A lee side trof combined with an unseasonably warm air mass to develop a cluster of strong to severe thunderstorms in Eastern Pennsylvania during the late afternoon of the 27th. While the thunderstorms started to weaken as they approached Philadelphia and the Delaware River, their gust fronts still produced damaging winds. About 20,000 homes and businesses lost power, with the greatest impact in Montgomery County.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 27-MAY-14 16:55:00 to 27-MAY-14 16:55:00 (EST-5)
Location: FT WASHINGTON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A severe thunderstorm knocked down a couple of trees and wires across a roadway in Fort Washington (Upper Dublin Township). A wind gust of 50 mph were measured in the Maple Glen section of the township.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 27-MAY-14 15:45:00 to 27-MAY-14 15:45:00 (EST-5)
Location: BETHEL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm knocked down a few trees and wires in Bethel and Tulpehocken Townships.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 27-MAY-14 16:00:00 to 27-MAY-14 16:00:00 (EST-5)
Location: READING
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm knocked down a couple of trees within Reading. One large tree was snapped at its base and landed on a vehicle on Oley Street. Several wires were also knocked down. Another nearby utility pole was snapped in half. Wind gusts of 54 mph and 53 mph were recorded at the Reading Regional Airport and Lenhartsville respectively.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 27-MAY-14 16:25:00 to 27-MAY-14 16:25:00 (EST-5)
Location: SANATOGA
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm knocked down numerous trees and wires in Pottsgrove Township.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 27-MAY-14 16:40:00 to 27-MAY-14 16:40:00 (EST-5)
Location: LEDERACH
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm knocked down several trees and power lines in Harleysville (Lower Salford Township).  A downed power line on Groff Mill Road damaged a home.  Another downed power line was starting small fires.  A wind gust of 54 mph was measured at nearby Skippack Township by a Skywarn spotter.

Thunderstorm Wind in DELAWARE, PENNSYLVANIA
From 27-MAY-14 16:50:00 to 27-MAY-14 16:50:00 (EST-5)
Location: WAYNE
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Social Media

The gust front from a severe thunderstorm knocked down trees and wires in Radnor Township near the Chester County line. The SEPTA Regional Rail Paoli/Thornadale line was terminated at Radnor until some of the downed trees could be cleared off the tracks.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 27-MAY-14 16:32:00 to 27-MAY-14 16:32:00 (EST-5)
Location: LIMERICK
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm knocked down a large tree onto and damaged a home in Limerick Township. No one was home at the time and no injuries were reported.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 27-MAY-14 16:45:00 to 27-MAY-14 16:45:00 (EST-5)
Location: PERKASIE PENRIDGE AR
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The gust front from a severe thunderstorm knocked down a large tree at the intersection of Schoolhouse and Three Mile Run Road in East Rockhill Township.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 27-MAY-14 17:04:00 to 27-MAY-14 17:04:00 (EST-5)
Location: CHELTENHAM
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Newspaper

A severe thunderstorm snapped a pole in half in Cheltenham Township.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 27-MAY-14 17:02:00 to 27-MAY-14 17:02:00 (EST-5)
Location: GLENSIDE
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Newspaper

A severe thunderstorm knocked down several trees in Abington Township. Trees were knocked down on Fog Hollow Road and Washington Lane. Crews had to be dispatched to clear downed trees and wires from roadways.

Thunderstorm Wind in PHILADELPHIA, PENNSYLVANIA
From 27-MAY-14 17:02:00 to 27-MAY-14 17:02:00 (EST-5)
Location: FOX CHASE
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm knocked down a couple of trees and wires in the Fox Chase section of Philadelphia.

Thunderstorm Wind in PHILADELPHIA, PENNSYLVANIA
From 27-MAY-14 17:06:00 to 27-MAY-14 17:06:00 (EST-5)
Location: (PNE)NE ARPT PHILADE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm also knocked down a few trees and wires in Northeast Philadelphia and caused power outages. A wind gust of 49 mph was measured at nearby Northeast Philadelphia Airport.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 27-MAY-14 16:50:00 to 27-MAY-14 16:50:00 (EST-5)
Location: CHALFONT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

The gust front from a severe thunderstorm knocked down a large tree onto power lines in Chalfont Borough.

Thunderstorm Wind in PHILADELPHIA, PENNSYLVANIA
From 27-MAY-14 17:03:00 to 27-MAY-14 17:03:00 (EST-5)
Location: CHESTNUT HILL
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm knocked down a few trees along the Bethlehem Pike in the Chestnut Hill section of Philadelphia.

Thunderstorm Wind in PHILADELPHIA, PENNSYLVANIA
From 27-MAY-14 17:05:00 to 27-MAY-14 17:05:00 (EST-5)
Location: BUSTLETON
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm knocked down a couple of trees along Roosevelt Boulevard (U.S. Route 1) in Philadelphia. One downed tree damaged a truck. A tree was also knocked down on nearby Welsh Road.

Thunderstorm Wind in PHILADELPHIA, PENNSYLVANIA
From 27-MAY-14 17:00:00 to 27-MAY-14 17:00:00 (EST-5)
Location: ROXBOROUGH
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm knocked down a large tree limb that damaged two vehicles in the Roxborough section of Philadelphia.