Cascadia Earthquake Preparedness at Cedar Ridge

Cedar Ridge Estates · Community preparedness

A practical guide to protecting your household, helping your neighbors, and preparing for life without everyday services after a major earthquake.

What Cascadia Rising tells us

Cascadia is the offshore plate boundary where the Juan de Fuca Plate moves beneath North America. A large rupture can affect a broad region at once. Western Washington also faces deep earthquakes and earthquakes on local crustal faults, so preparedness should not depend on one particular event. USGS explains the three regional earthquake sources.

Cascadia Rising was an emergency exercise series held in 2016 and again in 2022. Government agencies, emergency managers, and partners practiced responding to a severe earthquake and tsunami. The 2022 scenario used a magnitude 9.0 rupture along the Cascadia fault, with an estimated four to six minutes of shaking and significant secondary hazards. That duration describes an exercise scenario, not a stopwatch prediction for Cedar Ridge. Read the 2022 after-action report.

The central lesson is that help may have to cross a damaged region to reach a damaged neighborhood. The 2016 after-action report identified the possibility that isolated communities could wait several weeks for assistance. Responders, their families, facilities, vehicles, and communications would be affected too.

An exercise tests plans against demanding assumptions. It does not forecast the date, exact damage, or restoration schedule of the next earthquake. USGS says earthquakes cannot currently be predicted with a specific time, location, and magnitude. Preparing now makes sense without treating any calendar date as a deadline imposed by geology.

Watch a short introduction to our earthquake setting

Washington Emergency Management Division’s 93-second introduction explains the regional earthquake setting. Watch Pacific Northwest is Earthquake Country on YouTube. English captions are available. Read the official written guidance.

What matters on our wooded ridge

For homes around Estate Drive and the connection toward State Route 534, think beyond the building itself. The practical concerns include falling household contents, damaged chimneys and decks, trees or utility lines across access routes, slope movement, and interrupted services. A short drive to town in ordinary conditions does not establish how quickly a repair crew or ambulance could arrive after a regional disaster.

Shaking can trigger landslides and damage road edges, fills, and retaining structures. Ground conditions can also change shaking intensity. These are reasons to examine our surroundings, not a finding that any particular Cedar Ridge lot will fail. The Washington Geological Survey’s Geologic Information Portal is a useful screening resource. Property-specific questions belong with a qualified geotechnical professional or structural engineer. For more on slopes, drainage, and warning signs, read Living on a Wooded Ridge: Landslide and Earthquake Readiness at Cedar Ridge.

Keep tsunami risk in its geographic context

Cedar Ridge’s inland ridge setting calls for different decisions than a visit to a low-lying saltwater shoreline. Do not apply an outer-coast evacuation time or wave height to a Cedar Ridge home. Conversely, do not assume that every destination in Skagit County is outside tsunami danger. The county publishes tsunami evacuation information for coastal communities, including Anacortes and the Samish, Bow, and Edison area.

Check official inundation and evacuation maps for places you live, work, and visit. At a tsunami-prone shoreline, strong or long shaking is a natural warning: protect yourself during shaking, then move promptly to high ground or inland along the established evacuation route without waiting for a phone alert. Lake Sixteen should not be treated as an emergency gathering destination simply because it is familiar. Earthquakes can cause lake sloshing and landslide-generated waves; this guide does not establish a local lake-wave inundation area. DNR explains earthquake-related ground and water hazards.

Protect yourself when shaking starts

Drop, Cover, and Hold On. Drop to your hands and knees if you can, cover your head and neck, and get under a sturdy table or desk nearby. Hold on until shaking stops. If there is no nearby shelter, stay low and protect your head and neck away from windows and objects that may fall. Do not run outside during shaking. Skagit County provides the basic protective steps.

• In bed: Stay there and protect your head and neck with a pillow, unless an immediate hazard makes that location unsafe.
• Using a wheelchair or walker: If you cannot safely drop, sit or remain seated so you are not knocked down. Lock wheels when possible and protect your head and neck. Practice a version that fits your abilities and equipment.
• Already outdoors: If safe, move away from buildings, trees, poles, and power lines, then stay low.
• Driving: Pull over safely away from bridges, overpasses, trees, and wires. Set the parking brake and remain in the vehicle until shaking ends.

