Earthquake preparedness in Vancouver

If you've lived in California, this will feel familiar. If you're coming from Chicago or Atlanta, it's a new habit: Vancouver plans for a big one, and you should too.

The short version

Vancouver sits near the Cascadia subduction zone, the same fault system that worries Seattle and Portland. Its last megathrust quake, around magnitude 9, struck in 1700 [1][2].
Damaging quakes hit BC about once a decade, and nobody can predict when [3].
BC has an earthquake early warning system since August 2024. It can push an alert to your phone seconds to tens of seconds before strong shaking [4].
When it shakes: Drop, Cover and Hold On [3].
Keep at least three days of supplies, with 4 liters (about 1 gallon) of water per person per day [5].
Older buildings carry most of the risk, and Vancouver's 2026 retrofit plan is voluntary, not mandatory [6].

Why Vancouver plans for a big one

Cascadia, in plain English

Off the West Coast, from mid Vancouver Island down to northern California, the Juan de Fuca Plate is sliding under the North American Plate. That boundary is the Cascadia subduction zone [1]. When it locks up and then slips, it produces "megathrust" earthquakes, the biggest kind on Earth.

Natural Resources Canada says scientists have identified 13 of these events in the past 6,000 years, an average of one every 500 to 600 years, but the gaps have ranged from about 200 to 800 years [1]. The last one, around magnitude 9, struck on January 26, 1700 [2]. That's not a countdown clock. It just means the region is well within the window.

The fault is about 150 km (95 miles) from Vancouver [1]. Shaking from a megathrust quake can last several minutes, which is why it can damage buildings that would ride out a shorter quake [1]. Based on what happened in Anchorage in 1964, NRCan expects small buildings here to fare better than large buildings and bridges [1].

The other quakes

Cascadia gets the headlines, but it isn't the only threat. Quakes can also strike inside the plates, including under the Strait of Georgia. The City of Vancouver's own planning uses a magnitude 7.2 Strait of Georgia scenario, which it estimates would leave more than 6,000 buildings damaged beyond repair or needing extensive repairs [6].

The alert on your phone

Canada's earthquake early warning system went live in BC on August 29, 2024, run by Natural Resources Canada with the province [4]. A sensor network picks up the first waves of a quake and sends an automatic alert through the National Public Alerting System, the same system behind Amber Alerts and wildfire warnings on Canadian phones [4].

Threshold: alerts go out for quakes above magnitude 5 with expected shaking stronger than intensity IV [4].
Warning time: a few seconds to tens of seconds, depending on how far you are from the epicenter [4].
Close quakes may give no warning at all. Treat the alert as a bonus, not a guarantee.

Check that emergency alerts are switched on in your phone settings. If you're still on a US carrier roaming in Canada, it's worth getting a Canadian SIM or eSIM sooner rather than later, partly for this.

What to do when it shakes

PreparedBC's rule is simple: Drop, Cover and Hold On [3].

Drop to your hands and knees before the shaking knocks you down.
Cover your head and neck under a sturdy table or desk, or against an interior wall away from windows.
Hold on until the shaking stops. In a Cascadia quake, that could be minutes [1].
In bed? Stay there, face down, and cover your head with a pillow.
Outside? Move away from buildings, trees and power lines if you can do it safely.
Driving? Pull over away from overpasses and bridges, and stay in the car.
After: expect aftershocks. Check for gas leaks, put on shoes before you walk on broken glass, and leave by the stairs if the building looks damaged.

Don't run outside during the shaking. In downtown Vancouver, the danger is falling glass and debris from building facades.

Tsunamis: what applies in Vancouver

BC divides its coast into five tsunami notification zones. Metro Vancouver is in Zone E, along with the Strait of Georgia and the Gulf Islands [7]. Natural Resources Canada says the coastlines most exposed to damaging tsunamis are the ones facing the open Pacific [1], and Vancouver is sheltered behind Vancouver Island. The west coast of the island, Zone C, which takes in Tofino and Ucluelet, faces a far higher risk [7].

Sheltered isn't zero, though. If you live in a low-lying area by the water, like False Creek or parts of Richmond, or you're on the beach and feel a long, strong quake, head to higher ground without waiting for an official message. And if you take a long weekend to Tofino, learn the tsunami route signs before you hit the beach.

Your building

This is where renters and buyers have the most say. Vancouver has roughly 90,000 buildings, and nearly 70% were built before early modern seismic standards came in around 1990 [6]. The city says close to 80% of its seismic risk comes from a few building types, including concrete residential and commercial towers, wood apartment buildings, unreinforced masonry buildings and small commercial buildings [6].

In June 2026, city council received a Buildings Seismic Risk Reduction Action Plan for 2026 to 2030. It promises a public at-risk building inventory and a voluntary retrofit program with incentives, but it explicitly doesn't mandate retrofits [6]. Existing rules already require some seismic upgrades when a building goes through a major renovation [6].

Check	Why it matters
Year built	Pre-1990, and especially pre-1973, buildings were designed before modern seismic standards [6]
Brick walls with no steel or concrete frame	Unreinforced masonry is one of the riskiest types [6]
Open parking or shops on the ground floor	"Soft" ground floors performed poorly in past quakes worldwide
Retrofit history	Ask the landlord or strata whether a seismic upgrade has been done
Heavy items above beds	Strap bookshelves and TVs to the wall
Insurance	Tenant and home policies often treat earthquake cover as an add-on with a high deductible; read the fine print

PreparedBC publishes an Apartments and Condos Guide for people in multi-unit buildings, which is most of downtown Vancouver [8].

Your kit

PreparedBC asks for two things: a home kit and a smaller grab-and-go bag for home, work and the car [5].

Home kit, in one or two containers somewhere easy to reach [5]:

Water: 4 liters (about 1 gallon) per person per day; more for kids, nursing parents, sick people or hot weather
Non-perishable food for at least three days to a week, plus a manual can opener
Phone charger or power bank, a battery or hand-crank radio, a flashlight and spare batteries
A first-aid kit and medications
Toiletries and spare glasses or contacts
Copies of key documents and your emergency plan
Small bills in cash
Garbage bags and wet wipes
Seasonal clothing, sturdy shoes, an emergency blanket, dust masks and a whistle
A "Help/OK" sign for your window

For Americans, add: your US passport (or a copy and the expiry date), your Canadian work permit or PR card, and a written list of phone numbers for family back home. Networks jam after big quakes; texts often get through when calls don't.

The US side

Enroll in STEP so the US Consulate General in Vancouver can send you alerts and, in a major disaster, check on US citizens.
Lost your passport in the chaos? The consulate can issue an emergency passport.
Agree on an out-of-area contact. A relative in, say, Denver is easier to reach after a regional quake than anyone in Vancouver or Seattle.

Want to know which buildings in your neighborhood have been retrofitted? Ask the people who live there, and ask in our community group for Americans in Canada.

Earthquake preparedness in Vancouver: Cascadia, your building and the phone alert