Broad shortwave crossing southern Canada pushed an associated cold front into southern Canada during the early afternoon. A pre-frontal trough moved into eastern New York during the early afternoon with individual cells and line segments forming into one large squall line with bowing segments. The squall line pushed into central and southern new hampshire by mid afternoon and reached the coast by early evening. Good heating ahead of this line with dew points in the upper 60s to lower 70s resulted in capes of 1500 to 3000 j/kg across much of the region. Although shear was limited, stronger cells moving around 35 kts transported strong mid level winds to the surface resulting in numerous reports of wind damage. Stronger cells also produced quarter to golf ball size hail. One long lived cell in Kennebec County produced hail at least 3 inches in diameter.

Thunderstorm Wind in YORK, MAINE
From 09-JUN-11 15:20:00 to 09-JUN-11 15:23:00 (EST-5)
Location: KENNEBUNK
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm downed multiple trees and branches near Kennebunk.

Thunderstorm Wind in KENNEBEC, MAINE
From 09-JUN-11 16:00:00 to 09-JUN-11 16:05:00 (EST-5)
Location: HALLOWELL
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees in Hallowell.

Thunderstorm Wind in ANDROSCOGGIN, MAINE
From 09-JUN-11 16:05:00 to 09-JUN-11 16:08:00 (EST-5)
Location: LEWISTON
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed a tree on a house in Lewiston.

Thunderstorm Wind in OXFORD, MAINE
From 09-JUN-11 15:18:00 to 09-JUN-11 15:21:00 (EST-5)
Location: SOUTH WATERFORD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm downed a tree on Bear Pond Road knocking out power in South Waterford.

Thunderstorm Wind in ANDROSCOGGIN, MAINE
From 09-JUN-11 16:05:00 to 09-JUN-11 16:09:00 (EST-5)
Location: AUBURN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees and wires in Auburn.

Thunderstorm Wind in KENNEBEC, MAINE
From 09-JUN-11 16:10:00 to 09-JUN-11 16:15:00 (EST-5)
Location: GARDINER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm downed trees in Gardiner.

Thunderstorm Wind in KENNEBEC, MAINE
From 09-JUN-11 15:30:00 to 09-JUN-11 15:34:00 (EST-5)
Location: BELGRADE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm downed trees on Route 135 west of Belgrade.

Thunderstorm Wind in YORK, MAINE
From 09-JUN-11 15:38:00 to 09-JUN-11 15:42:00 (EST-5)
Location: SANFORD ARPT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

A severe thunderstorm downed Branches at the Sanford Airport.

Thunderstorm Wind in KENNEBEC, MAINE
From 09-JUN-11 17:11:00 to 09-JUN-11 17:14:00 (EST-5)
Location: WINTHROP
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees in Winthrop.

Thunderstorm Wind in KENNEBEC, MAINE
From 09-JUN-11 17:15:00 to 09-JUN-11 17:19:00 (EST-5)
Location: WINTHROP
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed a tree on Pond Road in Winthrop.

Thunderstorm Wind in YORK, MAINE
From 09-JUN-11 15:40:00 to 09-JUN-11 15:44:00 (EST-5)
Location: KENNEBUNK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm downed large trees on private property near Kennebunk.

Thunderstorm Wind in ANDROSCOGGIN, MAINE
From 09-JUN-11 16:05:00 to 09-JUN-11 16:08:00 (EST-5)
Location: AUBURN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm downed large tree limbs in Auburn.

Thunderstorm Wind in KENNEBEC, MAINE
From 09-JUN-11 16:15:00 to 09-JUN-11 16:17:00 (EST-5)
Location: RANDOLPH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees and wires on Clossen Street in Randolph.

Thunderstorm Wind in KENNEBEC, MAINE
From 09-JUN-11 16:20:00 to 09-JUN-11 16:24:00 (EST-5)
Location: FARMINGDALE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees in Farmingdale.

Thunderstorm Wind in KENNEBEC, MAINE
From 09-JUN-11 16:20:00 to 09-JUN-11 16:24:00 (EST-5)
Location: FARMINGDALE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees and wires on North Street in Farmingdale.

Hail in KENNEBEC, MAINE
From 09-JUN-11 16:00:00 to 09-JUN-11 16:06:00 (EST-5)
Location: HALLOWELL
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm produced 1.75 inch hail in Hallowell.

Hail in KENNEBEC, MAINE
From 09-JUN-11 16:10:00 to 09-JUN-11 16:14:00 (EST-5)
Location: RANDOLPH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced 1 inch hail in Randolph.

Hail in KENNEBEC, MAINE
From 09-JUN-11 16:18:00 to 09-JUN-11 16:21:00 (EST-5)
Location: BENTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced 1 inch hail near Benton.

Thunderstorm Wind in OXFORD, MAINE
From 09-JUN-11 14:40:00 to 09-JUN-11 14:44:00 (EST-5)
Location: FRYEBURG
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm downed branches on Route 5 east of Fryeburg.

Thunderstorm Wind in YORK, MAINE
From 09-JUN-11 15:38:00 to 09-JUN-11 15:42:00 (EST-5)
Location: SANFORD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm downed a tree at the Walmart in Sanford.