YEARS

WHOLE DEGREES FAHRENHEIT

MONTH ALLMEA T )AN FES MAR APR MAY JUN JUL AUG SEP OCT NOV DECYEAR MONTHS

7., 8 27 15 28 37 42 48 51 32 28 8 2 271 13. 15. 6. 28- 34., '4, 38. 41- 35. 18 22. z. 27? -6 -7 23 22 31 42 44 48 29 23 24 -1 -773 4. 17 28 26 35. 37 42 44 39. 33. 18. 12 474 -5 25 22 29 31 40 45 49 38 26 23 8 -S75 i 11 20. 25. 33 42. 52. 50 40 27 11 IS 176 lb 13 12 28 34 37 47 42 37 27 16 15 1277 -1. 19. 23 24. 33, 38. 45. 46. 36 28. 7, 5- -I7o 1 21 18 29 32 42 49 '44 34 25 12 -17 -1779 -10 -9. 23 2 ,. 35. 35 41 50. 44 30. 17, 20. -108 j -1 13 21 27 39 39 47 37 36 27 20 10 -I81 19, 5 26 21. 33, 39. 40. 51. 37 29- 21 16 51 2 -8 7 26 27 30 40 42 50 39 26 12 7 -88 3 11 20 25 26 34, 42. 44. 48 33 30 21- -10_ -1084 6 21 28 29 32 35 46 40 32 15 21 -1 -185 1 -7 18 29 27.

[MEAN 2aI 1 1792 7-.2' 33.V 40.2 45_.3 44.7 36.## 27.3 16. 6ib.64 -2.8S D IU.56910.551 7.1-02 2.6741' 3.454' 3.139 3.320 3.960 3.96&1 4.015 6.224. 9.991 _ 9.350

TOTAL OS 133E 1214 1364! 1350 13951 13201 13581 1303 12901 1333, 1298, 1333, 15924NOTES * (BASED ON LESS THAN FULL MONIHS$

USAF ETAC " 040-T (OLA)A IAT tFAST ONF nAY IFSSc THAN 24 OIRS)

.,L2EIAL CLIMATOLOGY BRANCH:)SAFE TAC MEANS AND STANDARD DEVIATIONSAI, .EAThER SERVICE/MAC

[RY-BULB TEMPERATURES DEG F FROM HOURLY OBSERVATIONS

127 5 FA lIlCHIL. AfB WA 75-85

STATSN STATION NAME YEARS

HRS L S T JAN FEB MAR APR MAY JUN JUL AUG SEP I OCT NOV [ DEC ANNUAL

MEAN 2.3 3L.1 3 ,.0 40.8 47.3 54.5 61.5 61.6 52.8 142.5 33.1 27.11 42.

-U2 SD '..14al 7.8-1 5.318 6.789 6.444 6.b73 6.940 6.826 6.579 6.497 7.521 9.5191J 14.338TOTAL 085 93G. 649 931) 90, 91b 8140 868 930 900 930 900 93U 10823

MEAN 24. ?9.4 33.5 3b.5 44.7 51.5 57.9 58.2 50.1 40.5 32.4 26.b 40.7j-l0 S D 9.382 7.775 5.316 6.459 6.310 6.370 6.355 6.218 6.082 6.299 7.48 9.617 13.332

TOTAL OBS 9 3 4 9 931, 9 Lit) 923 870 899 930 900 930 91)0 930 1089

MEAN 24.3 2'.2 33.6 40.8 48.9 56.2 62.4 61.5 51.8 40.8 32. 26.5 42.L- SD 9.1471 7. 7V1 5.422 6.957 7.134 6.882 6.932 7.008 6.590 6.614 7.52 9.727 14.97

TOTAL O S 30 849 929 9 11 93U 900 93C 93 899 93o 90O 930 1095

MEAN 25.. 31.9 39.4 48.6 56.2 63.7 71.2 70.8 61.3 48.4 35.2 28.2 48.-l1j sD .;75 7.819 6.L93 8.016 8.185 8.131 8.470 8.463 7.923 8.025 7.886 9.504 17.66

I] TOTAL OBS 93. 849 930 9 0 930 900 930 93 900 930 900 930 10951

I MEAN ?7 ? .4 35.4 44.2 53.3 60.4 68.1 77.0 77.0 67.7 54.5 38.6 30.5 53.C41 SD 8.788 8.248 6.707 8.9t,9 .925 9.170 9.517 9.235 9.169 9.245 8.396 9.253 18.94!

1 TOTAL OBS 93 b49 930 9L0U 929 900 93(- 930 900 930 900 930 109s

MEAN 2L . 4 36.0 44.9 514.F. 61.2 69.5 78.8 78.6 68.9 54.7 38. 30.11 53.I1-li! SD b.51. 8.243 6.843 9.377 ,.077 9.1483 9.585 9.502 9.718 9.464 8.17 9.137: 19.57

TOTAL OBS 93 6149 9301 900 928 898 930 93 900 930 900 93Ci 1095MEAN ?,.7 33.3 40.4 49.6 56.9 65.8 74.9 73. 62. 18.,6 35.2 28.1 149.

-2 SD s o700 7.110 6.251 8.994 F.534 8.925 9.000 9.11 8.773 7.91 7o598 9.481 18.4141TOTAL OBS 3, 849 93U 9io 918 869 902 93" 900 93C 899 930 1088

MEAN 25. o 31.6 37.2 414.5 50.9 58.9 66.9 65,.1 5b.5 144. 33.7 27.5 15.