These adaptations are described in CDC’s earthquake safety guidance. Rehearse them where you actually spend time, including bedrooms, the kitchen, and your workspace.

Aftershocks can damage already weakened structures. They may continue long after the first day, and a later shock can still be large. Repeat your protective action whenever shaking returns. USGS aftershock guidance explains why a quiet period does not mean the sequence has ended.

Enable an appropriate ShakeAlert-powered warning option on your phone. It detects an earthquake already in progress and may provide seconds to act. You may receive little or no advance warning, so act when you feel shaking rather than waiting for your screen.

How long everyday services could be out

The honest answer is that restoration will be uneven. One household could regain electricity while another still has a damaged service connection. Water pressure might return before drinking-water restrictions are lifted. A route opened for emergency vehicles may remain unsuitable for normal travel.

Washington Emergency Management’s household guidance warns that basic services can be interrupted for days, weeks, or months. The table below uses that broad planning range and specific regional scenario assumptions. These are planning horizons, not estimates issued by Cedar Ridge’s utilities.

Planning sources: FEMA Region 10 Cascadia Earthquake and Tsunami Response Plan; Washington Catastrophic Incident Annex; Washington household preparedness guidance; Cascadia Rising 2016 after-action report.

Preparing for two weeks buys options. It does not mean staying in an unsafe home for two weeks, waiting until supplies are gone to seek help, or ignoring an evacuation order. Identify early what would make your household need assistance or another place to stay.

Build a household plan that works without services

Put water first

Washington Department of Health recommends one gallon per person per day for at least two weeks. That is 14 gallons for one person, 28 for two, and 56 for four, before adding pets and extra needs for heat, illness, or personal care. Store water in manageable containers in more than one accessible location. Factory-sealed water is a straightforward choice; rotate water you fill yourself every six months. Follow DOH’s storage and treatment guidance.

Keep your water provider’s number and your household shutoff location on paper. Do not assume pressure at the faucet proves the water is safe. Follow boil-water, do-not-drink, or do-not-use instructions exactly. Boiling does not remove chemical contamination, and a camping filter is not a universal solution. Lake Sixteen is not a substitute for stored potable water.

Local infrastructure improvements help, but they do not remove the need to store water. Skagit PUD describes seismic improvements to its Mount Vernon transmission line. Households served by the PUD should follow its notices; those on another system or a private well should keep their own operator or service provider’s instructions.

Choose food you can actually use

Build a rotating two-week pantry around foods your household already eats. Include meals that need no cooking, a manual can opener, infant-feeding supplies where applicable, and appropriate foods for allergies or medically required diets. Freeze-dried meals still need safe water and often heat. A full freezer is useful, but it is not a two-week shelf-stable food plan. Washington’s kit guidance recommends building gradually and including each person’s everyday needs.

Keep refrigerator and freezer doors closed during an outage. CDC’s guide gives approximately four hours for a refrigerator, 48 hours for a full freezer, or 24 hours for a half-full freezer when doors remain shut. Discard unsafe perishables; never taste food to decide whether it is safe. Check CDC’s food-safety instructions.

Plan for medication, disability, and ongoing care

Talk with your pharmacist or clinician about an emergency medication supply, lawful refill options, and storage temperatures. Keep a paper medication list with doses, allergies, prescribers, and pharmacy contacts. Pack spare glasses, hearing-aid batteries, mobility supplies, and medical consumables as needed. Washington DOH recommends two weeks of medications and medical supplies; arrange a workable plan with your care team rather than changing treatment yourself.

For equipment that requires electricity, write down its actual battery runtime and the point at which you must move to a powered location. Discuss oxygen, dialysis, refrigeration, and other time-critical needs in advance. Make sure a trusted person knows how to help. PSE’s Life Support status does not guarantee uninterrupted service or priority restoration, so registration alone is not a backup-power plan.

