A deep low pressure system tracked northeast through the Ohio Valley and into the eastern Great Lakes on Wednesday, February 24, 2016. A squall line developed ahead of the main cold front near the axis of a 70+KT low-level jet, which contributed to a high shear/low CAPE environment. The squall line produced 50-65 mph wind gusts and subsequent thunderstorm wind damage across portions of the lower Susquehanna Valley.

Thunderstorm Wind in PERRY, PENNSYLVANIA
From 24-FEB-16 17:40:00 to 24-FEB-16 17:40:00 (EST-5)
Location: LANDISBURG
Magnitude: 56.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A squall line with peak thunderstorm winds around 65 mph produced straight-line wind damage near Landisburg. The thunderstorm winds knocked down dozens of large tree limbs and uprooted several trees along Route 74 near the bridge over Shermans Creek. A shed was destroyed by the wind and shingles were torn off of a roof. The trees fell in a unidirectional pattern, aligned from southwest to northeast. No injuries were reported.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 24-FEB-16 18:10:00 to 24-FEB-16 18:10:00 (EST-5)
Location: WELLSVILLE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down numerous trees across the county.

Thunderstorm Wind in DAUPHIN, PENNSYLVANIA
From 24-FEB-16 18:24:00 to 24-FEB-16 18:24:00 (EST-5)
Location: PROGRESS PENBROOK
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down tree across exit ramp at the intersection of  I-83 and Union Deposit Rd.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 24-FEB-16 18:24:00 to 24-FEB-16 18:24:00 (EST-5)
Location: NASHVILLE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: State Official

Thunderstorm winds estimated near 60 mph knocked down a tree onto a house along Route 116 in Jackson Township.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 24-FEB-16 18:30:00 to 24-FEB-16 18:30:00 (EST-5)
Location: DALLASTOWN
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees near Dallastown.

Thunderstorm Wind in LYCOMING, PENNSYLVANIA
From 24-FEB-16 18:35:00 to 24-FEB-16 18:35:00 (EST-5)
Location: HUGHESVILLE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down several trees in Hughesville.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 24-FEB-16 18:35:00 to 24-FEB-16 18:35:00 (EST-5)
Location: WAGO JCT
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph blew a roof off of a barn in East Manchester Township.

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 24-FEB-16 18:45:00 to 24-FEB-16 18:45:00 (EST-5)
Location: FLORIN
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph produced structural damage in Mount Joy Township and Elizabethtown borough.

Thunderstorm Wind in LEBANON, PENNSYLVANIA
From 24-FEB-16 19:05:00 to 24-FEB-16 19:05:00 (EST-5)
Location: GREBLE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm winds estimated near 60 mph knocked down telephone poles along Houtzdale Road.

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 24-FEB-16 19:18:00 to 24-FEB-16 19:18:00 (EST-5)
Location: HAMILTON PARK
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down numerous trees across the county.

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 24-FEB-16 19:32:00 to 24-FEB-16 19:32:00 (EST-5)
Location: WHITE HORSE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Delete this in-lieu of tornado damage.

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 24-FEB-16 18:43:00 to 24-FEB-16 18:43:00 (EST-5)
Location: MARIETTA AFS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Spotter in Marietta reported an estimated thunderstorm wind gust of 60 mph.

Thunderstorm Wind in MONTOUR, PENNSYLVANIA
From 24-FEB-16 18:35:00 to 24-FEB-16 18:35:00 (EST-5)
Location: EXCHANGE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds estimated near 60 mph knocked down numerous trees down along Muncy-Exchange Road.