1 23 SD 8.800 7.528 5.495 7.696 6.918 7.416 7.689 7.88 7.331 7.06 7.485 9.758 15.82TOTAL OS 93 b'9 930 9l 910 83 873 93 900 934 900 93 J 10821

MEAN 21.2 32.1 38.5 46.3 53.3 61.1 68. 68. 58.9 146. 314. 28.1 14.-HR SD .U99 8.224 7.274 9.732 9.69 10.114 10.9610.86 10.36 936 8.08 9 q 17.42IOURS TOTAL OBSj[ l#44 6792 71439 7200 7384 7011. 72621 71414 7199 764 7199 7__ 8725,

USAF ETAC 'oft 0"89-5 (0L A)OClr 0-9- LA

GL(,,fA( CL1MATOLOGY '-RANCH"'A'LTAC MEANS AND STANDARD DEVIATIONSAm .EATHER SERVICE MAC

.ET-BUL8 TEMPERATURES DEG F FROM HOUPLY OBSERVATIONS

7279 5 F. LHILD AFB ,A 75-85

SA 1O STATON NAME YEARS

HRS L S T JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL

MEAN 24 .3 87 32.d 36.8 42.6 48.5 53.2 52.7 87 39.1 31.6 26.u 38.

0-02 SD ,.2 71 7.784 5.395 5.8i3 5.4-3 5.480 5.332 4.536 5.381 5.730 7.331 9.358 11.78TOTAL OBS __ 9304 b49 93L 9(.0 907 840 868 929 900' 930 901 93. 1081

MEAN , t 28.2 31.7 35.4 ,,1.2 47.1 51.7 51.5 45.8 38.0 31.1 2S.5 37.

3 SD 9.42 7.784 5.442 5.717 5.571 5.518 5oZ75 4.587 5.440 5.837 7.371 9.455 11.55;. TOTAL 085 93 e E49 _ 930 899_-- 914 870 899 92 90E 930 90C 930 1088

MEAN,, 23.5f 2-. 31.. 37.1 44.d SO.2 54.5, 53.8 47.2 38.3 31.L 25. 38.860 1 SD 9.5 '4? 7.733 5.501 5.817 5.530 5.320 5.007 4.523 5.577 5.971 7.422 9.583 1 z526

, TOTAL QE5 93 849 929 9r,0 922_ 903 89 930_90C 930 1091_

ME AN T 2.T 30.2 35.8 41.7 47.9 53.5 58.1 57.8 51.9 43.1 33. 26.9 42.-111 s D .9991 7.624 5.46 L 5.9U9 C .516 5.148 4.

9 6 9 4.30 S.343 5.881 7.39 9.239 13.13TOTAL OS 929 849 93ti 95J0 924 930 93U 930 899 93q 90q 9301 1095

MAN - 38.5 43.71 49.4 54.7 59.5 59.1 53. 45.8 35.4 28.7 4.12-14 SD 8.55 7.51.:. 5.593 0.1781 5.514 5.191 4.855 4.151 5.276 5.961 7.42 8.777 12.83

TOTAL OB 93 t1 4 9 93-, 9u I 923 9,0 93L 930 90[ 930 90 _ 930' 1095

MEAN ?6b. 33.ui 3G.8 43.7 49.3 54.9 59.5 59.0 53.5 45.6 35. 28.4 44.15-I

f' SD b.373 7.495 .610 6.146 5.407 5.146 4.684 4.043 5.132 5.969 7.31 8.798 IZ.79!TOTAL 085 ' 149 930) 91t: 911 898 93 930 90 930 90 933 10949

MEAN 2'.. 5 31.1 3b.4 41.7 47.7 53.7 58.3 57.0 5U.8 42. 33. 27.1 12.(

-2 SD T.7?.? 7.4O 5.581 6.233 5.417 5.262 4.822 4.292 5.09 5.759 7.19 9.315r 12.789TOTAL OBS I 3 849 936, 9LG 908 869 902 930 90R 90k 899 929' 1087(

MEA-N 24. 29.9 34.3 39.:j 44.7 50.8 55.4 54. 48.4 40.4' 32.0 26.3 39.1

I 23 SD 8.8')I 1.4361 5.401 6.070 5.257 5.317 5.127 4.424 5.21S 5.83& 7.185 9.575 1Z.ISTOTAL OBs 93 E49! 930 9

(u 901 839 8?3 93 900 930 909 930,1 10812

A MEAN 2, 30.21 35.u 39.9 45.9 51.7 56.3 55.6 49.81 ql.t 32.8 26.8 40.42'. SD ,.034 1811 6.103 6.716 6.184 5.977 5.734 5.15 6.04 b.558 7.495 9.3331 12.67HOURs TOTAL OBS 743 ? 6792 q 7199 7316 701 7262 743 71981 7440 719i 74391 8717A

S USAF ETAC 0-89-5 (OL A)OCy Is

GLo AL CLIMATOLOGY fUAKCHL'SAFf TAC MEANS AND STANDARD DEVIATIONSA JI. kEATITER SERVICE/MAC.

CEW-POINT TLMPERATURES DEG F FROM HOURLY OBSERVATIONS

Y27855 FAPIHILD AFb hA 75-85

STATON NAME YEARS

HR, L S T JAN FEB MAR APR MAY JUN. JUL AUG SEP OCT NOV DEC ANNUAL

MEAN l. 2S. 29.1 31.4 37.7 42.8 16.2 45.0 41.2 34.9 28.8 23.d 33.00-L! b D I I. 4, 9.762 7.324 7. .05 b.581 6.844 7.277 6.699 6.874 6.999 8.77610.798 1.b8

rQTA OBSTALOoS 4 9 93 9 L, 0 907 840 868 929 9130 930 9200 930 1I'l

MEAN U. 2 I.1 28.3 30.9 37.3 42.7 46.4 45.7 41.5 34.6 28.5 22.6 33.

SD 11.6 ' 9.682 7.302 6.715 6.458 b.623 6.654 b.124 6.840 7.009 8.86410.890 11.82;TOTALOS 'iL b49 93;j 899 914 87 899 929 900 930 900 930 1088

MEAN ' .L 25.1 2b.6 32.2 39.3 44.8 48.3 47.7 42.9 35.2 28.5 22.6 34.

