A cold front moved through Southern New England creating enough lift to produce showers and thunderstorms.  A cold pool aloft increased instability and the probability of large hail.  Hail up to the size of ping pong balls was reported with these storms.

Hail in HAMPDEN, MASSACHUSETTS
From 01-AUG-11 13:42:00 to 01-AUG-11 13:42:00 (EST-5)
Location: MONSON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Penny size hail fell on Cote Road.

Hail in FRANKLIN, MASSACHUSETTS
From 01-AUG-11 13:55:00 to 01-AUG-11 13:55:00 (EST-5)
Location: SHUTESBURY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HAMPSHIRE, MASSACHUSETTS
From 01-AUG-11 14:45:00 to 01-AUG-11 14:45:00 (EST-5)
Location: BELCHERTOWN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in FRANKLIN, MASSACHUSETTS
From 01-AUG-11 14:50:00 to 01-AUG-11 14:50:00 (EST-5)
Location: EAST NORTHFIELD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FRANKLIN, MASSACHUSETTS
From 01-AUG-11 15:33:00 to 01-AUG-11 15:33:00 (EST-5)
Location: ERVING
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in FRANKLIN, MASSACHUSETTS
From 01-AUG-11 15:48:00 to 01-AUG-11 15:48:00 (EST-5)
Location: LEVERETT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in FRANKLIN, MASSACHUSETTS
From 01-AUG-11 15:55:00 to 01-AUG-11 15:55:00 (EST-5)
Location: LEVERETT
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A tree was downed onto power lines by thunderstorm winds.

Hail in FRANKLIN, MASSACHUSETTS
From 01-AUG-11 16:15:00 to 01-AUG-11 16:15:00 (EST-5)
Location: SHUTESBURY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HAMPSHIRE, MASSACHUSETTS
From 01-AUG-11 12:15:00 to 01-AUG-11 12:15:00 (EST-5)
Location: AMHERST
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HAMPSHIRE, MASSACHUSETTS
From 01-AUG-11 12:28:00 to 01-AUG-11 12:28:00 (EST-5)
Location: AMHERST
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in HAMPSHIRE, MASSACHUSETTS
From 01-AUG-11 12:37:00 to 01-AUG-11 12:37:00 (EST-5)
Location: AMHERST
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in HAMPSHIRE, MASSACHUSETTS
From 01-AUG-11 12:48:00 to 01-AUG-11 12:48:00 (EST-5)
Location: AMHERST
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in HAMPSHIRE, MASSACHUSETTS
From 01-AUG-11 13:05:00 to 01-AUG-11 13:05:00 (EST-5)
Location: BELCHERTOWN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in HAMPDEN, MASSACHUSETTS
From 01-AUG-11 13:09:00 to 01-AUG-11 13:09:00 (EST-5)
Location: LONGMEADOW
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in HAMPSHIRE, MASSACHUSETTS
From 01-AUG-11 13:11:00 to 01-AUG-11 13:11:00 (EST-5)
Location: BELCHERTOWN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in HAMPDEN, MASSACHUSETTS
From 01-AUG-11 13:16:00 to 01-AUG-11 13:16:00 (EST-5)
Location: LONGMEADOW
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in HAMPDEN, MASSACHUSETTS
From 01-AUG-11 13:25:00 to 01-AUG-11 13:25:00 (EST-5)
Location: EAST SPRINGFIELD
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in HAMPDEN, MASSACHUSETTS
From 01-AUG-11 13:25:00 to 01-AUG-11 13:25:00 (EST-5)
Location: LUDLOW
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Golfball size hail fell on Moore Street.

Hail in HAMPDEN, MASSACHUSETTS
From 01-AUG-11 13:31:00 to 01-AUG-11 13:31:00 (EST-5)
Location: EAST LONGMEADOW
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in FRANKLIN, MASSACHUSETTS
From 01-AUG-11 13:37:00 to 01-AUG-11 13:37:00 (EST-5)
Location: EAST NORTHFIELD
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and power lines along Route 142 were downed by thunderstorm winds.

Hail in HAMPDEN, MASSACHUSETTS
From 01-AUG-11 13:38:00 to 01-AUG-11 13:38:00 (EST-5)
Location: NORTH WILBRAHAM
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in HAMPDEN, MASSACHUSETTS
From 01-AUG-11 13:13:00 to 01-AUG-11 13:13:00 (EST-5)
Location: EAST SPRINGFIELD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio