Embed Size (px)
Citation preview
Earthquakes in Missouri
Mid-America Contingency Planning ForumFall SymposiumSeptember 17, 2015Ballwin, MO
Missouri’s Earthquake Program
• Outreach and Education (Preparedness)– Earthquake Awareness Month during February– Great Central U.S. ShakeOut during October
• Catastrophic Planning Efforts• MO Seismic Safety Commission• Structural Assessment & Visual Evaluation
(SAVE) Coalition• Support for Earthquake Exercises
50+ Years Of Events
DATE Mw LOCATION ZONE
NOV 7, 1958 4.0 Southern IL WVSZ
MAR 3, 1963 4.4 Near Poplar Bluff, MO NMSZ
OCT 20,1965 4.5 Centerville, MO C US Random
NOV 9, 1968 5.1 Southern IL WVSZ
MAR 25,1976 4.5 Marked Tree, AR NMSZ
JUN 10, 1987 4.8 Southeastern IL WVSZ
JUN 18, 2002 4.6 Evansville, IN WVSZ
APR 18, 2008 5.2 Mount Carmel, IL WVSZ
Source: Dr. Greg Hempen, MO Seismic Safety Commission
St. Louis Area Earthquakes
Since 1811 at least a dozen earthquakes have caused minor damage in St. Louis.
(Public domain information: Saint Louis University Earthquake Center,St. Louis, Mo., 1999,http://www.eas.slu.edu/Earthquake_Center/EQInfo/Flyers/central_u.html)
Mt. Carmel, IL. April 2008
• Felt in more than 20 states and across Missouri
Photos: St. Louis University Earthquake Center
200 km200 km
400 km400 km
M5.4 Alum Rock, CA Oct 30, 2007M5.4 Alum Rock, CA Oct 30, 2007 M5.2 Mt. Carmel, IL, April 18, 2008M5.2 Mt. Carmel, IL, April 18, 2008
Figure courtesy of Dave Wald, USGS
Earthquake ground motions stay Stronger over greater distances in the Eastern US
Future Danger in the Central U.S.?
Planning for Earthquakes
10
New Madrid Seismic Zone Catastrophic Planning:
The Response Challenges
5 Million
Rural Pop.
160 – 200 Cities
St. Louis 348 K2 mil metro
Memphis 655K1.3 mil metro
Approximately 7 million people at high risk
MO
IL IN
KY
TN
ALMS
AR
• No notice event that is not commonly recognized
• Large area of impact - 126,575 Sq. Miles
• Multiple jurisdictions with multiple governors
• Significant infrastructure impacts
• Response challenges multiple earthquakes/ aftershocks
• Poor situational awareness
• Security demands
• Mass care/shelter needs
• Major housing, evacuation, & relocation needs
• Urban & Isolated areas
Planning: New Madrid Seismic Zone Concerns
• Earthquakes are no-notice events• Midwest geology allows quakes to be felt over a much wider
area than those in places like California• Softer soils commonly located in river valleys amplify the
earthquake effects• Those same soils can also liquefy for a short time• Many older buildings are made of unreinforced masonry and
are vulnerable to shaking• The public generally does not prepare for “low probability, high-
consequence events”• The effects of such an earthquake or earthquakes could be far
beyond other disasters we have faced in Missouri• Missouri will not be the only state affected by these quakes and
so will not be able to assist neighboring states, while competing with them for outside resources
State Response Plan
Missouri SAVE Coalition
Engineers ArchitectsBuilding InspectorsOther Qualified Individuals Certified Under SAVE
All Volunteer Professionals
What SAVE Does• Mostly Rapid Visual Inspections per Applied Technology
Council-20 and ATC-45 • Exterior Only, Structural Life Safety• Post Inspection Placards:
• Joplin EF-5 Deployment Data used by FEMA, Missouri National Guard, NIST, and ASCE Researchers
How SAVEActivates
EVENT OCCURS
Governor Declares Emergency
Local Government Requests Building Inspection Help from SEMA
S.A.V.E. Teams Begin Deployment
Joplin EF-5 Event Time LineMay 22nd 5:41 pm Tornado StrikesMay 22nd 5:42 pm Search and Rescue
Efforts BeginMay 23rd 8:10 am S.A.V.E. Regional
CoordinatorsBegin Phone Tree Call
DownMay 24th 10:39 pm City of Joplin Requests
Building
Inspection Help from SEMA
May 25th 10:19 am S.A.V.E. SW Regional Coordinator Deploys
to JoplinMay 26-28 S.A.V.E. Inspection Team
Deployment
SAVE Members in Joplin - 2011
Photo Credit: Jeff Hower – S.A.V.E.
Example Unsafe Building
Photo Credit: Ben Ross – S.A.V.E.
ResultsMore than 7,700 Structures Inspected
36% Unsafe
6% Restricted Use
58% Did Not Present Life Safety Problems
Branson EF-2 Deployment March 3, 2012
.
Exercising Our Plans
• October 15, 2015 – Great Central U.S. ShakeOut earthquake drill
• October 16-17, 2015 – SAVE Coalition exercise at Jefferson Barracks
• August 2016 – National-Level Mass Care earthquake exercise in Missouri
Expanded area of the House Spring and Maxville 1:24000 quadrangle map
Shows areas ofLiquefactionCollapse Landslide potential
St. Louis Area Earthquake Hazard Mapping Project
Thank You!
• Steve Besemer, SNS/Medical Countermeasures Planner• Office: (573) 526-9377• E-Mail: [email protected]
• Jeff Briggs, Earthquake Program Manager• Office: (573) 526-9232• E-Mail: [email protected]
Missouri State Emergency Management AgencyP. O. Box 116, 2302 Militia DriveJefferson City, MO 65102