,-G' SD 11.699 9.492 7.Z34 6.54i 6.070 6.249 5.980 5.538 6.625 6.921 8.84110.988 12.33JTOTAl 085, V3 L49 929

9L,C 922 900 930 930 899 930 900 93U 1094

MEAN ?1. 26.8 3U.6 33.6 39.9 45.() 48.6 48.2 43.9 37.3 30.1 23.7 35.5 D Io Iiiz, 3 9.334 7.178 6.965 6.777 6.504 6.077 5.455 6.420 6.769 8.76510.776 12.001

TOTAL OBS 929 849 93 J 9LUD 924 900 930 930 899 930 900 930 1095/- -, _ _ __ ._

MEAN 124 27.; 31.1 32.9 38.9 43.7 46.9 45.9 41.8 3b.8 3D. 7 24.8 35.1,-1' SD 1.67 9.471 7.598 7. ,79 7.300 7.077 6.397 5.899 6.753 7.331 8.88210.385 11.26

TOTAL OBS f, 9 9311 97 923 906 930 930 900 93q 900 9.30 1095

MEAN 23.u ! 2-.1 30.9 31.9 37.9 42.8 4l5.3 44.2 410.2 36. 30.5 24.6 34.SD .634 9.4191 7.8'5 7.778 7.430 17321 6.916 6.26 6.b40 7.58 8.79310.481 10.97

TOTAL 085 L 049 930 9U00 917 898 93C 930 900 931 900 930 1094

MEAN 2 2. J 21.1 3G1b 32.2! 38.41 43.4 15.6 44=.2 40. 735;6 829.8 23 .8 34.o

-2 SD 11.0. -.417 7.550 7.613 7.220 7.407 7.467 6.521 6.b6 7.49 8.52111.087 11.33TOTAL 05 9? 1 849 93u 900 908 869 90' 93( 909 930 891 929 1087

ME AN - 21. I 26.5 3Ls.0 31.9 38.4 413.6 46.0 44.5 40. 35. 1 29.( 23.1 34.1-23 SD 11.1 91 9.471 7.311 7.449 6.580 7.132 7.666 6.561 6.915 7.327 8.51 11.166. 11.55

TOTAL 05 93 84 9 93U 9ol 901 839 813 93C 90R 930 90( 930! 1081

ALL MEAN 21. 126.51 29.9 321 638.5 43.6 46.7 45.7 41 5 35. 7 29. 23.51 34.HO S D 1.11.2051 -.5741 7.188 7.258 6.862 6.95 6.908 6.308 6.826 7.221 8.78 10.8 1165

TOT 0 I 74 3 67921 439 71/V9 7316 7016 7262 713 719 744q 719 7439 8717

* USAF ETAC OR. 0-9-5 (OL A)oc Ir 'I'

,,Blp

61 1Al CLIMAIOLOGY 4kANCH

; mL*AC RELATIVE HUMIDITYAT .EAT ER SERVICE/MAC

1 79i's FA ;CHILD AF WA 76-85 JANSTATfON swON NAw PERIOD .0.7.

t CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE(FROM HOURLY OBSERVATIONS)

HOURS PERCENTAGE FREQUENCY OF RELATIVE HUMIDITY GREATER THAN MEAN TOTALMONTH .. ...... RELATIVE NO OF

(L S T) 10% 20% 30% 40% 50% 1 60% 70% E0 90- HUMIDITY OBS

JA, _ j-0. 1J .0 IOU. iuO.t) O0.o 97.2 93.1 86.Q 72.5 36.8 84.4 930:

- .,0 _O 100.0 1 10ii.0 98.2 93.9 88.0 75.3 37.6 84.9 _ 930

,-Or 1,- o 13. o100.0 ioo.i, 99.8 97.8 93.4 88.1 75.7 4,1.1 85.3 930

- I 'j. 100.0 1100.0 99.4 97.4 93.5 I 87.5 72.8 36.8 84.4 9?9

1-1 ,4 1 (.0 lo0.0 99.9 98.8 96.5 9U.1 80.0 61.7 27.4 80.9 930

I:,- I 100.0 100. 99.7 98.7 96.0 90.2 80.0 162.3 26.7 80.9 930

-2.. 1 OD.0 100.0 100.0 99.5 96.0 92.8 84.7 7U.6 3. 83.01 93] -

1-231 f0.0 IOU.L IO.L 99.6 97.0 93.1 85.9 73.2 34.7 8411.0 930

tO ____

S TTAL -

TOTALS ,u .0 1 oJ. , 0. 99,5 97. 1 92.5 85.1 7f1.5 34.' 83. 7439

* USAFETAC PWD 0-87-5 (OL A)

GL.LAL CLIMATOLOGY .,5ANCH RELATIVE HUMIDITY1 Ai LTACAl.; .EAT ER SERVICE/MAC

7278, 5 FAIICHILb AFB iA _ 16-85 FE _E- STATION STATION NAME PERIOD MONT

CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE(FROM HOURLY OBSERVATIONS)

0

N H URS PERCENTAGE FREQUENCY OF RELATIVE HUMIDITY GREATER THAN MEAN TOTALMONTH S 10% 20% 30% *0% 50% 0 RELATIVE NO OF

io. 2' 0, A. 60°. 70'- I 001. 90 HUMIDITY 0&S

i 0-/ Ir-6.3 100.0 99.8 99.3 ' 98.2 95.5 86.2 1 67.1 31.4 P3.4 849

3 -0 1 0).0 1rjU.U 100.0 99.3 1 98.7 j96.7 1 89.5 72.1 33.7 84.3 849

i~ Oi . 0.o 100.0 94 9.4 98.9 97.2 91.6 7 14.9 36.0 85.1 849

_ - 1 +l,. 0+ IO'.L 99.9 99.4 97.9 I 94.0 82.0 61.5 2 7.41 81.9 849

'1,-14 1 0.0 99.9 I 99.4 97.8 93.5 82.8 65.0 4 .4 15.9 75.5 849

*1- I jlU.0 100.0 99.3 97.1 9.1.3 80.1 63.5 40.9 14.7 74.3 8149)8....8...

