1. Emergency Preparedness - Earthquakes -
Are We Prepared for a Major Disaster?
What is Your Role?

2. What Can We Do about a Major Earthquake Disaster?
- Since We Can’t Reliably Predict them
Plan and Prepare for them
Get Educated about the about what to expect and how to Prepare
Know your role in Helping Thurston County and Resource Stewardship Get Ready
Help your community by educating your neighbors

3. What is Considered a Major Earthquake
Magnitude 9 Cascadia Subduction Zone (20 times in past 10,000 years) – Last one Jan 29, 1700
Produce Very Strong to Violent Shaking for Minutes (Not Seconds)
Disable parts of the Northwest for Years
Large Aftershocks up to 7.0 that can occur for Years
Local Faults also capable of causing severe damage (Seattle and Tacoma Faults)

4. Cross section of CSZ
Image Source: Oregon Department of Geology and Mineral Industries

5. Local Crustal Faults Seattle and Tacoma Faults are examples
Capable of very damaging shaking
Not as widespread as Cascadia
More damaging than Cascadia locally

6. What Happens During the Event?
Shaking can last for up to six minutes
Very Strong to Violent shaking that Destroys or severely damages infrastructure
Ground can liquefy and structures collapse
Rapid succession of large aftershocks across the region
Thousands of Landslides (New Zealand Last week)

7. Secondary Effects of Strong Shaking
Landslides
Dam Failures
Liquefaction of soils
Secondary fault ruptures
Even increased volcanic activity
And the worst effect of all ……

8. A Massive Tsunami is Born
Half of the Tsunami hits the Washington, Oregon and California Coast within 30 minutes
Evacuations to high ground very difficult because roads will be wiped out by the earthquake
Other half of Tsunami Races outward across the Pacific reaching Hawaii in six hours and Asia in 12 hours
It enters the Puget Sound and causes havoc with tides for hours and floods low lying areas with sea water
Good news - Puget Sound is spared direct impact of the Tsunami

9. Japan - March 2011 Tsunami

10. Massive Regional Earthquake Effects on Services/Utilities
Electricity loss for weeks or months in some areas
Loss of most communications for an extended period of time
Most Roads and Rail Lines Severely damaged (no food or supplies by road or rail)
Thousands injured or Killed (Japan, Indonesia, Haiti)
Japan ,000 killed : Indonesia 250,000 killed: Haiti 275,000 killed

11. What is Your Role in A Disaster?
We need skilled people to Help Us
Prepare
Mitigate
Emergency Response
Recover

12. Prepare For A Major Disaster
Get educated about what to expect – lots of info online
Get supplies – 2 weeks or more food and water
Where will you get water if there is no electricity?
Water purification kit or Clorox bleach
Disaster Kit for simple first aid
Keep up to date on vaccinations (especially tetanus)
Think about a Major Earthquake – Don’t Overthink about it… It will come but maybe not in your lifetime??

13. Mitigate for it Think Disaster! not terrifying inconvenience
Secure your home and workspace – what can you secure, move or avoid
Plan- What will you and your family do before, during, and after a major disaster
If it happens at home
If it happens at work
What is your kids’ school disaster plans?
Ham Radio may be only working radio communications – Get one and learn how to use it

14. Emergency Response Decision Tree – What to do first
Check your family situation – are they safe
Contact your Emergency Response Group Leader
Go to your pre determined muster point
Assemble teams and assess the disaster
Prepare to deploy and use your training
Communicate between teams and other Agencies
Perform your pre-determined tasks

15. Recovery Efforts 12 – 72 hours: Inspection and Assessment Teams
Building and infrastructure damage & brace for aftershocks
Casualties and Rescue if necessary
Assist other Emergency Teams when primary tasks complete
48 hours – 2 weeks: Continue Documentation and Recovery Activities
Aftershocks continue
Re- inspect tagged structures
Reconstruction
Long Term Recovery will take years

16. ARE WE READY?
Anchorage M

17. Structure Collapse

18. Major Infrastructure Damage

19. Liquefaction