Ask neighbors what assistance they would welcome. A person may need a written message rather than a spoken one, an accessible route, an interpreter, or help moving supplies. Keep personal care details within a consent-based support network. FEMA’s disability preparedness checklist emphasizes support networks, transport, and backup options for assistive devices.

Remember sanitation and pets

If sewer service is damaged, or a septic system needs electricity that is unavailable, stop normal flushing until you have appropriate guidance. Store a sturdy emergency-toilet setup, heavy-duty bags, absorbent material, gloves, soap, and handwashing water. Keep collected waste sealed and protected from children and animals, and follow local disposal instructions. DOH explains emergency toilet options and provides specific guidance for power-dependent sewage systems.

Pets need food, water, medication, carriers or leashes, identification, and a care buddy if you cannot get home. Practice loading carriers before an emergency. Check arrangements for pets before relying on a shelter, and plan separately for service animals’ needs. Washington’s pet preparedness resources can help.

Keep a small kit wherever you may be

A home supply cannot help you on a blocked commute. Keep a practical go-bag and a modest vehicle or workplace kit, with sturdy shoes, a flashlight, water, essential medicines, warm layers, a charging cable, and paper contact information. Size the bag so its owner can actually carry or move it. Store important documents securely and make necessary copies available offline.

Make home safer before the earthquake

Start with things that can fall: tall bookcases, televisions, mirrors, heavy frames above beds, and unsecured garage shelving. Keep heavy objects low, clear exits, and keep shoes and a flashlight beside the bed. Secure furniture with suitable hardware according to its instructions. These projects can prevent injuries even when a house has no structural damage.

Ask a qualified professional about your home’s foundation anchorage, short crawlspace walls, large garage-door openings, chimney, deck connections, and water-heater bracing. The right retrofit depends on the structure. An attractive exterior or a recent remodel does not establish seismic performance. FEMA’s Earthquake Safety at Home guide describes common weaknesses and improvements. Follow permit requirements and applicable HOA approval procedures for work.

Try a home hazard hunt

This 99-second Washington Emergency Management Division video is a useful starting point for a room-by-room check. Watch Home Hazard Hunt on YouTube. English captions are available. Read the home safety checklist.

Know your utilities without creating a new hazard

Learn your water and electrical shutoffs before an emergency. Have utility-specific instructions available, and avoid damaged panels, standing water, or exposed wiring. Stay well clear of fallen lines and anything touching them; a wire can be energized even when the neighborhood is dark.

If your home has PSE natural gas, do not automatically shut it off after shaking. PSE says to do so only if you smell, see, hear, or suspect escaping gas. If you suspect a leak, leave immediately, avoid switches or anything that could spark, and call 911 and PSE at 1-888-225-5773 from a safe location. Never turn gas back on yourself. Homes with propane should obtain tank and shutoff guidance from their propane supplier. Read PSE’s earthquake safety guidance.

Use backup power and cooking equipment safely

A portable generator must operate outdoors, at least 20 feet from doors, windows, and vents, with exhaust directed away from buildings. Never run one in a garage, even with the door open. Use working carbon monoxide alarms with backup power. CDC’s generator guidance explains the distance requirement.

Never connect a generator through a household outlet. A permanent connection needs a properly installed transfer system and qualified electrician. Keep equipment dry according to the manufacturer’s instructions, let it cool before refueling, and store fuel only in approved containers and locations. PSE explains generator electrical and fire safety. Use outdoor-only camp stoves and grills outdoors, away from openings. Do not heat a home with a gas oven. Battery lights are safer than candles. Review Washington DOH’s outage precautions.

A practical neighborhood plan to develop together

A useful Cedar Ridge plan can begin with a few households that know how to reach one another. Washington’s community preparedness program offers contact sheets, skills inventories, and planning materials. The following is a proposed framework for neighbors and the HOA to consider; it does not designate an adopted emergency plan, shelter, or official response team.

