Connecticut experiences tornadoes, despite common perceptions that the region is immune. The state has a history of tornado activity, sometimes with significant impacts. Understanding these storms and how to prepare for them is important.
Tornado Activity in Connecticut
Tornadoes occur in Connecticut, with official records indicating over 100 events in modern history. The state averaged approximately 1.3 tornadoes per year between 1953 and 1991, with more recent data showing an average of two to three annually.
Most tornadoes in Connecticut are weak, typically EF-0 to EF-1 on the Enhanced Fujita scale, with wind speeds between 50 and 100 miles per hour. However, the state has experienced more intense tornadoes, including at least 27 rated EF-2 or greater, and three F4 intensity tornadoes. Notable examples include the 1878 Wallingford tornado, likely an F4 and the deadliest in Connecticut’s history with 29 fatalities, and the F4 Windsor Locks tornado in 1979.
Tornado activity in Connecticut peaks during the summer months, with June, July, and August collectively accounting for about 71% of all recorded tornadoes. These storms form when specific atmospheric conditions align, including warm, moist air near the surface, cooler air aloft, and wind shear. These conditions create a rotating updraft within a thunderstorm, which can descend as a tornado. The state’s proximity to the Atlantic Ocean also influences its tornado risk. Connecticut has seen active years, such as 2018 with nine tornadoes and 2020 with six.
Staying Safe During Severe Weather
Being prepared for severe weather, including tornadoes, involves understanding alerts and having an action plan. Alerts and warnings are disseminated through various channels. Residents can receive notifications via NOAA Weather Radio, local news, and weather applications like the FEMA app or Weather.gov app. Connecticut also utilizes the CT Alert emergency notification system; individuals can register online or by texting CTALERT to 888-777.
During a tornado warning, which means a tornado has been sighted or detected by radar, immediate action is needed. If indoors, seek shelter in a basement, storm cellar, or an interior room on the lowest floor of a sturdy building, staying away from windows. Getting under sturdy furniture, like a workbench or heavy table, provides additional protection. For those in mobile homes, evacuate immediately and find shelter in a more substantial building or designated storm shelter.
If caught outdoors or in a vehicle during a tornado warning, never try to outrun the tornado in a car. Instead, leave the vehicle and lie flat, face-down in a low-lying area or ditch, covering your head with your arms. Avoid seeking shelter under overpasses or bridges, as these offer little protection. A “tornado watch” signifies that conditions are favorable for tornadoes to develop, prompting heightened awareness.
An emergency kit is recommended. This kit should include:
- Bottled water
- Non-perishable food
- A battery-powered or hand-crank radio
- A flashlight with extra batteries
- A first-aid kit
- Prescription medications, copies of important documents, and cash