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Seattle OEM

on 13 May 2016

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Transcript of Copy of PREPARING FOR THE BIG ONE

Get AlertSeattle messages
Sign up online at alert.seattle.gov

Tune in to local emergency radio stations
AM 710, AM 1000, FM 97.3 and FM 9.7

Tune into local television

Follow City departments on social media
(Twitter, Facebook, NextDoor, Reddit)
@CityofSeattle @SeattlePD @SeattleFire @SeattleDOT @SeattleSPU @SEAcitylight

Go to your nearest emergency hub

Shut off water at the main house valve
Typically located right outside your house or inside
This saves the water in your hot water heater
and toilet from possible contamination
Turn off power to the water heater - attach a hose

Shut off natural gas ONLY if necessary
Only shut it off if you smell natural gas, hear
a hissing sound, or dial is spinning rapidly

Shut off electricity ONLY if natural gas meter is damaged
This will help prevent a fire

Check to see if your home sustained structural damage
Rope off damaged areas so others know
Start by planning with 1-2
people who live near you

Check on one another after a disaster
(Who has children, pets, lives alone, special needs?)

Helping may also include sharing supplies, a mutual agreement of checking on each other's home if the disaster strikes when your away

Find out your neighbor's unique skills
(i.e. CPR cert, First Aid, Mechanical, etc.)

It will make getting through a
disaster easier until help arrives
You don't know where you'll be when the disaster strikes. Have smaller kits in your car and at work.
Kristin Tinsley
The things you rely on daily will be significantly disrupted
Earthquakes are the top hazard
It's not IF it happens, it's WHEN.
Presented By:
Seattle's Hazards
Let's Be Frank
2. Snow and Ice
3. Infrastructure/Cyber
4. Windstorms
5. Power Outages
6. Terrorism
7. Disease Outbreaks
8. Flooding
9. Excessive Heat
10. Fires
11. Tsunamis/Seiches
12. Landslides
13. Transportation Accidents
14. Water Shortages
15. Social Unrest
16. HAZMAT Incidents
17. Volcano
18. Active Shooter

Stores may quickly run out of supplies
Everything you need to know about Earthquakes
Today's Presentation:
Earthquake will destroy Seattle!
No other hazard has the combination of likelihood and potential destructiveness
What is an earthquake?
What we already know...
Earthquakes, Nothing New for Seattle
Seattle is vulnerable to major earthquakes

A major quake is highly probable in 50 years

Returning to normal will take a long time

People will be on their own

Services will be unavailable

Citywide plans are in place

Earthquakes in Seattle
The Earth is like a moving puzzle
What causes earthquakes?
Are the edge of the tectonic plates
Plate boundaries
Plate boundaries are made up of many faults

Most earthquakes around
the world occur on these faults

Since the edges of the plates are
rough, they get stuck while the
rest of the plate keeps moving

Finally, when the plate has moved far
enough, the edges unstick on one of
the faults and there is an earthquake
Shallow quakes = X on diagram
1. Crustal or Shallow Quakes
Types of Alerts
Sign up for emergency alerts
First responders may not be able to help you for some time
Hospitals may be overwhelmed
Phones, cable TV, and internet may not work
Gas stations and ATM machines may not work
Utilities may be damaged (electricity, water, sewer)
People may not be able to get anywhere easily (roads, bridges damaged; transit will stop)
a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.
The skin is not all one piece - it is made up of many pieces, like a puzzle
Earth has four major layers: inner core, outer core, mantle and crust.
The crust and top of the mantle make up a thin skin on surface of our planet
The puzzle pieces (tectonic plates) keep slowly moving, sliding past each other and bumping into one another
The Seattle area experiences three earthquake types with three very different consequences
1. Crustal or
Shallow Quakes

2. Intraplate or
Deep Quakes

3. Subduction Zone or
Megathrust Quakes
Did you know?
Seattle Fault Quake
Secondary Impacts of Seattle Fault Quake
These faults occur in the North American Plate at 0-30 km near the crust's surface

Intense shaking occurs near epicenter, then diminishes quickly

Shallow quakes are expected on the
Seattle Fault

Extends east-west through the middle of the City

Could be as large as magnitude 7.5, but
less than 7.0M is more probable

Most recent was 1,100 years ago

Has been active 3-4 times in the past 3,000 years
An earthquake on the Seattle Fault poses the greatest risk to Seattle
2013 research finds that Seattle is at risk of thousands of landslides following a strong (M7) Seattle Fault quake.

A large Seattle fault quake could trigger a 16ft. tsunami that would strike the shoreline within seconds and flood it within 5 minutes.

M7 Seattle fault quake could cause dozens
of fires. Suppressing fires would be more difficult because
of reduced water pressure.

Structural failure and fires would cause multiple hazardous materials releases, from minor to major incidents.

