A strong cold front with shearing winds above the surface triggered supercell type thunderstorms that occurred across Eastern Pennsylvania mainly during the afternoon of the 22nd. Hail as large as tennis balls caused crop, siding and automobile damage and even damaged a Berks County mall. A U.S. Airways jet landed with a cracked windshield caused by large hail at Philadelphia International Airport.  The adverse late afternoon weather prevented takeoffs from Philadelphia International Airport until 630 p.m. EDT that evening. There was also some damaging winds, but was not as widespread as the large hail. Nearly 1,000 homes and businesses lost power in Berks County. No serious injuries were reported.

Hail in CHESTER, PENNSYLVANIA
From 22-MAY-14 15:14:00 to 22-MAY-14 15:14:00 (EST-5)
Location: WEST CHESTER
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Elsewhere in West Chester, a severe thunderstorm dropped ping pong ball size hail.

Hail in CHESTER, PENNSYLVANIA
From 22-MAY-14 16:02:00 to 22-MAY-14 16:02:00 (EST-5)
Location: EXTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A second thunderstorm dropped hail as large as pennies in Exton (West Whiteland Township).

Hail in CHESTER, PENNSYLVANIA
From 22-MAY-14 16:05:00 to 22-MAY-14 16:05:00 (EST-5)
Location: WEST CHESTER ARPT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Another severe thunderstorm dropped large hail around West Chester. This one dropped hail as large as ping pong balls in West Goshen Township.

Hail in CARBON, PENNSYLVANIA
From 22-MAY-14 13:45:00 to 22-MAY-14 13:45:00 (EST-5)
Location: CHRISTMANS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm dropped quarter size hail in Christmans.

Hail in DELAWARE, PENNSYLVANIA
From 22-MAY-14 15:30:00 to 22-MAY-14 15:30:00 (EST-5)
Location: BOOTHWYN
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A severe thunderstorm dropped half dollar size hail in Upper Chichester Township.

Hail in CHESTER, PENNSYLVANIA
From 22-MAY-14 16:00:00 to 22-MAY-14 16:00:00 (EST-5)
Location: LIONVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A severe thunderstorm dropped quarter size hail in Lionville (Uwchlan Township).

Hail in DELAWARE, PENNSYLVANIA
From 22-MAY-14 15:32:00 to 22-MAY-14 15:32:00 (EST-5)
Location: CHELSEA
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm dropped ping pong ball size hail in Garnet Valley (Bethel Township).

Hail in DELAWARE, PENNSYLVANIA
From 22-MAY-14 16:14:00 to 22-MAY-14 16:14:00 (EST-5)
Location: GLEN MILLS
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm dropped ping pong ball size hail in Glen Mills along the Concord and Middletown Township line.

Hail in BERKS, PENNSYLVANIA
From 22-MAY-14 14:10:00 to 22-MAY-14 14:12:00 (EST-5)
Location: BERKSHIRE HGTS
Magnitude: 1.75 
Reported by: Social Media

A severe thunderstorm dropped hail as large as golf balls across several locations in Reading. PennDOT had to plow the hail off of a couple of roadways in Berks County.

Hail in BERKS, PENNSYLVANIA
From 22-MAY-14 14:12:00 to 22-MAY-14 14:12:00 (EST-5)
Location: WYOMISSING HILLS
Magnitude: 2.50 
Reported by: Broadcast Media

A severe thunderstorm dropped hail as large as tennis balls in Wyomissing. Not only did it damage vehicles, but it also shattered several skylights at the Berkshire Mall.  Among the damaged vehicles were two police department cars that were no longer usable. No serious injuries were reported.

Hail in BERKS, PENNSYLVANIA
From 22-MAY-14 14:14:00 to 22-MAY-14 14:14:00 (EST-5)
Location: STONERSVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm dropped quarter size hail in Exeter Township.

