An upper air disturbance combined with  a hot and humid air mass to produce strong to severe thunderstorms across Eastern Pennsylvania during the second half of the afternoon and early evening on the 24th. In addition to locally damaging winds, lightning strikes caused one injury and damaged several homes. There were numerous reports of hail with the thunderstorms as the freezing level aloft was relatively low in height above the ground. Most of the hail was small (half an inch or less in diameter).

Hail in NORTHAMPTON, PENNSYLVANIA
From 24-JUN-13 16:18:00 to 24-JUN-13 16:18:00 (EST-5)
Location: NAZARETH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm dropped quarter size hail in Nazareth.

Hail in NORTHAMPTON, PENNSYLVANIA
From 24-JUN-13 16:20:00 to 24-JUN-13 16:20:00 (EST-5)
Location: ULHERS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A thunderstorm dropped penny size hail in Forks Township.

Thunderstorm Wind in CHESTER, PENNSYLVANIA
From 24-JUN-13 17:45:00 to 24-JUN-13 17:45:00 (EST-5)
Location: DOWNINGTOWN
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

A severe thunderstorm knocked down numerous trees within Downingtown. Approximately 30 to 35 streets had either fallen trees, tree limbs and or wires on them including West Pennsylvania Avenue and Hunt Street. Nearly 6,000 homes and businesses lost power in Chester County as the thunderstorms rolled through and Downingtown had nearly a third of them. Second was Caln Township.

Lightning in DELAWARE, PENNSYLVANIA
From 24-JUN-13 13:47:00 to 24-JUN-13 13:47:00 (EST-5)
Location: ELAM
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Newspaper

A lightning strike and ensuing electrical surge started a couple of small basement fires in a home on Half Mile Post in Bethel Township.

Thunderstorm Wind in DELAWARE, PENNSYLVANIA
From 24-JUN-13 13:47:00 to 24-JUN-13 13:47:00 (EST-5)
Location: ELAM
Magnitude: 52.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Newspaper

A severe thunderstorm knocked down or snapped several trees along Stateline Road in Bethel Township. Some of the trees were over 100 years old. One downed tree damaged a home on the road, but no injuries were reported.

Lightning in DELAWARE, PENNSYLVANIA
From 24-JUN-13 13:30:00 to 24-JUN-13 13:30:00 (EST-5)
Location: MOORE
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Newspaper

A lightning strike and ensuing fire damaged a home on Lindsay Street in Ridley Park. Lightning struck and started a fire in the basement and also traveled along the electrical wiring within the house.  The furniture, electronics and clothing were all damaged within the home. The unharmed family was expected to be displaced for about six months.

Thunderstorm Wind in DELAWARE, PENNSYLVANIA
From 24-JUN-13 13:08:00 to 24-JUN-13 13:08:00 (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 several trees along and around Spring Valley Road in Glen Mills.  One woman had to be rescued from her minivan, when trees and wires were knocked down around her vehicle. Small hail also occurred during the severe thunderstorm.

Lightning in DELAWARE, PENNSYLVANIA
From 24-JUN-13 13:25:00 to 24-JUN-13 13:25:00 (EST-5)
Location: RUTLEDGE
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A lightning strike damaged a home in Swarthmore.

Lightning in DELAWARE, PENNSYLVANIA
From 24-JUN-13 13:26:00 to 24-JUN-13 13:26:00 (EST-5)
Location: SANDY BANK
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A lightning strike damaged a home in Upper Providence Township.

Lightning in DELAWARE, PENNSYLVANIA
From 24-JUN-13 13:17:00 to 24-JUN-13 13:17:00 (EST-5)
Location: ASTON MILLS
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A lightning strike damaged a home in Aston Township.

Lightning in DELAWARE, PENNSYLVANIA
From 24-JUN-13 13:15:00 to 24-JUN-13 13:15:00 (EST-5)
Location: MARKHAM
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A man was injured by a lightning strike while working on the Glen Mills Reform School's baseball field in Concord Township.  From 2 p.m. EDT to 3 p.m. EDT there were over 1,000 cloud-to-ground lightning strikes in the local Philadelphia area.

Thunderstorm Wind in CHESTER, PENNSYLVANIA
From 24-JUN-13 12:55:00 to 24-JUN-13 12:55:00 (EST-5)
Location: GLEN ROY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm knocked down numerous trees along Pennsylvania State Route 272 and Kirks Mill Road in West Nottingham Township.

Thunderstorm Wind in CHESTER, PENNSYLVANIA
From 24-JUN-13 12:56:00 to 24-JUN-13 12:56:00 (EST-5)
Location: LENAPE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm knocked down a tree near Creek Road and Pennsylvania State Route 52 in Birmingham Township.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 24-JUN-13 16:37:00 to 24-JUN-13 16:45:00 (EST-5)
Location: PLEASANT VLY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm caused wind damage across a couple of townships in Upper Bucks County.  In Springfield Township, trees and wires were knocked down on Old Bethlehem, Hickory, Slifer Valley and Blue Church Roads. In Durham Township, trees and wires were knocked down along Gallows Hill and Lehnenberg Roads. In Haycock Township, a sailboat was overturned on Lake Nockamixon, but no injuries were reported.

Thunderstorm Wind in NORTHAMPTON, PENNSYLVANIA
From 24-JUN-13 16:19:00 to 24-JUN-13 16:20:00 (EST-5)
Location: NAZARETH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm knocked down trees, poles  and wires across a couple of roads in Nazareth. Trees were reported knocked down on Graceland Avenue and a downed tree damaged a vehicle (no injuries were reported) on Myers Street.