-2 I ,JU.L I00.0__ 99.6 t8.9 96.0 89.0 73.7 I 55.8 2.14 79.u 849

1-23 !1 '1.0 !OU.C 99.5 99.3 97.8 94.1 83.2 I 3.1 28.3 81.9 849

* - . H- __ __ t -----........-

TOTALS - - I 9 1 7LI .O 1100.0 9 99.7 98.8 96.4 91.2 97_ 6 79

SUSAFETAC ,uo 0-87-5 (OL A)

..gam

" GL i* CLIMATOLOGY :HANCHkLF IJETAC RELATIVE HUMIDITY

* Af; U <ATtiR SERiVIC/i-,AC

1218'S FAICHIL.D AF8 wA 76-85 MARSTATION STATION NAME PERIOD - O r.-


HOURS PERCENTAGE FREQUENCY OF RELATIVE HUMIDITY GREATER THAN MEAN TOTAL

MONTH .. .. RELATIVE NO OF(L S T 10 20 30% 40% 50% 60% 70% 80 90 HUMIDITY ORS

A U-0' -. 1 1 1r l,0. 100.b 99.6 97.7 *0.2 76.0 54.7 24.1 79.8 93u

L.2-< IL, I. L0'.U 100.b 99.9 198.1 92.5 82.2 62.9 29.4 R1.9 930

I L, " . 1001. 10A0.U 1l.0 97.8 1 9 3.2 82.7 b4.4 3J.2 12.3 9?9

- 1 11 0 IOU.0 S9.9 98.1 92.2 75.6 53.7 32.0 12.9 72.2 93U

14 1 1 c 96.9 45.1 27.6 16.1 6.E 61.7 930

1]-11 IJ.c 100.0 98.8 86.9 66.3 42.6 26.13 16.6 7.2 60.3 93L-- 1-- II_ _ _ _ _ _ _ _ _ _ _

-, i10J.6 in. 99.9 I 97.7 87.3 69.1 46.3 1 26.3 11.8 69.5 930

1-23 1 0 1:- r 99.6 95.8 84.8 bS. 43.2 17.7 76.2 93U

g ; --- . . . . . . . . . . ... .

TOTALS 1_ a .i]O O10. 99.7 96.9 88.4 57,o 5. 39.5 11.5 73.u 7#39

* USA7AC u 0-87-5 (05 A-

- -- -- - w mm~m w ,mmm ,,mmm mlmmm -mi m mm

3LA-,AL CLIP4AT0L0G' ,kANC~ RLAIVI iFIAC REAIEHUMIDITY

A CAT.>:ER SE.RVIC. /MAC

I218L,5 FA I CHILJ AFB wA ______ 76-F5 APR~st~tIo. STATIO. NAME EROD


HOT OURS PERCENTAGE FREQUENCY OF RELATIVE HUMIDITY GREATER THAN MEAN TOTAL

MO T R--- ------- ELATIVE NO OF1LST- 101 20 30%r A40 50'% 60'. 70'. so 90 HUMIDITY 0.S

AP p Q 1.a: 0 100... 97.4--88.e 75 ..3 50.3 26.6 -6.3 70.4. 900

A- (L- 100.0 J00.1 1JG.c 99.21 95.'. 85.4 614. G 38.8_ 10.3 75.1 899

(ht: I .A1.0 1Uo.0 t9.9 98.2 93.2 80.2 56.9 33.0] 10.1 72.8 90

- I-11 1 .1.3 110 .0 98.7 88-1 67 .2 39.14 210.8 9.1 3.1 58.3 900

*e l- I lJfI.U 99.1 9 .1 64.1 1 36.9 119.3 10.7 41.6 1.8 418.2 900

- 1 0 J._0 07. 2 83.2 55.3 J39 176[ .1 5.a 1.4 - 45.8 90ul

_4_.0 9.3 91.3 ',5. E.0 33.8 18.2 '8.9 2.6 514.2 -9Co

1-23 1 -9.7 1P. 9_ Y.3 76.7 567 T_314.6 16.14 3.9 63.14 900

I+

TOAL 1 013 . 9.5 95.1 83.7 168.1 su.e 33.17 16.1 1. 1d 79

s ~USAFETAC foe. .5Ca A

1W -875 (L A

L)L'I-AL CLIMATOLOGY ,RAC- RELATIVEH' A ETAC HUMIDITY

A .. EAT"ER SERVICE /MAC

7278,.S FAI CHILL AF2 bA 76-85 MAYSTArION - STAON NAME P.wOD


HOURS PERCENTAGE FREQUENCY OF RELATIVE HUMIDITY GREATER THAN MEAN TOTALMONTH . . .. . - - RELATIVE NO Of

(L S T) 0, 201t 30° I A% 50 60'. 70 80 90 HUMIDITY OaS

Mt" 0-I7 I,,.C 1 1-.u 10O.1; 97.9 89.9 74.1 I2. 1 29.5 7.9 7D.9 V07

- L 1X'.-G I10.0 99.9 99.5 97.3 1 87.9 67.2 42.6 13.3 76.4 914

I i .o 100.0 J9.7 - 98.2 1 89.8 7L.9 5 3

.9 28.7 .2 71.1 922

S- -- I -. I - •-1 '1 1-11. 1"0.0 96.3 Ek1 .9L 62.2 3b -1.1 22.1 11.53.6 57.1- 92

I - 1' 100 .0 D 1.2 84.6 62.L. 37.5 22 .5 i13 U 5.5 1 .3 48.1 923

I E, lr3.] a b. 5 77.9 54.9 32 . 18.8 12.4 4.1 .7 45.5 917

- -2. 1 !.9. r 9.L 90.4 F 70.3 50.3 33.b 421.5 9.3 2.4 53.3 908

1-23 1 it1.0 1 ,.U 99-1 93.3 77.1 57.2 36.1 18.4 5.1 64.4 901

_________I ____

t -- ______

TOTALS ' -J.10 9.2 93.5 .82.3 1 67.1I[ 51 .C 34.8 18.7 5.3 6C1.v 7316,

* USAFETAC ful. 0-87.5 (OL A)

I,1 A L CL IMA[FCL-06 ,A NL iiA** C RELATIVE HUMIDITYA , ,FAT.,E SERVICL 'C

7?1 R",5 FAI CHILDJ AF- .... . ..... JUNS SrON STATION NAME PERIOD .01T.


