Several supercell thunderstorms with very strong damaging winds and large hail moved across northeast Aroostook county during the evening of the 22nd. The storms also produced isolated flash flooding. The storms formed with an upper disturbance crossing the region. The greatest impacts occurred in an area from Ashland...to Caribou...to Fort Fairfield where extensive tree damage and numerous power outages were reported.

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 18:45:00 to 22-JUL-11 18:45:00 (EST-5)
Location: CARIBOU
Magnitude: 65.00 EG
Reported by: Public

Utility poles and power lines were toppled on South Main Street by wind gusts estimated at 75 mph.

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 18:45:00 to 22-JUL-11 18:45:00 (EST-5)
Location: CARIBOU
Magnitude: 65.00 EG
Reported by: NWS Employee

An oak tree was split on Lombard Street by wind gusts estimated at 75 mph.

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 18:40:00 to 22-JUL-11 18:40:00 (EST-5)
Location: CARIBOU
Magnitude: 70.00 EG
Reported by: Trained Spotter

Numerous trees were toppled and snapped along River Road by wind gusts estimated at 80 mph.

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 18:25:00 to 22-JUL-11 18:25:00 (EST-5)
Location: NEW SWEDEN
Magnitude: 65.00 EG
Reported by: Public

Five trees were uprooted by wind gusts estimated at 75 mph.

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 19:27:00 to 22-JUL-11 19:27:00 (EST-5)
Location: HARVEY
Magnitude: 52.00 EG
Reported by: Fire Department/Rescue

A tree was toppled at a camp site by wind gusts estimated at 60 mph. The falling tree injured 4 campers. All injuries were non-life threatening.

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 18:35:00 to 22-JUL-11 18:35:00 (EST-5)
Location: ASHLAND
Magnitude: 70.00 EG
Reported by: Public

A garage was moved 8 to 10 feet off its foundation by wind gusts estimated at 80 mph.

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 18:35:00 to 22-JUL-11 18:35:00 (EST-5)
Location: BARRETTS
Magnitude: 65.00 EG
Reported by: NWS Employee

Numerous trees were toppled and snapped by wind gusts estimated at 75 mph. The winds tore the power lines from a house. An estimated 2.00 inches of rain fell in 20 minutes.

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 18:45:00 to 22-JUL-11 18:45:00 (EST-5)
Location: (CAR)CARIBOU ARPT
Magnitude: 70.00 EG
Reported by: Other Federal Agency

Numerous trees were toppled and snapped by wind gusts estimated at 80 mph. Portions of Grimes Road...Albair Road...Powers Road and Route 1 were closed for a time due to the number of fallen trees. Numerous utility poles and power lines were also toppled.

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 18:45:00 to 22-JUL-11 18:45:00 (EST-5)
Location: CARIBOU
Magnitude: 70.00 EG
Reported by: Public

Numerous large trees...up to 2 to 3 feet in diameter...were toppled and snapped along River Road by wind gusts estimated at 80 mph.

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 18:55:00 to 22-JUL-11 18:55:00 (EST-5)
Location: FT FAIRFIELD
Magnitude: 61.00 EG
Reported by: Law Enforcement

Numerous trees were toppled and snapped around Fort Fairfield by wind gusts estimated at 70 mph.

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 19:00:00 to 22-JUL-11 19:00:00 (EST-5)
Location: CARIBOU
Magnitude: 65.00 EG
Reported by: Law Enforcement

Trees were toppled and snapped on Washburn Road by wind gusts estimated at 75 mph.

Hail in AROOSTOOK, MAINE
From 22-JUL-11 18:15:00 to 22-JUL-11 18:15:00 (EST-5)
Location: STOCKHOLM
Magnitude: 1.75 
Reported by: COOP Observer

Hail in AROOSTOOK, MAINE
From 22-JUL-11 18:15:00 to 22-JUL-11 18:15:00 (EST-5)
Location: JEMTLAND
Magnitude: 1.75 
Reported by: Public

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 18:15:00 to 22-JUL-11 18:15:00 (EST-5)
Location: JEMTLAND
Magnitude: 61.00 EG
Reported by: Public

Trees were toppled and snapped on Moose Run Road by wind gusts estimated at 70 mph.

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 18:30:00 to 22-JUL-11 18:30:00 (EST-5)
Location: ASHLAND
Magnitude: 61.00 EG
Reported by: Trained Spotter

Numerous trees were toppled and snapped around Ashland by wind gusts estimated at 70 mph.

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 18:36:00 to 22-JUL-11 18:36:00 (EST-5)
Location: (CAR)CARIBOU ARPT
Magnitude: 65.00 MG
Reported by: Official NWS Observations

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 18:39:00 to 22-JUL-11 18:39:00 (EST-5)
Location: CARIBOU
Magnitude: 65.00 EG
Reported by: NWS Employee

Numerous trees were toppled and snapped around the Caribou area due to wind gusts estimated at 75 mph. Many utility poles and power lines were also toppled leading to extensive power outages.

Flash Flood in AROOSTOOK, MAINE
From 22-JUL-11 18:45:00 to 22-JUL-11 18:45:00 (EST-5)
Location: CARIBOU MCCROSSIN AR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorms producing 2.00 to 4.00 inches of rain per hour produced flash flooding around the Caribou area. Flash flooding was reported on South Main Street...Fenderson Street and Grimes Road.

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 18:15:00 to 22-JUL-11 18:15:00 (EST-5)
Location: JEMTLAND
Magnitude: 65.00 EG
Reported by: NWS Employee

A large tree was toppled on West Road...with numerous trees toppled and snapped on Hedman Road...by wind gusts estimated at 75 mph.

Thunderstorm Wind in AROOSTOOK, MAINE
From 22-JUL-11 18:35:00 to 22-JUL-11 18:35:00 (EST-5)
Location: CARIBOU
Magnitude: 70.00 EG
Reported by: Public

A trailer on the Grimes Road was lifted off its foundation by wind gusts estimated at 80 mph.