2. Intraplate or Deep Quakes
These faults occur at depths of 30-70 km in oceanic crust as it dives under continental crust

Because of depth, buildings located directly above epicenter are far enough away that ground motions are attenuated

The 2001 Nisqually Earthquake was a magnitude 6.8
deep quake

Deep quakes = O on diagram
Deep Quakes
Most common large earthquakes that occur in Puget Sound Region

Quakes larger than 6.0M occurred in 1909, 1939, 1949, 1965 and 2001

Combined property damage for quakes in 1949 and 1965 amounted to $400 million; 2001 amounted to $36 million to City property
3. Subduction Zone or Megathrust Quakes
These faults occur on the interface between the North American
plate and the San Juan de Fuca plate, a small plate extending from Northern CA to BC

Largest types of quakes in the world

Quake on the Cascadia Subduction Zone is commonly referred to as
'The Really Big One'

2011 Japan Earthquake and Tsunami was a subduction zone quake

Trivia Question
How long did the Nisqually
Quake shake for?
The Sky is Falling!
The Really Big One
Subduction zone quakes are the greatest risk to the region as a whole

Could reach a magnitude 9.0+ and affect an area from Canada to Northern California

Shaking in Seattle would be violent and prolonged, but not as intense as Seattle Fault quake

Subduction zone quakes occur in this area about every 500 years
Ground Failure
Other Key Facts
About 15% of Seattle's total area is soil that is prone to ground failure in earthquakes. The Duwamish Valley, Interbay and Rainier Valley are vulnerable to ground failure and shaking because of the liquefiable soils in these areas.

Seattle has an estimated 819 unreinforced masonry buildings that perform poorly in quakes. These older brick buildings tend to be concentrated in areas expected to experience the strongest ground motion during quakes.

Seattle is heavily dependent on bridges. Damage to them would impair emergency services and the economy. Despite retrofits, many will not be usable after a strong quake.

Combined property damage for quakes in 1949 and 1965 amounted to $400 million. The 2001 Nisqually Quake amounted to $36 million to City property.

What to do before an earthquake hits
1. Make a Plan

2. Build a Kit

3. Help Each Other
Prepare now before it
happens, not during

Plan to be on your
own for a minimum
of 7-10 days

History has shown...
preparing works!

Follow three simple
steps to be ready

Develop a Disaster Plan
Always plan for:
If you lose power
If you have to evacuate your home
If you have to shelter-in-place
If you are unable to travel
If you are unable to communicate
If your property is damaged
Develop a disaster plan

Develop a
communications plan

Know your
neighborhood's plan

Retrofit your home

Sign-up for emergency alerts

Know how to turn off utilities

Plan for people,
pets and property
Communications Plan
Retrofit Your Home
Include the following in your
communications plan:

Out of Area Contact

Emergency Contacts

Meeting location

Ask yourself these questions:
What happens if we are separated?
Where can we meet?
How will we contact each other?
Who are our emergency contacts?
What if I have to report to work?
What if I'm at work and can't get home?
Who will watch the kids?
What about the school?
What about our pets?
Know your Neighborhood's Plan
Emergency Hubs

SNAP Groups

Disaster Skills Workshop
Coming soon...
I. Seattle Hazards

II. Earthquake Risk

III. Make a Plan

IV. Build a Kit

V. Help Each other

VI. Q&A Session
Secure the following:
Large furniture
Wall hangings
Kitchen cabinets and contents
Water heater
Hazardous materials

Go on a 30 min. hazard hunt

Attend a free home retrofit class
Was your home built before 1980?

Retrofit your home
See list of contractors on OEM's webpage
When emergencies happen, be the first to know. Stay informed with AlertSeattle to receive real-time, official notifications from the City of Seattle. This is a free service.
Emergency Alerts

Community Notifications
Severe weather
Special events
Utility disruptions
Major traffic
Emergency Preparedness
Test Messages

Basic Kit Supplies
Prepare to be on your own for 7-10 days
Think about what you use on a daily basis, and include those items in your kit.

Food and water are the most important.
Include your special needs
Emergency responders won't be able to help you. 911 dispatch will be overwhelmed. You're on your own.
Vehicle Kit Supplies
Take it to the next level: start up or join an existing SNAP group or Community Emergency Hub
Connect with your neighbors
What to do during an earthquake
Check on yourself and family
Don't run during the shaking

Drop, Cover and Hold
under a desk or table

If there's no table, find the nearest safe place beside
an inside wall or lower
than furnishings

If outside and in an open area, sit down and cover your head with your arms

If in the "danger zone"
next to a building, try to
get back into the building
to find shelter
Quake Advice
Myth buster:
Doorways are not a safe place to be
1. Check yourself and family for injuries

2. Check on your home

3. Check on others

4. Find out more information

Check yourself for injuries

Put on sturdy shoes

Check family members for injuries

Do basic first aid if needed

Your safety comes first
Check on your home
Check on others
Find out more information
Check on utilities and structure of your home
Go to your neighborhood
meeting place

Focus on three priorities:
Control utilities and fire
Check on others
Care for injuries

Find out what is happening in the region
What to do after an earthquake
You'll be happy you prepared ahead of time when 'the big one' hits
Q&A Session
Ask us anything you want to know
Thank you for attending
Kristin Tinsley & Matt Auflick
Seattle Office of
Emergency Management

Full transcript