HOURS PERCENTAGE FREQUENCY OF RELATIVE HUMIDITY GREATER THAN MEAN TOTAL.

MONTH k... . RELATIVE NO Of

S I2 30, 40% 50% 60', 70, e0- 90^ HUM ',TY 06S

-U' U-C 3 'l.1 1 ,.L _ 5 . 95.1 81.1 62.9 41.8 21.3 4.3 56.5 3 4U

-J - . .92.3 1U 0.U 99.8 98.b 93.7 79.5 62.7 32.1 7.5 73.1 6 7

- 0 PC). j00. _99.9 97.0 86.1 65.1 R2.6 19.6 5.1 67.2 9001

- 11 .5.0 9.9 94.1 75.4 49.9 28.7 1'.9 bAl0 2.4 53.2 9P 0

' -1- 1'3o0 Ab. -6 L76.3 52.2'. 28.8 i 16. IL.9 5.9 1.1 44.5 9![

I I

TO ,A-LS - j .- -9 5 AlL.. - 6 .3 41.9 _ 24.4 15,4 9.5 1 3.2 3.1 41.5 . 848

, -2, .1'-10Al0 ' 917.2_ 81.c 58.2 38. 22.3 , 13.1 t2 1...... . . 5....

1-23 lICO.C '9 .8 96.7 83.8--- 65.13 4 6.7 3('.2 12.5 1.9 59 .! 8 31

TSAL5 ..... 2 8 0 . . .

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A C, TC RELATIVE HUMIDITYA I EATiiER SERVICL./MAL

12714,5 FAI CHILL, AFb .A 5-P4 JULStoN STArON Nt. "o.


HOURS PERCENTAGE FREQUENCY OF RELATIVE HUMIDITY GREATER THAN MEAN 7T%,MONT - - . ..... RELATIVE 'C DF

L S T 0 20- 30'- 40% 50%^ 60' 70 - 80 90 HUMIDITY ObS

J J-,L2 1 ,..l ',9.5 97.4 86.6 68.3 45.9 24.5 10.6 3.2 59.3 bbd

I- J;- .0 130.0 99.3 96.9 1 86.1-, 67.4 4 2.2 18.9 4.7 67.3 899

1", 1.,,.0 1jo., ,48.9 94.1 77.3 49.4 26.7 111.4 2 b.7 93U

-1 1 !:.G ',9.9 9,.Q 61 .7 32.4 15.2 8.1 3.7 . R6.8 93C

1, -14 1,UJ. C )2.4 63.L j 30.4 12.6 7.6 4.5 2.5 .5 37.J 931,

1 -11 99.7 S3.4 41.b 21.7 10.5 7.5 4.2 1.5 .3 33.3 93"'

I -2 9.9 9u.9 61.3 35. J 17.4 l0.4 __.5 S3.5 .4 38.2 9)2

1-23 1J'.C 98.9 88.1 6.: 43.,) 23.4 14.) 6.9 1.6 49.9 873

.. . . ---- . . . ..-

99 9 .6 80.9 61.6 43.4 2d.4 16.3 732 26

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.C RS PERCENTAGE FREQUENCY OF RELATIVE HUMIDITY GREATER THAN MEAN-"-- -A'

__ONT. --- ELAT:VE JC ,T 20 30 40 50 60

- 70> 80- 90 -J IDITY 8S

A. . .. . ' '9. 94. 7 79.8 59.4 42.Z 23.9 j 0.7 2.9 57.Z 929

J -LI I I.0 100.L 99.03 92.4 80.5 6i.6 31.9 15.9 5.4 65.1 " 29

C -' 0 1 -. 6 O.6 98.4 9U.4 76.1 54.2 32.8 12.4 3.9 62.7 93U,

-11 1 . 9.. 85.1 6., 36.7 17.7 9.4 47.2 93i

1. -1N iof'.O p9.4- 5 7T.b 2b.1 13.8 7.5 5.3 1.5 .3 3 . : 9 3!

I1 1 1 .. 79.6 _ .o 21.3 10.6 6.8 3.7 1.8 .6 32.. 93L

i -2 IC .C P9.o 61." 3b.5 21.7 12.7 6.u 2.6 .4 38.8 930

1-2 1 5. _. 85.3 63.3 41.2 25.5 __ 14.7 5.5 1 .3 49.3 93L

TOAL 1 .0 "4.~ 78.5 59.3 47.5 .7 16.8 __ .1 48 7438

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GI. L5AL CLIMATOLOGY BhANCH RELATIVEi A ' RTAE HUMIDITYA .EAT,,ER SERVICE/MAC

727855 FAI;,CHILG AF8 wA 75-84 SEP.... STATION STATION NANI IERIOD


HOURS PERCENTAGE FREQUENCY OF RELATIVE HUMIDITY GREATER THAN MEAN TOTALMONTH - RELATIVE NO Of

(L S T) 101 20% 30-. 40% 50% 60% 70% / 8o 90 HUMIDITY O8s

CG-02 iIr.0 10.U ;9.b' 96.3 83.9 59.3 38.1 1 22.2 8.3 F-6.5 900

0-:-c, 100.0 100. 1 100.0 98.4 1 94.3 1 79.1 l 58.1 33 . 11.7 73.4 900

, -L, 1a:;.U iso.u 10.u 96.9 93.4 j 78.2 59.1 30.4 5.9 72.b 899

-1 I_ ,.G0 I00.0U 82.3 6 31.0 I 15.5 7.6 2.9 5Q.o 899I I--- - o

.-1l4 -1J0.0 (8. 0 75.2 41.7 20.7 10.3 7.2 4? .