1. Form small, voluntary buddy groupsPair nearby households and include a backup person. Agree on a simple check-in after shaking, once everyone’s immediate surroundings are safe. Ask how each person wants assistance offered. Never treat no response as permission to enter a damaged building.
2. Choose safe check-in locationsIdentify a primary and alternate outdoor location with the HOA and property owners before publishing it. Consider falling branches, wires, unstable slopes, traffic, accessibility, and emergency-vehicle access. A mailbox cluster, road shoulder, or lakeshore is not automatically suitable. Reassess the location after every damaging event.
3. Create communications that can survive an outageAgree on a paper check-in method and, if neighbors want them, tested two-way radios with a shared channel and scheduled listening times. Test coverage across the actual terrain. Share short, factual messages and distinguish a firsthand observation from a rumor. Radios are a supplement, not guaranteed contact with emergency services.
4. Inventory skills and useful supplies privatelyInvite volunteers to list first-aid training, language skills, radios, charging equipment, and supplies they are willing to share. Record limitations too. Do not publish household medical details, access codes, absence schedules, or a map of valuable supplies. Participation and sharing should be explicit and voluntary.
5. Observe access routes without taking unsafe risksAgree how to report a blocked road, leaning tree, damaged culvert, or suspected slide from a safe position. Keep emergency access clear. Neighbors should not move energized wires, operate heavy equipment on unstable ground, clear tensioned trees, or cross damaged bridges. Those tasks require appropriate professionals.
6. Practice and improve the planHold a short annual drill: protect yourself, check your household, send a brief status message, and discuss what failed. Invite people with access and functional needs to shape the exercise. Use county training and CERT opportunities where available, and update arrangements when households change.

Have a family connection beyond the neighborhood

Choose an out-of-area contact outside the Pacific Northwest who agrees to relay messages. Write the number down. When service permits, text a short update such as “Safe at home. Staying here. Next check-in tonight.” Decide on nearby and distant family meeting places, and understand school, childcare, and workplace reunification procedures. Washington’s family planning guidance provides a printable contact card and practical questions.

Sign up for Skagit Ready alerts and keep a battery-powered radio available. County alerts can arrive by text, phone, or email, but damaged networks can delay them. Use official information for evacuation, water safety, shelters, and road restrictions. A neighborhood message chain should help circulate that information without turning an unconfirmed report into an instruction.

The first minutes through the first weeks

1. During shakingProtect your head and neck. Hold on and stay put until shaking stops. Repeat during aftershocks.
2. Immediately afterwardCheck for injuries and immediate danger. Put on sturdy shoes. Leave a building threatened by fire, a suspected gas leak, serious damage, or slope movement when you can do so safely. Call 911 for urgent threats to life. Give first aid within your training.
3. Once your household is safeCheck on agreed buddies without crossing hazards. Send a brief status update if possible. Keep pets controlled. Avoid unnecessary travel and never reenter an unsafe structure to retrieve supplies.
4. During the first dayEstablish safe shelter, drinking water, sanitation, and essential care. Listen for official instructions. Track food temperatures and battery runtime. Report urgent needs early rather than waiting for a medical device or critical supply to run out.
5. Over the following days and weeksKeep checking on one another. Reassess after aftershocks. Conserve supplies without compromising hydration or prescribed care. Use confirmed distribution and shelter information, follow restrictions, and obtain qualified inspections before occupying damaged structures.

A manageable way to start this month

• Today: Choose a safe protective action in each room, place shoes and a flashlight by the bed, and check emergency alerts.
• This week: Count household water needs, buy or fill the first containers, and add several no-cook meals. Ask one nearby household about a buddy arrangement.
• Next weekend: Secure a high-risk piece of furniture, locate utility shutoffs, and review the household’s medical and sanitation plan.
• Before the month ends: Build toward the two-week target, test charging equipment, practice a family check-in, and bring a concrete neighborhood-planning proposal to the HOA.

You do not need to finish every project at once. Water stored this week, a bookcase secured next weekend, and a conversation with a neighbor all make a real difference. The aim is a household that can adapt and a community that knows how to help safely when ordinary systems are under strain.