Weekly Weather BriefingWeekly Weather Briefing12/06/201212/06/2012

((Decision Support Services)Decision Support Services)

www.srh.noaa.gov/shv/briefingwww.srh.noaa.gov/shv/briefing

Matthew DuplantisMatthew DuplantisMeteorologistMeteorologist

National Weather Service Shreveport, LouisianaNational Weather Service Shreveport, Louisiana

Overview Short Term: Today into Friday… Short Term: Today into Friday…

Warm and humid for the next few days…Warm and humid for the next few days… Patchy fog and drizzle in the mornings…Patchy fog and drizzle in the mornings…

Weekend: Weekend: Saturday...a weak cold front will approach the area bringing a Saturday...a weak cold front will approach the area bringing a

weak chance for rain…but, then will wash out around a Tyler to weak chance for rain…but, then will wash out around a Tyler to Shreveport to El Dorado line.Shreveport to El Dorado line.

Sunday…showers and thunderstorms will begin to develop out Sunday…showers and thunderstorms will begin to develop out ahead of the next system.ahead of the next system.

By the evening hours the upper level trough will begin to push By the evening hours the upper level trough will begin to push a strong cold front through our area. Widespread severe a strong cold front through our area. Widespread severe weather is not anticipated with this event…but, isolated severe weather is not anticipated with this event…but, isolated severe weather can not be ruled out.weather can not be ruled out.

Locally heavy rainfall could be possible in some areas along Locally heavy rainfall could be possible in some areas along and east of a line from Lufkin…to Bossier City…to El Dorado. and east of a line from Lufkin…to Bossier City…to El Dorado.

Extended:Extended: Very cold temperatures will be left in the wake of the cold front Very cold temperatures will be left in the wake of the cold front

on Monday. The entire four state region will see below freezing on Monday. The entire four state region will see below freezing temperatures Monday night…and high temperatures on temperatures Monday night…and high temperatures on Monday and Tuesday in the low to mid 50s.Monday and Tuesday in the low to mid 50s.

National Weather Service Shreveport, LouisianaNational Weather Service Shreveport, Louisiana

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National Weather Map National Weather Map

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Today & FridayToday & FridaySurface low pressure to our west

will allow for moistsoutherly flow to continue.

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Moisture

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SaturdaySaturdayWeak cold front will approach the four

state region early Saturday morning andwashout by mid-day.

HM

oisture

Sunday MorningSunday MorningSurface low pressure system beginsto form over Oklahoma out ahead of

a strong cold front.

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Sunday EveningSunday EveningStrong cold front begins to push through.

Showers and thunderstorms will be ongoingand/or developing in this timeframe.

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Sunday Night/Monday Sunday Night/Monday MorningMorningHeavy rain begins to form along cold front

during the overnight hours.H

MondayMondayMonday will be cool and blustery as the strong

cold front vacates the area.H

Rainfall for Thursday - MondayRainfall for Thursday - Monday

1.00

0.25

0.01 0.50

Tuesday MorningTuesday MorningFreezing line for Tuesday morning…

all of area should experience freezingtemperatures!

30

30

28

2827

27

Tuesday & WednesdayTuesday & WednesdaySurface high pressure builds into the

area and reinforces cold air.

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Wednesday MorningWednesday MorningFreezing line for Wednesday morning…

cold air will still be in place.

32

32

30

34

Drought Monitor Drought Monitor

Drought is creeping back into areasof east Texas and northwest Louisiana.

Temperature Outlook 6 – 10 Temperature Outlook 6 – 10 Days Days

+ 33 %

+ 40 %

Precipitation Outlook 6 – 10 Precipitation Outlook 6 – 10 Days Days

+33%

+40%+50%

-33%

Temperature Outlook 8 – 14 Temperature Outlook 8 – 14 Days Days

+ 40 %

+ 40 %

Precipitation Outlook 8 – 14 Precipitation Outlook 8 – 14 Days Days

+33%+40%

-33%

-40%

NEXT CONFERENCE CALL:

www.srh.noaa.gov/shv/briefing

Weekly Webinar Weekly Webinar – –

Thursday, December 13th @ 10 AMThursday, December 13th @ 10 AM

National Weather Service Shreveport, LouisianaNational Weather Service Shreveport, Louisiana