A significant severe weather event occurred across east central New York and adjacent western New England, including Litchfield County on Thursday June 9th. A very warm and humid air mass was in place across the region on the morning of June 9th. A cold front was positioned well to the north and west of the region, toward the Upper Great Lakes. However, a well-defined pre-frontal trough marched across Litchfield County late in the afternoon. This pre-frontal trough showed up well in observational data, with an abrupt wind shift to the northwest and a sharp drop in dew points. The pre-frontal trough triggered convection, first as a series of discrete storms developing into a broken line, which eventually evolved into an organized line of severe storms known as a severe quasi-linear-convective-system, QLCS. Initially when the storms were discrete, hail was the main threat. Once the QLCS developed, damaging winds were the main threat. The severe storms resulted in numerous power outages with the large hail denting vehicles.

Hail in LITCHFIELD, CONNECTICUT
From 09-JUN-11 08:35:00 to 09-JUN-11 08:37:00 (EST-5)
Location: CANAAN
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail was reported during a thunderstorm in Canaan.

Hail in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:30:00 to 09-JUN-11 15:30:00 (EST-5)
Location: WEST TORRINGTON
Magnitude: 1.50 
Crop damage: 0.00K
Reported by: Trained Spotter

Ping-pong ball size hail was reported during a thunderstorm in Torrington.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:30:00 to 09-JUN-11 15:30:00 (EST-5)
Location: WINSTED
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Amateur Radio

Trees and wires were reported down on Route 183 in Winsted due to strong thunderstorm winds.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:58:00 to 09-JUN-11 15:58:00 (EST-5)
Location: NEWFIELD
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Public

Trees were reported down in Torrington due to strong thunderstorm winds.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 09-JUN-11 16:00:00 to 09-JUN-11 16:00:00 (EST-5)
Location: WOODBURY
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were reported down in Woodbury due to strong thunderstorm winds.

Hail in LITCHFIELD, CONNECTICUT
From 09-JUN-11 16:00:00 to 09-JUN-11 16:02:00 (EST-5)
Location: BURRVILLE
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Public

Quarter size hail was reported during a thunderstorm approximately 3 miles east-northeast of Torrington.

Hail in LITCHFIELD, CONNECTICUT
From 09-JUN-11 16:07:00 to 09-JUN-11 16:07:00 (EST-5)
Location: WINSTED
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Public

Quarter size hail was reported during a thunderstorm in Winsted.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 09-JUN-11 16:07:00 to 09-JUN-11 16:07:00 (EST-5)
Location: CANAAN
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Public

Trees were reported down in Canaan due to strong thunderstorm winds.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 09-JUN-11 16:16:00 to 09-JUN-11 16:16:00 (EST-5)
Location: LANESVILLE
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Dozens of trees were reported down across Pumpkin Hill Road in New Milford due to strong thunderstorm winds.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 09-JUN-11 16:20:00 to 09-JUN-11 16:20:00 (EST-5)
Location: NEW MILFORD
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Public

Trees and wires were reported down in New Milford due to strong thunderstorm winds.

Hail in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:33:00 to 09-JUN-11 15:35:00 (EST-5)
Location: WINSTED
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Ping pong ball size hail was reported in Winsted during a thunderstorm.

Tornado in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:48:00 to 09-JUN-11 15:48:00 (EST-5)
Location: WOODBURY
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service Storm Survey Team confirmed a brief tornado touchdown  on Great Hollow Road within a greater area of straight line wind damage consistent with a microburst.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:48:00 to 09-JUN-11 15:48:00 (EST-5)
Location: WOODBURY
Magnitude: 87.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Straight line wind damage occurred in Woodbury consistent with a microburst with winds moving southwest to northeast. Most of the damage was to hardwood trees and covered an area approximately one mile wide by one and one half miles long. The area of damage was bounded roughly by Upper Grassy Hill Road and Great Hollow Road.

Hail in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:13:00 to 09-JUN-11 15:15:00 (EST-5)
Location: NORFOLK
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Public

Golf ball size hail was reported during a thunderstorm in Norfolk.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:00:00 to 09-JUN-11 15:00:00 (EST-5)
Location: SALISBURY
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Department of Highways

Trees were reported down on Route 41 in Salisbury due to strong thunderstorm winds.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:30:00 to 09-JUN-11 15:30:00 (EST-5)
Location: BIRCH HILL
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Department of Highways

A large tree and wires were reported down on Route 7 in Kent between Bulls Bridge Road and Route 341 due to strong thunderstorm winds.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:40:00 to 09-JUN-11 15:40:00 (EST-5)
Location: LIME ROCK STN
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Department of Highways

Trees were reported down on Route 7 between Route 112 and Route 128 in Sharon due to strong thunderstorm winds.

Hail in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:45:00 to 09-JUN-11 15:47:00 (EST-5)
Location: WINCHESTER CENTER
Magnitude: 1.25 
Crop damage: 0.00K
Reported by: Public

Quarter to half dollar size hail was reported during a thunderstorm in Winchester Center.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:35:00 to 09-JUN-11 15:35:00 (EST-5)
Location: PARK LANE
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was reported down on a house in New Milford due to strong thunderstorm winds.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:40:00 to 09-JUN-11 15:40:00 (EST-5)
Location: NEW PRESTON
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Amateur Radio

A tree was reported down across Route 202 in New Preston due to strong thunderstorm winds.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:45:00 to 09-JUN-11 15:45:00 (EST-5)
Location: LITCHFIELD
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Amateur Radio

Trees were reported down across Route 202 in Litchfield due to strong thunderstorm winds.

Thunderstorm Wind in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:50:00 to 09-JUN-11 15:50:00 (EST-5)
Location: WINCHESTER CENTER
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were reported down in Winchester due to strong thunderstorm winds.

Hail in LITCHFIELD, CONNECTICUT
From 09-JUN-11 15:53:00 to 09-JUN-11 15:55:00 (EST-5)
Location: NORFOLK
Magnitude: 1.50 
Crop damage: 0.00K
Reported by: Public

Ping-pong ball size hail was reported during a thunderstorm in Norfolk.