Earthquakes risk in Connecticut

You're standing in the driveway of a 1920s colonial in Hartford County, and the home inspector points at a hairline crack in the foundation. Is that an earthquake problem? Probably not. But in Connecticut, the question isn't crazy.

The state's overall earthquake risk is a 2 out of 5 on our scale — low, but not zero. USGS records small earthquakes in and around Connecticut, and the Moodus area in Middlesex County has a long history of felt tremors and booms. Most of what you'll feel here is light shaking: a picture knocked crooked, a chimney crack, maybe a few bricks on the ground. The bigger risk is that older housing stock in places like Fairfield County, Litchfield County, and the Connecticut River Valley wasn't built with seismic bracing in mind.

Small quakes have also been recorded in eastern Connecticut, including around Windham and New London counties. Coastal Connecticut, from Greenwich through New Haven and New London, has its own layered risk: earthquake shaking is less likely than hurricane wind and flood, but the same older housing stock shows up in all three.

Who this hits hardest

Earthquakes don't care about property lines, but they do care about what your house is made of. In Connecticut, the homes most likely to take meaningful damage are:

• Older masonry homes. Unreinforced brick or stone foundations and chimneys in Hartford, New Haven, and Litchfield County can crack when the ground shakes.
• Homes with tall, heavy chimneys. A chimney is often the first thing to fail. If yours is brick and unbraced, it's a priority.
• Houses on soft soils. The Connecticut River Valley and parts of the Naugatuck Valley have softer sediments that can amplify shaking compared with bedrock ridges.
• Mobile and manufactured homes. If the home isn't tied down to its foundation, shaking can shift it off supports.
• Renters. You don't control the building, but you can still secure your own space and know your exits.

After the event — claims and repairs

Here's the insurance reality. A standard Connecticut homeowners policy typically excludes earthquake damage. You usually need a separate earthquake endorsement or a standalone policy. Some insurers offer it; some don't. Ask your agent directly: If an earthquake cracks my foundation, is there any coverage? Get the answer in writing.

Flood insurance is separate too. The National Flood Insurance Program and private flood policies cover water, not shaking. After a hurricane, insurers often split wind damage from flood damage: wind may be covered by your homeowners policy, subject to your hurricane deductible, while flood needs its own policy. Don't assume one claim covers both.

If a Connecticut earthquake does damage your home, document everything before you clean up. Photograph cracks, fallen chimneys, and displaced items. Call your insurer if you have earthquake coverage. If there's a presidential disaster declaration, FEMA may offer grants or SBA loans, but that help is not a substitute for insurance. For state guidance, start with the Connecticut Division of Emergency Management and Homeland Security, and follow your town's emergency management office.

Repairs should go to licensed Connecticut contractors. After any disaster, out-of-state crews show up. Get a written estimate, check registration, and never pay in full upfront. Chimney and foundation repairs are specialized; a general handyman may not be the right call.

Before the season starts

Earthquakes don't have a season in Connecticut. That's the frustrating part. So borrow the hurricane-season calendar: before June 1, or before you close on a house, do a walkthrough.

1. Strap the water heater. A 50-gallon tank can tip and break gas lines. Strapping kits are cheap and take an hour.
2. Brace or replace the chimney. If your brick chimney is tall and unreinforced, have a mason evaluate it. This is the single fix I'd prioritize first.
3. Secure tall furniture. Bookcases, china cabinets, and TVs. Use anchors into studs, not drywall.
4. Know your shutoffs. Gas, water, electric. Teach everyone in the house.
5. Build a small kit. Flashlight, shoes, water, medications, and a paper list of contacts. Ready.gov has a full list.

If you only do one thing with limited time and money, do the chimney and water heater. Those are the two failures most likely to turn a small Connecticut earthquake into a real repair bill.

Questions we get

Does Connecticut actually have earthquakes?

Yes, but they're usually small. USGS instruments record minor quakes in the region, and the Moodus area in Middlesex County has a long history of felt shaking and booms. A magnitude that would be a footnote in California can still crack an old chimney here.

Is earthquake insurance required in Connecticut?

No. Connecticut does not require earthquake coverage for homeowners. Lenders may require flood insurance in a flood zone, but earthquake insurance is almost always optional. That means many homeowners are uncovered without realizing it.

What should I do right after a Connecticut earthquake?

Check yourself and your family first. If you smell gas or see fire, get out and call 911. Then check for structural damage, chimneys, and foundation cracks. If you have earthquake coverage, photograph everything and call your insurer. If you don't, document anyway for potential FEMA assistance and repair planning.

Official sources

• Connecticut Division of Emergency Management and Homeland Security
• USGS Earthquake Hazards Program
• Ready.gov – Earthquakes
• FEMA Earthquake Safety