-1I 1 .n ',5.4 56.0 30., 15.9 10.9 I 8.3 3.9 1.1 38.1 913U

- 1? 12. 0 99.6 84.1 53.7 34.2 21.4 13.2 8.1 2.7 '7.3 900

1-23 1 I.0 99.E 97.7 85.. 57.0 37.2 23.0 13.3 5 5.4 57.7 900TO LI -

T _OTA jg. 89.1? ,1.4y 56.8 40.9 27.8 15.3 5.. s6.5 7198

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7278 .5 FAj CHIL.6 AFb ~A 7______ 5-U,4_ OCTSTATION STTIT NAEPRIOD '-0 T.


MNH HOURS PERCENTAGE FREQUENCY OF RELATIVE HUMIDITY GREATER THAN MEAN TOTAL-L S LT) io" 20% 30%. ; 40% 50*% 60-. 701. { 80 90:- HUMIDITY OBS

*uC' --_ _J-2b ~lUJAL9.9 94.J I81.b 63.3 41.4 21.5 75.9 9 3ij

10. 0.0 100 99.7 !97.*8 89.5 76.2 S4.~7 -28.4. 8L..4 93U

S-cdsS -1001).b4P~K 99.6 97.6 90.1 79.6 59.2 26.4* 61 A3 930.

-11 100.0 '1.0U.L 99. 93727.867 _______ _________

- - -t-99 4 9 . 79. 62. 4 2 . 13.1 68.A0r 930

1--- -1., -100.0 109.9 9_.2 70 .8 51.2 I34.U 21.9 13.4 5.6 54.6 9 3u

- L-17 0 .0 99.7 88.1 66.S 48.2 330 2.3 13.4 49 53.1 93U

1- -20 1 0.0 99.9 493.1 S6.7 7U.4 52.5 3-r.5 23.A5 10.2 63.7 930.

1 _ -2 3 0lO.0-l OL o 1 99.7 97.1 86.2 68.2 51.1 33.4 _ lb.0 71I.0 9 3u6

TOAS 10.0 19.9 97- 89.1 78.2 64.0 49.4. 33.4* 1. 68. 7'u

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1278-5 F A I- CHILD AFb_ WA 75-84 NOVSTAT-ON - STATION NAIA PROIOD



MONTH - RELATIVE NO Of(ML S TI i0 201- 301, 40% 50 60. 70% s0 90 HUMIDITY OBS

N,': 0-02 10,1.0 10a0.0 100. 99.4 98.1 94.8 87.1 i 75.6 38.0 84.8 90U

0.-00 1O0.1 1.. p9.4 99.0. 95.7 89.2 77.4 41.1 85.E 900

t -. 1.Lto0 'l,(U.5 IUO. u 99.4 98.7 i 96.3 90.2 79.4 4-3.7 86.3 900

-11 10.O.O 1O ., '100.5 99.3 96.8 91.7 82.4 65.14 33.6 82 ! 900

S- 1[. lOUJ.L 99.3 97.6 9°8 815.1 63.1 4Z.7 20.0 74. 91}

1'-17 1 _d. IPu.0 99.4 97.4 92.3 82.8 67.0 44.6 19.7 75.8 900____-_ _-- _ _ _ __

1 -20 150.' CIu.U 100.5 99.3 97.7 91.4 8c,,3 62.8 27.0 81. 99- __ -- 6 .- 7. 1 4 b 9

1-23 100.0 100.5 100.11 99.2 97.41 94 . 85.4 69.1 31.9 e3.3 900*+---- ---- I - --.. . ...

I-b

TOTALS 0. 3. ge 98.9 96.4 90.9 80.6 614.7 31.9 81.9 7199

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i27F1,5 FAi CHILD AF8 .A 75-84 -DECSTATION STATION NAME PERIOD - ONI -


HOURS PERCENTAGE FREQUENCY OF RELATIVE HUMIDITY GREATER THAN MEAN TOTALMONTH RELATIVE NO Of

-L T i0 20% 30% 1 40% 50% 60 70'% 80% 90, HUMIDITY OaS

0. C 0 -02 ,1c0.0 10G. 0LODjU 99.9 99. U 972 89.2 72.3 1 32.9 8Q.7 930

I - lJfl.' 100.0 10.o 0 lO0.U 90 97.0 91.0 . 74.2 34.4 85.1 93j

, ,J - 1: . .I*0 J.2_ 13.L 00 98.9 98.0 92.t Q.8 33.7 85.2 930i i I

-11 1(3".o 100.0 !10, 03. 93C_9 ________ ______________

,.2 _ 99., 98.0 96.1 89.0 69.6 28.6

1. 1t lo0 .100.U 99.9 98.9 96.6 91.3 78.5 56.6 21.9 79.9 93L

.1--17 1 .1.0 10.0.u 100.u 99.1 97.3 92.b 81.3 60.3 23.2 Fo.9 9301 ftS-2120.0 1E...0I o OO.L 99.6 98.3 4.7 86.8 I 68.1 29.A1 83.0 929

1-2 100.0 1U00. 00.0 00.J 1 98.5 95.8 87.7 1 68.7 3t., 84Q. . 93L

* _ _ ____- --

IOTALS .0 1I100.0 Jlu.0 99, 9.z .3 8.0 6'. 8.1 29.1_ 83.3 7439

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-.,TAL CiIMATOLGY ANCH RELATIVE HUMIDITY.A~fTAC

