An upper air disturbance passing over a quasi-stationary front that helped pool a warm and moist air mass triggered thunderstorms across central and southern New Jersey during the afternoon of the 24th. The  thunderstorms then expanded into the Philadelphia northern suburbs and the Lehigh Valley and Poconos.  While a combination of large hail and damaging winds occurred with the severe thunderstorms, there were over a dozen other reports of smaller hail with the thunderstorms.

Thunderstorm Wind in LEHIGH, PENNSYLVANIA
From 24-MAY-12 14:40:00 to 24-MAY-12 14:40:00 (EST-5)
Location: CATASAUQUA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm knocked down large tree limbs and wires in Catasauqua.

Thunderstorm Wind in LEHIGH, PENNSYLVANIA
From 24-MAY-12 14:40:00 to 24-MAY-12 14:45:00 (EST-5)
Location: GUTH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm knocked down one large tree in Whitehall Township and several large tree limbs and wires in South Whitehall and Whitehall Townships.

Hail in BUCKS, PENNSYLVANIA
From 24-MAY-12 13:50:00 to 24-MAY-12 13:50:00 (EST-5)
Location: CHALFONT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm dropped quarter size hail in Chalfont.

Hail in BUCKS, PENNSYLVANIA
From 24-MAY-12 14:03:00 to 24-MAY-12 14:03:00 (EST-5)
Location: ARGUS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm also dropped quarter size hail in West Rockhill Township.

Hail in BUCKS, PENNSYLVANIA
From 24-MAY-12 14:12:00 to 24-MAY-12 14:12:00 (EST-5)
Location: QUAKERTOWN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm dropped nickel size hail in Quakertown.

Hail in LEHIGH, PENNSYLVANIA
From 24-MAY-12 14:30:00 to 24-MAY-12 14:30:00 (EST-5)
Location: EMMAUS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm dropped penny size hail in Emmaus.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 24-MAY-12 13:29:00 to 24-MAY-12 13:29:00 (EST-5)
Location: JAMISON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm knocked down large tree limbs and wires in Jamison in Warwick Township.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 24-MAY-12 13:57:00 to 24-MAY-12 13:57:00 (EST-5)
Location: HILLTOWN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm knocked down a few trees in Hilltown Township.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 24-MAY-12 14:03:00 to 24-MAY-12 14:03:00 (EST-5)
Location: SELLERSVILLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm knocked down a few trees in West Rockhill Township.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 24-MAY-12 14:00:00 to 24-MAY-12 14:00:00 (EST-5)
Location: PERKASIE
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced wind gusts of 60 mph in Perkasie.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 24-MAY-12 13:50:00 to 24-MAY-12 13:50:00 (EST-5)
Location: CHALFONT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm knocked down large tree limbs in Chalfont.