Thunderstorm Wind in DELAWARE, PENNSYLVANIA
From 22-MAY-14 16:12:00 to 22-MAY-14 16:12:00 (EST-5)
Location: CHEYNEY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A severe thunderstorm knocked down large tree limbs and a tree in Cheyney (Thornbury Township).

Thunderstorm Wind in LEHIGH, PENNSYLVANIA
From 22-MAY-14 14:49:00 to 22-MAY-14 14:49:00 (EST-5)
Location: WEST CATASAUQUA
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A severe thunderstorm produced a 59 mph wind gust at the Lehigh Valley International Airport. About 1,000 homes and businesses lost power in Lehigh County.

Hail in BERKS, PENNSYLVANIA
From 22-MAY-14 14:12:00 to 22-MAY-14 14:12:00 (EST-5)
Location: ST LAWRENCE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny size hail fell in Saint Lawrence.

Hail in BERKS, PENNSYLVANIA
From 22-MAY-14 14:25:00 to 22-MAY-14 14:35:00 (EST-5)
Location: HAMBURG
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail as large as nickels occurred for ten minutes in Hamburg.

Hail in LEHIGH, PENNSYLVANIA
From 22-MAY-14 14:45:00 to 22-MAY-14 14:45:00 (EST-5)
Location: ALLENTOWN MUNI
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm dropped quarter size hail and also produced wind gusts to around 50 mph in Allentown.

Hail in MONROE, PENNSYLVANIA
From 22-MAY-14 20:25:00 to 22-MAY-14 20:25:00 (EST-5)
Location: MARSHALLS CREEK
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm dropped ping pong ball size hail in Marshalls Creek.

Hail in LEHIGH, PENNSYLVANIA
From 22-MAY-14 14:35:00 to 22-MAY-14 14:35:00 (EST-5)
Location: COPLAY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A severe thunderstorm dropped quarter size hail on MacArthur Road in Whitehall Township.

Thunderstorm Wind in CHESTER, PENNSYLVANIA
From 22-MAY-14 15:13:00 to 22-MAY-14 15:13:00 (EST-5)
Location: WEST CHESTER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm tore down wires along Franklin Street in West Chester.

Thunderstorm Wind in CHESTER, PENNSYLVANIA
From 22-MAY-14 15:13:00 to 22-MAY-14 15:14:00 (EST-5)
Location: CHATWOOD
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A severe thunderstorm tore down several large trees along South Concord Road from Amelia Drive to Westtown Road in West Chester.

Thunderstorm Wind in DELAWARE, PENNSYLVANIA
From 22-MAY-14 15:22:00 to 22-MAY-14 15:22:00 (EST-5)
Location: MARKHAM
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm knocked down a few trees along Southbound U.S. Route 1 near U.S. Route 322 in Concord Township.

Hail in CARBON, PENNSYLVANIA
From 22-MAY-14 13:55:00 to 22-MAY-14 13:55:00 (EST-5)
Location: STEMLERSVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny size hail covered the ground in Beltzville.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 22-MAY-14 15:05:00 to 22-MAY-14 15:05:00 (EST-5)
Location: PLEASANT VLY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm knocked down a couple of trees along Old Bethlehem Pike in Springfield Township.

Hail in LEHIGH, PENNSYLVANIA
From 22-MAY-14 14:46:00 to 22-MAY-14 14:46:00 (EST-5)
Location: BETHLEHEM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A severe thunderstorm also dropped quarter size hail at the intersection of U.S. Route 22 and Schoenersville Road in Allentown.

Hail in CHESTER, PENNSYLVANIA
From 22-MAY-14 15:03:00 to 22-MAY-14 15:03:00 (EST-5)
Location: EXTON
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm dropped half dollar size hail in Exton (West Whiteland Township).

Hail in CHESTER, PENNSYLVANIA
From 22-MAY-14 15:05:00 to 22-MAY-14 15:05:00 (EST-5)
Location: EXTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm dropped quarter size hail that covered the ground near East Boot Road in West Chester.