An intense, north-south oriented squall line accompanied a strong cold front across central and eastern Pennsylvania during the late afternoon and evening hours. The strongly forced low-topped convection (with little to no lightning) developed in an environment characterized by weak instability and high shear. Mini bowing segments/LEWPs embedded within the squall line produced numerous areas of wind damage across the mid-lower Susquehanna Valley.

Thunderstorm Wind in UNION, PENNSYLVANIA
From 19-APR-13 17:09:00 to 19-APR-13 17:09:00 (EST-5)
Location: MIFFLINBURG
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees and utility wires in Mifflintown.

Thunderstorm Wind in SNYDER, PENNSYLVANIA
From 19-APR-13 17:25:00 to 19-APR-13 17:25:00 (EST-5)
Location: SELINSGROVE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees in Selinsgrove.

Thunderstorm Wind in LYCOMING, PENNSYLVANIA
From 19-APR-13 17:30:00 to 19-APR-13 17:30:00 (EST-5)
Location: PICTURE ROCKS
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds estimated near 60 mph knocked down trees and utility wires in Picture Rocks.

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 19-APR-13 17:37:00 to 19-APR-13 17:37:00 (EST-5)
Location: SNYDERTOWN
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees and utility wires between Sunbury and Elysburg.

Thunderstorm Wind in MONTOUR, PENNSYLVANIA
From 19-APR-13 17:41:00 to 19-APR-13 17:41:00 (EST-5)
Location: DANVILLE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees in Danville.

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 19-APR-13 17:41:00 to 19-APR-13 17:41:00 (EST-5)
Location: SOUTH DANVILLE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees in Riverside.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 19-APR-13 17:46:00 to 19-APR-13 17:46:00 (EST-5)
Location: DOVER
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees in Dover.

Thunderstorm Wind in COLUMBIA, PENNSYLVANIA
From 19-APR-13 17:50:00 to 19-APR-13 17:50:00 (EST-5)
Location: MORDANSVILLE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees across Mt. Pleasant Township near Millertown.

Thunderstorm Wind in COLUMBIA, PENNSYLVANIA
From 19-APR-13 17:58:00 to 19-APR-13 17:58:00 (EST-5)
Location: FORKS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds estimated near 60 mph knocked down numerous large tree branches in Asbury.

Thunderstorm Wind in SULLIVAN, PENNSYLVANIA
From 19-APR-13 17:59:00 to 19-APR-13 17:59:00 (EST-5)
Location: DUSHORE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds estimated near 60 mph blew a roof off an old barn just east of Dushore in Cherry Township.

Thunderstorm Wind in LEBANON, PENNSYLVANIA
From 19-APR-13 17:55:00 to 19-APR-13 17:55:00 (EST-5)
Location: BORDNERSVILLE
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Fort Indiantown Gap Army Airport (KMUI) ASOS recorded a peak thunderstorm wind gust of 59 mph at 1954 EDT.

Thunderstorm Wind in CENTRE, PENNSYLVANIA
From 19-APR-13 15:47:00 to 19-APR-13 15:47:00 (EST-5)
Location: STATE COLLEGE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: NWS Employee

Thunderstorm winds estimated near 60 mph knocked down trees in State College.

Thunderstorm Wind in SCHUYLKILL, PENNSYLVANIA
From 19-APR-13 18:05:00 to 19-APR-13 18:05:00 (EST-5)
Location: TREMONT
Magnitude: 74.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

An official NWS Storm Survey was conducted in Tremont Borough. It was determined that a microburst or straight-line thunderstorm winds estimated near 85 mph created a swath of sporadic damage along a 1-mile long stretch from East Line Street near Good Spring Creek to near the intersection of SR 125/209. The damage included about 20 homes with roof and siding damage and approximately 15 trees down.

Thunderstorm Wind in LYCOMING, PENNSYLVANIA
From 19-APR-13 17:29:00 to 19-APR-13 17:29:00 (EST-5)
Location: MUNCY
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds estimated near 70 mph knocked down trees and utility wires in Muncy. The severe thunderstorm winds also produced minor to moderate structural damage.

Thunderstorm Wind in DAUPHIN, PENNSYLVANIA
From 19-APR-13 17:37:00 to 19-APR-13 17:37:00 (EST-5)
Location: ELIZABETHVILLE
Magnitude: 70.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A National Weather Service storm survey team concluded that straight line winds affected a small area near Elizabethville along Route 209. Several homes sustained roof damage, and a small farm out-building collapsed from the wind. A fiberglass horse was removed from a business and deposited on Route 209. Several utility poles and trees were also knocked down in the area.

Thunderstorm Wind in COLUMBIA, PENNSYLVANIA
From 19-APR-13 17:55:00 to 19-APR-13 17:55:00 (EST-5)
Location: ORANGEVILLE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds estimated near 60 mph knocked down 8 large pine trees in Orangeville.