A " EAT,,FR SERVICE DIAL

127855 FA. CHILO AFb .A 75-8t ALLSTATtO.. STATION NAM FRIOD AE0.

CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE

(FROM HOURLY OBSERVATIONS)


. .. .... TH_• RELATIVE NO OF(L S T) 10 20% 30% 40% 50% 60% 70' 80 - 90 HUMIDITY OBS

j (A ALl. 0.0 130.0 100.L )9. ~9.5 85.1 70.5 34.L, __,3.5_ 71139

fl U ii0.u 99. 71 98 .6 96.4 91.2 79.3 60.0 26.2 80. 7 6792

1 o. 10.0a 99.7 96.9 88.4 7.1 5T. 39.5 17.5 73.0 7139

-p 130. 0 9.5 , 95.1 83.7 68.1 su.b 33.1 j 18.1 4.9 61.C 7199

1, .0 i Y9.2 93.5 a2.3 67.1 51.0 31.8 18.71 5.3 63.9 7316

i , ".0 1' 8.b 89.b 75.3 58.5 11.2 28.? 13.7 3.1 1 56.6 701b

j 9.9 91-.6 8J.9 bl.b 43.4 2b.4 16.3 7.3 1.8 , 9.2 7262

I,.O ,.9. 78. 59.3 52.8 28.7 16.8 6.8 2.1 48.6 7438

J I ] " 0 1 9 1 8910. 73. 56.8 j09 27.8 15.3 5.5 56.5 7198SUo].0 '-9.9 97.z 89.1 79J.2 64.0 49.4 3 3.4 16.G bS.s 7440

N o__ '_ 10.U 99.8 98.9 96.4 90.9 80.6 64.7 31.9 81.9 719V

.. C K:i.C 1 30 1J.0. 99.6 98.2 95.3 87.0 68.1 29.4 83.3 - 7139

TOTALS I .0 [ '48.9 93.t 84.9 71.3 62.5 119.7 31.7 14.8 67.C 87171

SUSAIFFTAC 0.87.5 (OL A)

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U S AIR FORCEEUVIIBO4MENTAL TECHNICAL

APFLICATIONS CENTER

PART F PRESSURE SUMMARY

Presented in t'is part are two tables giving the means, standard deviations, and total number of observationsof station pressure and sea-level pressure by month and annual for the local hourly observations correspondingto the eight 3-hourly syrioptic times GCT. The same comutations are also pr)vided at the bottom of the pagefor all hours combined. All years of data available are combined in both of these tables, although the overallperiod is limited by service as indicated below.

NOTE3: Station pressure not reported for all services until late in 1945.Statiorn pressure reported only at 6-hourly times for Air Force stations from Jan 64 - Jul 65.M}2 AB stations do not report Sea-level pressure for the period Jan 68 - Dec 70.

1. Station pressure is presented in the table in inches of mercury.

2. Sea-level pressure is presented in millibars.

Provided below is a scale to convert station pressure values in inches of mercury or millibars to pressure-altitude in l0O0)'s of feet. This scale is an enlarged model of the pressure-altitude scale in the SmithsonianMeteorological Tables.

P R E S S U R E A L T I T U 0 E (1 00 O'S F T)

II 10 9 8 " 6 5 4 3 2 I 0 1

20(1K t) ?I 22 23 24 25 26 21 28 29 30 3I(I.HC)B AR OME T R I C P R E S S URE

(NS) T00 150 800 850 900 950 1000 1050 NI)

II I0 9 & 1 6 5 3 2 1 0 1

P R E S S U R E A L T I T U D E (I 0 00 S FT)

F - 1

.lof+AL CLIMATOLOGY ,RANCHi'.AFLTAC MEANS AND STANDARD DEVIATIONS

A . .EAThL R SERVICLtMA(L

SIAIION PRESSURE IN INCHES HG FROM HOURLY ObSERVATIONS

?27 --5 FAI CHIL: AlE %B 75-85

'A I' STATION NAME YEAR5

IAN' T1

JA FB MAR APR MAY JUN JUL AU SEP OCT NOV DEC ANNUALMEA 17.49 1'V1.4 I 7:3442 7.3732l.37027.3782_7.4OO27.38427.424 7.456 7.447127.437 1/. 4

0' ' ' 1 .2,4 .231 .199 .173 .14 ', .114 .193 .10 * 141 1 51 .2341 .24 .188

..OAL oBS 310 2t3 3iu 3 u ___,_ 3001 310 310 3o 310 300 31o' 307

MEAN j~?i.S0Ui'.213 143437.,379 7.371 7.388 7.4127.391 7.43021.4267.41227.439! 27.41S D .2', .232 .z J2 .176 .142 .115 .093 310 . .4 *181 .241 .24b .194

TOTAL OBS .il * 3., 2 31. 30 3 31 300 31 31 3 310__ 300 310i 3651

MEAN 2?1 . *1.415 67.3552 7 74 .399 7. .1127.43927.418 7.4512T.47127.446T27.442 27.42s D 2 .23S .2' 0 .17b .145 .118 .094 .103 .145 .18 .246 .238'[ .191

TOTAL O 3 ! 1 2 3__ 3 31.)_ 31U 31J 300 310 310 300 310 301A 31O' 3653

+ t+-

MEAN s .2 27 .432 7.37027.41027.40127.41527.44427.426 7. .61J?7.48 2,27.44

SO .24 .237 .- 7 .17b .144 .116 .095 .102 . 14 .189 .24'r .41 . 19TOTALOT, 11 2. 3 31, 3u0, 310 300 310 310 30q 31 30_ 310 365

MEAN rt.Q? 741 .5 7.38727.38327.490 27.42627.40527.438127.46 27.44627.444# 27-.42I SD :I .24 .238 .203 .111 .142 .112 .094 .099 .143 .18f .244 .238 .18

