A cold front moved across northwestern Pennsylvania on May 29th causing showers and thunderstorms to develop.  A few of the stronger storms became severe.  There were many reports of large hail.

Hail in CRAWFORD, PENNSYLVANIA
From 29-MAY-12 09:51:00 to 29-MAY-12 09:51:00 (EST-5)
Location: CONNEAUTVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Post Office

Penny sized hail was observed.

Hail in CRAWFORD, PENNSYLVANIA
From 29-MAY-12 09:55:00 to 29-MAY-12 10:12:00 (EST-5)
Location: CONNEAUTVILLE
Magnitude: 1.75 
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail as large as golf balls was reported for several minutes.  Some vehicles were damaged by the hail.

Hail in ERIE, PENNSYLVANIA
From 29-MAY-12 10:30:00 to 29-MAY-12 10:30:00 (EST-5)
Location: MILL VLG
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny sized hail was observed.

Hail in CRAWFORD, PENNSYLVANIA
From 29-MAY-12 10:42:00 to 29-MAY-12 10:42:00 (EST-5)
Location: MEADVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter sized hail was observed.

Hail in CRAWFORD, PENNSYLVANIA
From 29-MAY-12 10:29:00 to 29-MAY-12 10:29:00 (EST-5)
Location: TURNERSVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter sized hail was observed.

Hail in CRAWFORD, PENNSYLVANIA
From 29-MAY-12 10:56:00 to 29-MAY-12 10:56:00 (EST-5)
Location: SPARTANSBURG
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Golf ball sized hail was reported.

Hail in ERIE, PENNSYLVANIA
From 29-MAY-12 10:47:00 to 29-MAY-12 11:01:00 (EST-5)
Location: CORRY
Magnitude: 1.75 
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

Golf ball size hail was reported.  Some minor damage to vehicles occurred.

Thunderstorm Wind in CRAWFORD, PENNSYLVANIA
From 29-MAY-12 10:33:00 to 29-MAY-12 10:33:00 (EST-5)
Location: CAMBRIDGE SPGS
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds downed a few large tree limbs.

Hail in CRAWFORD, PENNSYLVANIA
From 29-MAY-12 10:00:00 to 29-MAY-12 10:00:00 (EST-5)
Location: CONNEAUTVILLE
Magnitude: 1.50 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail the size of walnuts was reported.

Hail in ERIE, PENNSYLVANIA
From 29-MAY-12 10:44:00 to 29-MAY-12 10:44:00 (EST-5)
Location: WATERFORD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter sized hail was observed.

Hail in CRAWFORD, PENNSYLVANIA
From 29-MAY-12 10:49:00 to 29-MAY-12 10:49:00 (EST-5)
Location: GUYS MILLS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Penny sized hail was observed.

Hail in CRAWFORD, PENNSYLVANIA
From 29-MAY-12 11:27:00 to 29-MAY-12 11:27:00 (EST-5)
Location: TITUSVILLE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Nickel sized hail was observed.

Hail in CRAWFORD, PENNSYLVANIA
From 29-MAY-12 11:20:00 to 29-MAY-12 11:20:00 (EST-5)
Location: TITUSVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter sized hail was observed.