Canada's Earthquake Early Warning System Now Active in Ontario and Quebec: How to Prepare and What to Do

What This Means for You

If you live in Ontario or Quebec, your phone can now alert you seconds before an earthquake strikes—giving you critical time to protect yourself. Canada's Earthquake Early Warning (EEW) system went live on November 27, 2025, covering over 10 million people in eastern Canada's most seismically active regions.

Those few seconds matter. Research shows that even 10-15 seconds of warning is enough time to drop under a desk, move away from windows, or pull over if you're driving. Here's exactly what you need to know and do.

If You Receive an Earthquake Alert:

Immediate action (you have seconds, not minutes):

DROP – Get down on your hands and knees immediately
COVER – Get under a sturdy desk or table, or cover your head and neck with your arms
HOLD ON – If under shelter, hold on and be prepared to move with it

Do NOT:

Run outside (falling debris is the biggest danger)
Stand in a doorway (this is outdated advice)
Try to call family members (phone lines will be jammed)

If you're driving: Pull over safely, away from overpasses, bridges, and power lines. Stay in your vehicle until shaking stops.

If you're in a high-rise: Stay where you are. Do not use elevators. Move away from windows.

How to Ensure You Receive Alerts:

Your smartphone should automatically receive Wireless Public Alerts if:

Your phone is turned on and within cellular range
Your phone is connected to an LTE network
You have a compatible device (most smartphones sold in Canada since 2018)

Check your settings:

iPhone: Settings → Notifications → scroll to bottom → ensure "Emergency Alerts" is ON
Android: Settings → Safety & Emergency → Wireless Emergency Alerts → ensure all alerts are ON

Important limitation: If you're very close to an earthquake's epicentre, you may be in the "late alert zone" where shaking arrives before or at the same time as the alert. The system works best for people at moderate distances from the earthquake.

If You Live in a High-Risk Zone:

Eastern Ontario (particularly the Ottawa-Gatineau corridor) and the St. Lawrence River valley are among Canada's most earthquake-prone regions outside British Columbia. The Western Quebec Seismic Zone has produced significant earthquakes historically.

Home earthquake preparedness checklist:

This week:

Secure heavy furniture to walls (bookcases, dressers, TVs)
Move heavy objects from high shelves
Know how to shut off gas, water, and electricity
Identify safe spots in each room (under sturdy tables, away from windows)

This month:

Create a 72-hour emergency kit with water, food, flashlight, first aid
Store emergency supplies under beds or in easily accessible locations
Take photos of your belongings for insurance purposes
Review your home insurance policy for earthquake coverage

For renters: You can still secure furniture using removable brackets. Discuss earthquake safety with your landlord.

For condo owners: Ask your condo board about the building's seismic assessment and emergency plan. High-rises built after 1990 generally meet modern seismic codes.

Insurance Considerations:

Standard home insurance in Canada typically does not cover earthquake damage. You need a separate earthquake endorsement.

Average annual cost: $100-$300 for most Ontario/Quebec homes Deductible: Usually 5-10% of your dwelling coverage (on a $500,000 home with a 5% deductible, you'd pay the first $25,000 of damage)

Whether earthquake insurance is worth it depends on:

Your home's proximity to fault lines
Your home's construction type (brick homes face higher risk than wood-frame)
Your ability to absorb repair costs if uninsured
Your mortgage requirements (some lenders require it in high-risk areas)

Contact your insurance provider to get a quote and assess your risk level.

For Parents and Schools:

Teach children the Drop-Cover-Hold On response. Practice it at home just like fire drills.

Ontario and Quebec schools already conduct earthquake drills. Ask your child's school about:

Their earthquake emergency plan
How they'll communicate with parents after an earthquake
Reunion procedures if school is evacuated

Create a family communication plan: Designate an out-of-province contact who can relay messages if local lines are jammed.

For Business Owners:

The EEW system also sends specialized alerts to critical infrastructure operators, allowing automatic protective measures like stopping trains and restricting bridge traffic.

If you operate a business:

Review your workplace emergency plan to include earthquake procedures
Ensure employees know Drop-Cover-Hold On
Secure heavy equipment and inventory
Consider business interruption insurance with earthquake coverage

The News: What Happened

On November 27, 2025, the federal government announced that Canada's Earthquake Early Warning system is now operational in Quebec and eastern Ontario. According to Natural Resources Canada, the system uses over 200 seismic sensors to detect earthquakes and send alerts through the National Public Alerting System before damaging shaking arrives.

The Honourable Tim Hodgson, Minister of Energy and Natural Resources, stated that "the EEW system is providing residents of Quebec and eastern Ontario with the critical seconds they need to take protective action." Ontario's Minister of Emergency Preparedness and Response, Jill Dunlop, added that "the EEW system uses advanced tools and proven science to help protect lives and build a more resilient province."

The system works by detecting the initial P-wave energy from earthquakes—these fast-moving waves arrive before the slower, more damaging S-waves that cause buildings to shake. Data centres calculate the earthquake's location and magnitude within seconds, then push alerts to phones, broadcasters, and infrastructure operators.

Public alerts are triggered for earthquakes estimated at magnitude 5.0 or greater that produce shaking at Modified Mercalli Intensity IV or higher. This threshold ensures alerts are only sent for earthquakes strong enough to potentially cause damage.

With British Columbia's system operational since May 2024, more than 10 million Canadians now live in areas covered by earthquake early warning—the country's most seismically active regions.

Analysis: Why This Matters

Eastern Canada's Earthquake Risk

Many Canadians don't realize that Ontario and Quebec face significant earthquake risk. The Western Quebec Seismic Zone, running through the Ottawa-Montreal corridor, experiences regular small earthquakes and has the potential for larger events.

Notable historical earthquakes in the region include:

1944 Cornwall-Massena earthquake (magnitude 5.8): Caused significant damage on both sides of the Canada-US border
1988 Saguenay earthquake (magnitude 5.9): Felt across eastern Canada and the northeastern United States
2010 Central Canada earthquake (magnitude 5.0): Centred near Buckingham, Quebec, felt from Toronto to Boston

While major earthquakes are less frequent in eastern Canada than in British Columbia, buildings here are often less prepared for seismic activity. Older brick buildings, common in Ottawa, Montreal, and Toronto, can be more vulnerable than modern wood-frame or steel construction.

The Value of Seconds

Research from earthquake early warning systems in Japan, Mexico, and California demonstrates that even brief warnings save lives. In the 2011 Tōhoku earthquake in Japan, the country's warning system gave Tokyo residents about 80 seconds of warning—enough time for trains to stop, surgeries to pause, and millions to take cover.

For eastern Canadians, typical warning times would range from a few seconds (for those near the epicentre) to 30+ seconds (for those farther away). Even at the short end, that's enough time to:

Move away from windows
Get under a desk
Turn off a stove
Pull over while driving

What Happens Next

Natural Resources Canada is working with the United States Geological Survey to ensure the system can detect earthquakes originating across the border, since seismic waves don't respect political boundaries. The two countries share data and use compatible software systems.

The EEW system represents a significant investment in public safety infrastructure. Combined with updated building codes and public education about earthquake preparedness, it's part of a broader effort to reduce earthquake risk in Canada.

Your Action Plan

Immediate (Today):

Check your phone settings to ensure emergency alerts are enabled
Practice Drop-Cover-Hold On with your family
Identify the safest spot in each room of your home

Short-term (This Week):

Secure tall furniture to walls
Move heavy objects from high shelves
Create or update your 72-hour emergency kit

Long-term (This Month):

Review your home insurance for earthquake coverage
Get a quote for earthquake insurance if you don't have it
Discuss earthquake emergency plans with your workplace and children's schools

Other Perspectives

Federal Government:

Minister Tim Hodgson emphasized the life-saving potential: "The EEW system is providing residents of Quebec and eastern Ontario with the critical seconds they need to take protective action." The government positioned this as part of broader emergency preparedness efforts.

Provincial Government (Ontario):

Minister Jill Dunlop highlighted the technology: "The EEW system uses advanced tools and proven science to help protect lives and build a more resilient province." Ontario has been coordinating with federal authorities on emergency response protocols.

Emergency Management Experts:

Experts note that early warning is only effective if people know what to do. Public education about Drop-Cover-Hold On remains critical. The system's success depends on people responding quickly when alerts arrive.

Infrastructure Operators:

The system automatically triggers protective measures at critical infrastructure—stopping trains, restricting bridge traffic, and activating alarms. This automated response could prevent secondary disasters from infrastructure failures during earthquakes.

Corrections Policy

We strive for accuracy. If you find an error in this analysis, please contact us through our contact form. We will promptly investigate and correct any factual inaccuracies.

Updates:

No corrections to date (as of November 27, 2025)

Emergency Preparedness Guide: Complete guide to preparing for emergencies in Canada
Natural Resources Canada - Earthquakes: Official earthquake information and alerts
GetPrepared.ca: Government of Canada emergency preparedness resources

Sources

Natural Resources Canada announcement, November 27, 2025
Earthquakes Canada - Earthquake Early Warning System technical documentation
CP24 reporting on Ontario-Quebec EEW activation
Government of Canada emergency preparedness guidelines