A tornado touched down in Thompson Thursday morning.
After hours of heavy rain across the state, a tornado formed as a storm cell was moving out of Connecticut, according to tornado debris signature on Live First Alert Doppler Radar.
It happened around 10:15 a.m. along Route 12 right at the Massachusetts border.
A debris signature indicates a tornado has touched down and is throwing debris into the air, according to NBC Connecticut meteorologist Bob Maxon.
There are several trees and powerlines down in the area.
Video from NBC Connecticut meteorologist Josh Cingranelli showed Route 12 littered with trees and broken utility poles.
About 600 Eversource customers were without power as of 2 p.m.
The National Weather Service issued a tornado warning for the same storm as it crossed into Massachusetts. A survey crew will arrive either today or tomorrow to investigate.
There is no word if anyone was injured.
The Department of Public Works in Thompson has asked the state Department of Transportation to close Route 12 so that work to clean up the tree damage and downed wires can begin.