'TOTAL 085 31 2 *3 3 S1.. 36U 309 300 31L 310 3001 31( 31 31 365

MEAN 2 1.4927 7.40127.334 7.3 7.36177.37327.39427.37127.4l227.44?.44127.4942 27.401

s O .2 .235 o19d .164 .139 .112 .093 .098 14C .18 .23 .240 .18TOTAL 0854 31 2,3 31.. 30 ,399 299 310 310 3001d 31 C 300__ 310 _365

MEAN- 1.4"427.40527.33627.35?~27.35327.36327.38227.36 7.41127.8#4 27.44427.444: 27.40SD .21 .231 .15 b3 .137 .110 .092 .09 .14 .18 .23 .24b .18

TOTAL OBSJ [1 2-93_ __S_ _____ _____ 39__ 930_ 3_ 1 9_3 5

D * 21 .23U .195 16S .14U .109 .093 .10c .1142 .182 .23 .250 1 .18TOTAL OSS j 31 3 _1J 0-09-5 3,9, 299 310_310 _30g__1q_ 30_3_1 365

MEAN 127.4Q9127.413i7.* 27.3827.37627.38827.41227.3922r.4i31l27.4$6g27.44 27.44511 27.461

HSD so 24 1 .2 3 .2001 ..111 .142 .11 1 9~ .1 4 i .19 .2., .244' .8TOA 085 24s - 22641 2 4811 240O 24 7t, 239 248 48 2140 2481 240 A4~. 2921

,c,,USAF ETAC '0"', 0-89-5 (OL A)

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UL 4At CLIMATOLOuy -. gANCH, SA'LTAC MEANS AND STANDARD DEVIATIONSA 1 -FAT R SfkV1(C /iAC

,LA LEVEL PRESSURE IN MBS FROM HOURLY OBSERVATIONS

218-5 F Ai CHIL, AFB wA 75-85

STA TLQ ) STATIO N N AM E YEARS

HRS ST JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL

MEAN 1 1. l,, :.11014.61015.0101.21013.81014.01013.41015.710 {7.91018.91019.2 1016.

I SD 9.9 1 9.Jlb 7.525 6.568 5.363 4.362 3.563 3.866 5.442 7.013 9.1211 9.80-5 7.58TOTAL OS 311 2-r33 310 3-0 31U 300 31U 310 300 313 30P 310 365 3

MEAN 1121. ,1017.91014.61015.31014.51014.21014.51013.71015.91UI8.01018.IUI9.4 1016.SD U .9?bt 9.tj12 7.656 6.693 5.446 4.431 3.605 3.912 5.484 7.148 9.367 9.788 7.62 1

ToTAt oBs .l0 2 3 31_ 3:O__ 319 300 __ 3_10 31 300 310 30 310 365

MEAN IU22.CIU1 ,.21015.31016.21015.31015.11015.51014.81016.9 1018.91019.1 1019.6 1017.

5D 1-043 i.lb4 7.806 6.775 5.517 ...464 3.564 3.891 5.5381 7.234~ 9.47 9.7471 7.59~TOTAL OBS &1L 2 3 31.- 3JU 31i 300 310 310 30LI 31 0 29 3 V9 _ 3b5

MEAN TI2 .10 18..81015.71016.4I C15.410 15.21015.61015. 1017.I1019.3. 1019. lZ0.5 1U17.SD -.91o 9.2(> 7.684 6.633 b.472 4.406 3.587 3.838 5.531 7.189 9.594 9.646 7.63

TOTALOBS 1 2.3 31J 3C0 31i 300 310 310 300 310 30P 310 365

1MEAN L21. IO1.01014.9101S.51014.71014.blU 4.91014 l . lb 1018.21011 . 1019.6 1016.I So V.726 9.2-4 7.691 6.L171 5.407 4.273 3.578 3.77 5.412 7.052 9.461 9.524 7.50

TOTAL O S6 3 1 2, 3 311 3uj 3nl9 30 0 310 31 0 300 31U 300 310 365

MEAN It 1021. I 17.51014.21014.71013.91 2 13.61013.[1013.01015. 1017.61018. IU19.5 1016.I SD " .41.. 9.-99 7.502 6.242 5.311 4.311 3.573 3.727 5.378 6.925 9.257 9.538 1 7.5l]

oS s 3 283 31l 3LO0 309 Z99 309 310 299 31c 30 [ 310] 36 4

MEAN 1021. 1017.81014.51014.51,.13.b1(113.21013.31012.71015.41017.91019. 1 19 -.71 10 6IbS 9.260 b.998 7.396 6.192 5.245 4.210 3.529 3.714 5.387 6.92! 9.21P 9.8231 7.55

TOTALOBS 31 21.3 3 2L 3u0 309 29 9 309, 310 300 312 30 310 365MEAN 1021. .1017.81014.8101 24.911 ]l.4. l 1 13 81 13 ,91013.31015. 101]8.01019. 1019.9 1016. q2 SD 9.4,02 d.977 7.435 6.2b6 5.335 4.192 3.602 3.813 5.424 6.958 9.1S88 9.965' 1

7.542

TOTAL o5 31 2 13 3lu 310 3(9 2 310 31 30IIo 31 29 310, 365

ALI MEAN 1021..,1i18.01014.81015.31014.51 01.21014.41013.81016.1018. 1 1019. 1019.7 1016.

HOURS Y so .6 4 9.085 7.616 6.508 5.413 4.378 3.654 3.890 5.48 7.06 9.32 9.7 3: 7.58_O TOTAL OBSi 247' 22641 248U 24LO 247, 2397 2478 2480 2399 218 39.I 4 9 7 9817

USAF ETAC 'o"" 0-09-5 (OL A)

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DATE

FILMED

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DTI

DATE

FILMED

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-l7lllllllll UNCLASSIFIED SURFACE TECHNICAL APPLICATIONS … · 2014. 9. 27. · ad-ai59 700 fairchild afi washington revised umifi s ofiary surface weather obser..iui air force environental