Lightning Map — Connecticut

Track real-time lightning strikes and thunderstorm activity across Connecticut. With an average of 25 thunderstorm days per year, Connecticut is a state with notable seasonal storm activity.

25
Avg Storm Days/Year
4
Cities Tracked
3.6M
Population

Data sourced from NOAA GOES-19 Geostationary Lightning Mapper (GLM) and the Storm Prediction Center (SPC).

About Lightning in Connecticut

Connecticut averages 25 thunderstorm days per year, placing it right at the national average of 25 days. Located at approximately 42°N latitude, Connecticut is a New England state along Long Island Sound, where maritime air moderates thunderstorm frequency but summer heat waves can trigger intense convective outbreaks.

In Connecticut, maritime air masses interact with continental weather patterns during warm months. Peak thunderstorm activity occurs during June through August, when conditions align for the most frequent lightning strikes. With a population of 3.6 million residents, storm awareness and lightning safety are important considerations for anyone living in or visiting Connecticut.

#39
out of 50 states
25
storm days/year
equal to the US average

When Thunderstorms Peak in Connecticut

Thunderstorm season in Connecticut runs from June through August. Storms are typically driven by frontal systems and can develop rapidly during warm, humid afternoons. While the season is more compressed than in southern states, individual storms can be intense with frequent cloud-to-ground lightning.

Peak Season
June through August

Top Cities in Connecticut

Monitor lightning activity in these Connecticut cities

Bridgeport

CT
25 storm days/yr

New Haven

CT
25 storm days/yr

Stamford

CT
24 storm days/yr

Hartford

CT
26 storm days/yr

Lightning Safety in Connecticut

Stay safe during the 25 thunderstorm days Connecticut averages each year

Follow the 30-30 Rule

If the time between seeing lightning and hearing thunder is 30 seconds or less, seek shelter. Stay indoors for 30 minutes after the last thunderclap.

Stay Indoors During Storms

With 25 thunderstorm days annually in Connecticut, it's still worth being prepared when storms do occur. Avoid windows and stay away from plumbing.

Monitor Lightning Activity

Use Lightning Tracker to get real-time alerts when storms approach your area in Connecticut. Early awareness helps you make safer decisions.

Outdoor Safety

If caught outside, avoid open fields, hilltops, and isolated trees. Seek shelter in a substantial building or hard-topped vehicle.

Useful Guides for Connecticut

These pages help visitors who search for maps, nearby strikes, and alert setup

Near me How to check lightning near you in Connecticut

Use this guide when you want to know how fast nearby strikes can become a real safety problem in Connecticut.

 Map guide How to read a lightning map for Connecticut

Understand clusters, timing, and storm movement before using launch alerts in the app.

 Alerts Best ways to get lightning alerts in Connecticut

Compare app alerts, NOAA weather radio, and local warning workflows for storms in your area.
App links later

Track Lightning in Connecticut Right Now

The app links can be added after release. For now, use the Connecticut hub, city pages, and lightning guides to cover map and safety intent.

Launching Soon iOS & Android

App links go live at release. For now use the lightning maps and guides on this site.