A surface cold front tracking southeast, combined with good height falls aloft and jet exit region, set off a broken line of strong storms and supercells across the county warning area. Some storms formed on or were enhanced by the sea breeze boundary. 1 inch hail was common with several storms, especially just south of Portland, and in the Augusta area. A few storms also produced wind damage.

Hail in OXFORD, MAINE
From 18-JUN-11 16:34:00 to 18-JUN-11 16:38:00 (EST-5)
Location: OXFORD KIMBALLS ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced 1 inch hail near Oxford.

Hail in CUMBERLAND, MAINE
From 18-JUN-11 16:41:00 to 18-JUN-11 16:45:00 (EST-5)
Location: GORHAM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced 1 inch hail near Gorham.

Hail in CUMBERLAND, MAINE
From 18-JUN-11 16:46:00 to 18-JUN-11 16:50:00 (EST-5)
Location: GORHAM
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm produced 0.75 inch hail near Gorham.

Hail in ANDROSCOGGIN, MAINE
From 18-JUN-11 16:48:00 to 18-JUN-11 16:51:00 (EST-5)
Location: AUBURN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced 1 inch hail in Auburn.

Hail in KENNEBEC, MAINE
From 18-JUN-11 16:59:00 to 18-JUN-11 17:04:00 (EST-5)
Location: HALLOWELL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced 1 inch hail near Hallowell.

Hail in CUMBERLAND, MAINE
From 18-JUN-11 17:01:00 to 18-JUN-11 17:05:00 (EST-5)
Location: SOUTH PORTLAND
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced 1 inch hail in South Portland.

Hail in SOMERSET, MAINE
From 18-JUN-11 15:25:00 to 18-JUN-11 15:28:00 (EST-5)
Location: SMITHFIELD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm covered the ground with 1 inch hail on Route 137 near Smithfield.

Hail in CUMBERLAND, MAINE
From 18-JUN-11 16:55:00 to 18-JUN-11 16:58:00 (EST-5)
Location: SCARBOROUGH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm produced 1 inch hail in Scarborough on the South Portland town line.

Hail in CUMBERLAND, MAINE
From 18-JUN-11 17:00:00 to 18-JUN-11 17:06:00 (EST-5)
Location: CAPE COTTAGE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A severe thunderstorm produced 1 inch hail in South Portland.

Hail in KENNEBEC, MAINE
From 18-JUN-11 16:50:00 to 18-JUN-11 16:53:00 (EST-5)
Location: WINDSOR
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced 1 inch hail near Windsor.

Hail in KENNEBEC, MAINE
From 18-JUN-11 16:53:00 to 18-JUN-11 16:56:00 (EST-5)
Location: HALLOWELL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced 1 inch hail near Hallowell.

Hail in CUMBERLAND, MAINE
From 18-JUN-11 16:45:00 to 18-JUN-11 16:50:00 (EST-5)
Location: WESTBROOK
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm produced 0.88 inch hail in Westbrook.

Hail in KENNEBEC, MAINE
From 18-JUN-11 16:55:00 to 18-JUN-11 16:59:00 (EST-5)
Location: AUGUSTA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced 1 inch hail in Augusta.

Hail in CUMBERLAND, MAINE
From 18-JUN-11 16:50:00 to 18-JUN-11 16:54:00 (EST-5)
Location: SOUTH PORTLAND
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced 1.75 inch hail in South Portland.

Hail in KENNEBEC, MAINE
From 18-JUN-11 16:45:00 to 18-JUN-11 16:48:00 (EST-5)
Location: READFIELD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced 1 inch hail in Readfield..

Hail in CUMBERLAND, MAINE
From 18-JUN-11 17:25:00 to 18-JUN-11 17:28:00 (EST-5)
Location: BRUNSWICK
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm produced 0.88 inch hail in Brunswick.

Hail in YORK, MAINE
From 18-JUN-11 17:30:00 to 18-JUN-11 17:33:00 (EST-5)
Location: WELLS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm produced 0.88 inch hail in Wells.

Thunderstorm Wind in SOMERSET, MAINE
From 18-JUN-11 15:35:00 to 18-JUN-11 15:39:00 (EST-5)
Location: SMITHFIELD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees in Smithfield.

Thunderstorm Wind in SOMERSET, MAINE
From 18-JUN-11 15:10:00 to 18-JUN-11 15:14:00 (EST-5)
Location: ANSON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees in Anson.

Hail in FRANKLIN, MAINE
From 18-JUN-11 15:05:00 to 18-JUN-11 15:09:00 (EST-5)
Location: NEW VINEYARD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm produced 0.88 inch hail in New Vineyard.

Thunderstorm Wind in ANDROSCOGGIN, MAINE
From 18-JUN-11 17:10:00 to 18-JUN-11 17:18:00 (EST-5)
Location: DURHAM
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees and wires in Durham.

Thunderstorm Wind in OXFORD, MAINE
From 18-JUN-11 16:16:00 to 18-JUN-11 16:21:00 (EST-5)
Location: NORWAY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm downed trees in Norway.

Thunderstorm Wind in ANDROSCOGGIN, MAINE
From 18-JUN-11 16:46:00 to 18-JUN-11 16:51:00 (EST-5)
Location: POLAND
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm brought down large limbs in Poland.

Hail in SOMERSET, MAINE
From 18-JUN-11 15:40:00 to 18-JUN-11 15:43:00 (EST-5)
Location: FAIRFIELD
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm produced 0.75 inch hail in Fairfield.

Hail in KENNEBEC, MAINE
From 18-JUN-11 16:14:00 to 18-JUN-11 16:18:00 (EST-5)
Location: NORTH SIDNEY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced 1.25 inch hail in North Sidney.

Hail in KENNEBEC, MAINE
From 18-JUN-11 16:14:00 to 18-JUN-11 16:18:00 (EST-5)
Location: (AUG)AUGUSTA STATE A
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm produced 0.75 inch hail in Augusta.