Severe thunderstorms developed across northern Aroostook county during the afternoon of the 24th in advance of a cold front crossing the region. The thunderstorms produced damaging winds...large hail and a tornado.

Hail in AROOSTOOK, MAINE
From 24-MAY-09 13:00:00 to 24-MAY-09 13:00:00 (EST-5)
Location: ST FRANCIS
Magnitude: 0.75 
Reported by: Public

Hail in AROOSTOOK, MAINE
From 24-MAY-09 13:27:00 to 24-MAY-09 13:27:00 (EST-5)
Location: (LIZ)LORING AFB LIME
Magnitude: 0.88 
Reported by: Other Federal Agency

The hail covered the ground.

Hail in AROOSTOOK, MAINE
From 24-MAY-09 13:37:00 to 24-MAY-09 13:37:00 (EST-5)
Location: EAGLE LAKE
Magnitude: 1.75 
Reported by: Law Enforcement

Thunderstorm Wind in AROOSTOOK, MAINE
From 24-MAY-09 14:00:00 to 24-MAY-09 14:00:00 (EST-5)
Location: COLBY
Magnitude: 52.00 EG
Reported by: Public

A 50 ft by 100 ft shed was blown down by wind gusts estimated at 60 mph.

Thunderstorm Wind in AROOSTOOK, MAINE
From 24-MAY-09 14:00:00 to 24-MAY-09 14:00:00 (EST-5)
Location: (CAR)CARIBOU ARPT
Magnitude: 52.00 EG
Reported by: NWS Employee

An 18 inch diameter tree was snapped near Cary Medical Center by wind gusts estimated at 60 mph.

Hail in AROOSTOOK, MAINE
From 24-MAY-09 14:00:00 to 24-MAY-09 14:00:00 (EST-5)
Location: (CAR)CARIBOU ARPT
Magnitude: 0.88 
Reported by: Official NWS Observations

Thunderstorm Wind in AROOSTOOK, MAINE
From 24-MAY-09 14:05:00 to 24-MAY-09 14:05:00 (EST-5)
Location: FT FAIRFIELD
Magnitude: 52.00 EG
Reported by: Law Enforcement

Four trees were toppled on the Grimes Road by wind gusts estimated at 60 mph.

Thunderstorm Wind in AROOSTOOK, MAINE
From 24-MAY-09 14:05:00 to 24-MAY-09 14:05:00 (EST-5)
Location: (CAR)CARIBOU ARPT
Magnitude: 52.00 EG
Reported by: Law Enforcement

Four trees were toppled on Grimes Mill Road by wind gusts estimated at 60 mph.

Thunderstorm Wind in AROOSTOOK, MAINE
From 24-MAY-09 14:05:00 to 24-MAY-09 14:05:00 (EST-5)
Location: (CAR)CARIBOU ARPT
Magnitude: 52.00 EG
Reported by: Law Enforcement

A large tree was toppled on York Street by wind gusts estimated at 60 mph.

Thunderstorm Wind in AROOSTOOK, MAINE
From 24-MAY-09 14:10:00 to 24-MAY-09 14:10:00 (EST-5)
Location: (CAR)CARIBOU ARPT
Magnitude: 52.00 EG
Reported by: Law Enforcement

Several trees and power lines were toppled in Caribou by wind gusts estimated at 60 mph.

Hail in AROOSTOOK, MAINE
From 24-MAY-09 14:10:00 to 24-MAY-09 14:10:00 (EST-5)
Location: CONNOR
Magnitude: 0.75 
Reported by: NWS Employee

Thunderstorm Wind in AROOSTOOK, MAINE
From 24-MAY-09 14:23:00 to 24-MAY-09 14:23:00 (EST-5)
Location: FT FAIRFIELD
Magnitude: 52.00 EG
Reported by: Public

Two trees were toppled across the Center-Limestone Road by wind gusts estimated at 60 mph.

Thunderstorm Wind in AROOSTOOK, MAINE
From 24-MAY-09 12:52:00 to 24-MAY-09 12:52:00 (EST-5)
Location: ALLAGASH
Magnitude: 52.00 EG
Reported by: COOP Observer

Wind gusts were estimated at 60 mph.

Tornado in AROOSTOOK, MAINE
From 24-MAY-09 13:15:00 to 24-MAY-09 13:19:00 (EST-5)
Location: EAGLE LAKE
Tornado F-scale: EF1
Reported by: NWS Storm Survey

A mini-supercell thunderstorm produced an EF1 tornado at the town of Eagle Lake. The tornado began near the Pinette Brook crossing of Convent Road. The tornado was then intermittently on the ground while moving through  Eagle Lake...eventually dissipating just before crossing State Route 11. Along the tornado path...hundreds of trees were snapped or uprooted in intermittent swaths and patches (DI 27, DOD 4). The tornado also destroyed an outbuilding...moderately damaged one home and caused minor damage to several homes and vehicles. A transport trailer was also overturned. Based on the damage...the tornado winds were estimated at around 110 mph. The average path width was around 150 yards.