A low pressure system moved eastward across the region on Wednesday, July 21st. The system's warm front lifted to the north during the morning ushering in a moist and unstable airmass. A cold front moved across the area during the evening. In addition, a vigorous disturbance in the upper levels of the atmosphere, along with strong winds, led to the development of multiple lines and clusters of strong to severe thunderstorms during the afternoon and evening hours.
A supercell moved across Litchfield County during the afternoon and produced intermittent damage along a track from Sharon to Litchfield with brief tornadic touchdowns confirmed in East Litchfield, Thomaston and Terryville.

Tornado in LITCHFIELD, CONNECTICUT
From 21-JUL-10 15:05:00 to 21-JUL-10 15:10:00 (EST-5)
Location: TERRYVILLE
Tornado F-scale: EF1
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A supercell that moved across Litchfield County during the afternoon hours produced  a tornado that made brief touchdowns in East Litchfield, Thomaston and Terryville with damage mainly to hardwood and softwood trees. There was little evidence of direct structural damage.
In Terryville, tornadic damage occurred along Prospect Street and Route 6. Damage was reported to a gas station awning on Route 6.

Funnel Cloud in LITCHFIELD, CONNECTICUT
From 21-JUL-10 14:45:00 to 21-JUL-10 14:48:00 (EST-5)
Location: LITCHFIELD
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A funnel cloud was observed from the Village Green in Litchfield.

Hail in LITCHFIELD, CONNECTICUT
From 21-JUL-10 14:05:00 to 21-JUL-10 14:10:00 (EST-5)
Location: SHARON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Nickel to quarter size hail was reported during a thunderstorm in Sharon.

Hail in LITCHFIELD, CONNECTICUT
From 21-JUL-10 14:44:00 to 21-JUL-10 14:50:00 (EST-5)
Location: LITCHFIELD
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Public

Hail ranging from a half an inch up to golf ball size was reported during a thunderstorm throughout the Town of Litchfield.

Tornado in LITCHFIELD, CONNECTICUT
From 21-JUL-10 14:58:00 to 21-JUL-10 15:02:00 (EST-5)
Location: THOMASTON
Tornado F-scale: EF1
Crop damage: 0.00K
Reported by: NWS Storm Survey

A supercell that moved across Litchfield County during the afternoon hours produced  a tornado that made brief touchdowns in East Litchfield, Thomaston and Terryville with damage mainly to hardwood and softwood trees. There was little evidence of direct structural damage.
In Thomaston, tornadic damage occurred near D Welton Way.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 21-JUL-10 14:05:00 to 21-JUL-10 14:26:00 (EST-5)
Location: SHARON
Magnitude: 78.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Numerous trees and wires were downed by straight line winds from a thunderstorm. Damage was observed along Main Street in Sharon, along Fairfield Road and on West Cornwall Road near Route 7.

Tornado in LITCHFIELD, CONNECTICUT
From 21-JUL-10 14:55:00 to 21-JUL-10 14:59:00 (EST-5)
Location: THOMASTON
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A supercell that moved across Litchfield County during the afternoon hours produced  a tornado that made brief touchdowns in East Litchfield, Thomaston and Terryville with damage mainly to hardwood and softwood trees. There was little evidence of direct structural damage.
In Thomaston, tornadic damage occurred just west of Fenn Road.

Hail in LITCHFIELD, CONNECTICUT
From 21-JUL-10 14:44:00 to 21-JUL-10 14:50:00 (EST-5)
Location: TORRINGTON
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Public

Hail ranging in size from a half of an inch up to quarter size was reported during a thunderstorm in the Town of Torrington.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 21-JUL-10 14:26:00 to 21-JUL-10 14:26:00 (EST-5)
Location: WEST GOSHEN
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

Trees were reported down along Route 4 in West Goshen due to strong thunderstorm winds.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 21-JUL-10 15:05:00 to 21-JUL-10 15:07:00 (EST-5)
Location: THOMASTON
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Trees and wires were reported down in Thomaston due to strong thunderstorm winds. Some wires were down on cars. Also, fires were reported.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 21-JUL-10 14:52:00 to 21-JUL-10 14:52:00 (EST-5)
Location: LITCHFIELD
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were reported down on Route 63 in Litchfield heading toward Morris due to strong thunderstorm winds.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 21-JUL-10 14:50:00 to 21-JUL-10 14:50:00 (EST-5)
Location: EAST LITCHFIELD
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Wires were reported down on a car in East Litchfield due to strong thunderstorm winds.

Hail in LITCHFIELD, CONNECTICUT
From 21-JUL-10 14:48:00 to 21-JUL-10 14:52:00 (EST-5)
Location: EAST LITCHFIELD
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Golf ball size hail was reported during a thunderstorm in East Litchfield.

Tornado in LITCHFIELD, CONNECTICUT
From 21-JUL-10 14:51:00 to 21-JUL-10 14:55:00 (EST-5)
Location: EAST LITCHFIELD
Tornado F-scale: EF1
Property damage: 4.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A supercell that moved across Litchfield County during the afternoon hours produced  a tornado that made brief touchdowns in East Litchfield, Thomaston and Terryville with damage mainly to hardwood and softwood trees. There was little evidence of direct structural damage.
In East Litchfield, tornadic damage occurred in a line across East Litchfield Road and East Litchfield Road South.

Hail in LITCHFIELD, CONNECTICUT
From 21-JUL-10 14:57:00 to 21-JUL-10 15:01:00 (EST-5)
Location: EAST LITCHFIELD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny to nickel size hail was reported during a thunderstorm in Harwinton.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 21-JUL-10 14:20:00 to 21-JUL-10 14:20:00 (EST-5)
Location: CORNWALL BRIDGE
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple trees were reported down in Cornwall, including a large tree on Route 7, due to strong thunderstorm winds.