An unusually deep upper level low pressure system swinging into the northeast on the 16th of August resulted in low freezing levels and weak upper flow. A strong vorticity maximum advecting into the area combined with marginal cape indices to fire off the initial convection. Terrain and potent outflow boundaries organized these initial cells into longer lived pulse type storms which quickly became numerous throughout the forecast area. Large hail was the main result of these storms with numerous reports of hail 1 inch or larger. Some flash flooding was reported due to multiple slow moving storms in Androscoggin County.

Hail in CUMBERLAND, MAINE
From 16-AUG-08 14:38:00 to 16-AUG-08 14:42:00 (EST-5)
Location: NEWHALL
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced 1.25 inch hail 4 miles north of Gorham near Newhall.

Hail in OXFORD, MAINE
From 16-AUG-08 12:28:00 to 16-AUG-08 12:33:00 (EST-5)
Location: UPTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced .75 inch hail in Upton.

Hail in CUMBERLAND, MAINE
From 16-AUG-08 14:24:00 to 16-AUG-08 14:29:00 (EST-5)
Location: NORTH WINDHAM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced multiple reports of 1 inch hail in North Windham.

Hail in YORK, MAINE
From 16-AUG-08 14:30:00 to 16-AUG-08 14:37:00 (EST-5)
Location: WELLS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced .75 inch hail in Wells.

Hail in SOMERSET, MAINE
From 16-AUG-08 14:15:00 to 16-AUG-08 14:18:00 (EST-5)
Location: ANSON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced .88 inch hail 4 miles west of Anson.

Hail in CUMBERLAND, MAINE
From 16-AUG-08 14:56:00 to 16-AUG-08 14:59:00 (EST-5)
Location: NEWHALL
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced numerous reports of .88 inch hail in South Windham.

Hail in YORK, MAINE
From 16-AUG-08 15:05:00 to 16-AUG-08 15:10:00 (EST-5)
Location: SHAPLEIGH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced multiple reports of 1 inch hail in Shapleigh.

Hail in SOMERSET, MAINE
From 16-AUG-08 15:16:00 to 16-AUG-08 15:23:00 (EST-5)
Location: MERCER BEECH FLD ARP
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced .75 inch hail near Mercer.

Hail in CUMBERLAND, MAINE
From 16-AUG-08 15:29:00 to 16-AUG-08 15:32:00 (EST-5)
Location: NEWHALL
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced .88 inch hail in South Windham.

Hail in ANDROSCOGGIN, MAINE
From 16-AUG-08 14:45:00 to 16-AUG-08 14:49:00 (EST-5)
Location: MECHANIC FALLS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced 1.75 inch hail just to the north of Mechanic Falls. Golf ball size hail was also reported nearby in West Minot.

Hail in CUMBERLAND, MAINE
From 16-AUG-08 15:36:00 to 16-AUG-08 15:42:00 (EST-5)
Location: GORHAM
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced 1.75 inch hail in Gorham with multiple reports of penny to golf ball sized hail nearby.

Hail in CUMBERLAND, MAINE
From 16-AUG-08 16:01:00 to 16-AUG-08 16:07:00 (EST-5)
Location: WEST SCARBOROUGH
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced .75 inch hail in West Scarborough.

Hail in ANDROSCOGGIN, MAINE
From 16-AUG-08 14:45:00 to 16-AUG-08 14:49:00 (EST-5)
Location: WEST MINOT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced 1.75 inch hail in West Minot.

Hail in FRANKLIN, MAINE
From 16-AUG-08 14:48:00 to 16-AUG-08 14:52:00 (EST-5)
Location: NEW SHARON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced 1 inch hail in New Sharon.

Hail in YORK, MAINE
From 16-AUG-08 14:52:00 to 16-AUG-08 14:57:00 (EST-5)
Location: WEST LEBANON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced numerous reports of 1 inch hail in West Lebanon.