A squall line of showers and thunderstorms that preceded a cold front produced wind damage during the early morning on the 17th. The combination of the severe thunderstorms during the early morning and the gradient strong winds during the day of the 17th caused about 17,000 homes and businesses to lose power in southeastern Pennsylvania. All power was restored by Midnight EST on the 18th.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 17-NOV-10 03:33:00 to 17-NOV-10 03:34:00 (EST-5)
Location: NEWTOWN
Magnitude: 56.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Newspaper

A line of severe thunderstorms knocked down several trees in Newtown and Lower Makefield Townships. A farm in Lower Makefield Township was damaged by the thunderstorm winds. On Yardley-Newtown Road, the severe thunderstorm toppled trees, tore roofs off barns and destroyed outbuildings on one farm. The same severe thunderstorm tore shingles off the roof of a Hampton Inn on Stony Hill Road in Lower Makefield Township.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 17-NOV-10 02:55:00 to 17-NOV-10 02:55:00 (EST-5)
Location: POTTSTOWN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A severe thunderstorm knocked down a couple of trees and wires in Pottstown.

Thunderstorm Wind in PHILADELPHIA, PENNSYLVANIA
From 17-NOV-10 03:15:00 to 17-NOV-10 03:15:00 (EST-5)
Location: CRESCENTVILLE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

A severe thunderstorm knocked down a couple of trees along Roosevelt Boulevard within Philadelphia. The same severe thunderstorm knocked out windows in a factory in the northeastern part of the city.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 17-NOV-10 03:30:00 to 17-NOV-10 03:30:00 (EST-5)
Location: WOODBOURNE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A severe thunderstorm knocked down a couple of trees and wires along Maple Point Drive In Langhorne.

Thunderstorm Wind in LEHIGH, PENNSYLVANIA
From 17-NOV-10 02:55:00 to 17-NOV-10 02:55:00 (EST-5)
Location: CLAUSSVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm knocked down a couple of trees in Claussville (Lowhill Township).

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 17-NOV-10 03:00:00 to 17-NOV-10 03:01:00 (EST-5)
Location: IVY ROCK
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm knocked down a few trees and wires in Conshohocken Borough between Norsam and Country Club Roads. The same severe thunderstorm knocked down a few trees in Lower Merion Township.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 17-NOV-10 03:05:00 to 17-NOV-10 03:05:00 (EST-5)
Location: NARBERTH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm knocked down a few trees and wires in Narberth Borough between Gypsy Lane and Montgomery Avenue.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 17-NOV-10 03:15:00 to 17-NOV-10 03:15:00 (EST-5)
Location: ROCKLEDGE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm knocked down a couple of trees between U.S. Route 1 and Adams Avenue in  Rockledge (Cheltenham Township).

Thunderstorm Wind in NORTHAMPTON, PENNSYLVANIA
From 17-NOV-10 03:20:00 to 17-NOV-10 03:20:00 (EST-5)
Location: ULHERS
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced a wind gust of 59 mph in Forks Township.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 17-NOV-10 02:40:00 to 17-NOV-10 02:40:00 (EST-5)
Location: BOWERS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm knocked down a couple of trees in Bowers (Maxatawny Township), One downed tree also knocked down wires.

Thunderstorm Wind in LEHIGH, PENNSYLVANIA
From 17-NOV-10 02:55:00 to 17-NOV-10 02:55:00 (EST-5)
Location: MACUNGIE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm knocked down a couple of trees in Macungie.

Thunderstorm Wind in NORTHAMPTON, PENNSYLVANIA
From 17-NOV-10 03:05:00 to 17-NOV-10 03:05:00 (EST-5)
Location: SEEMSVILLE
Magnitude: 56.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: County Official

A severe thunderstorm caused major roof damage to one home on West Dannersville Road in Moore Township. About three-quarters of the roof was torn away. The rest of the roof was lifted in place. Pieces of the roof struck and damaged the garage, eaves and vehicle at a neighboring house. The front eaves of the home were blown away, insulation protruded from the roof and insulation, plywood and two by four rafters were found in nearby trees. A large pine tree on the property was knocked down as were a couple of other trees in the township.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 17-NOV-10 02:55:00 to 17-NOV-10 02:55:00 (EST-5)
Location: AUDUBON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm knocked down a couple of trees in Lower Providence Township. One downed tree completely blocked Sunnyside Avenue between 1st and 2nd Streets.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 17-NOV-10 03:25:00 to 17-NOV-10 03:25:00 (EST-5)
Location: TREVOSE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm knocked down a couple of trees between Henry Avenue and Bridgetown Pike in Feasterville (Lower Southampton Township).

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 17-NOV-10 03:10:00 to 17-NOV-10 03:10:00 (EST-5)
Location: HOPPENVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A severe thunderstorm knocked down a couple of trees in Marlborough Township.