A line of showers and thunderstorms developed in a moderately unstable airmass over south-central Pennsylvania, just ahead of an approaching cold front. This line of storms produced several reports wind damage from Franklin County eastward to Lancaster County, as well as a couple of severe hail reports in Lancaster County.

Hail in LANCASTER, PENNSYLVANIA
From 05-SEP-17 16:29:00 to 05-SEP-17 16:29:00 (EST-5)
Location: HAMILTON PARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced golf ball sized hail in Lancaster.

Thunderstorm Wind in FRANKLIN, PENNSYLVANIA
From 05-SEP-17 14:50:00 to 05-SEP-17 14:50:00 (EST-5)
Location: ZULLINGER
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm producing winds estimated near 60 mph knocked down large trees onto Marsh Road.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 05-SEP-17 15:30:00 to 05-SEP-17 15:30:00 (EST-5)
Location: GRANGEVILLE
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires near Parkville.

Thunderstorm Wind in LEBANON, PENNSYLVANIA
From 05-SEP-17 15:55:00 to 05-SEP-17 15:55:00 (EST-5)
Location: PALMYRA
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm producing winds estimated near 60 mph knocked down trees adn wires in North Palmyra.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 05-SEP-17 15:29:00 to 05-SEP-17 15:29:00 (EST-5)
Location: WEST YORK
Magnitude: 70.00 EG
Property damage: 12.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A severe thunderstorm producing straight-line winds estimated near 80 mph snapped several trees and knocked down eight poles in York and West York.

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 05-SEP-17 15:43:00 to 05-SEP-17 15:43:00 (EST-5)
Location: COLUMBIA
Magnitude: 61.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm producing winds estimated near 70 mph knocked down numerous trees and wires in Columbia.

Thunderstorm Wind in ADAMS, PENNSYLVANIA
From 05-SEP-17 15:00:00 to 05-SEP-17 15:00:00 (EST-5)
Location: CASHTOWN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A severe thunderstorm producing winds estimated near 60 mph knocked down trees near Cashtown.

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 05-SEP-17 16:00:00 to 05-SEP-17 16:00:00 (EST-5)
Location: KLINESVILLE
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm producing winds estimated near 60 mph knocked down a tree across Iron Bridge Road north of Columbia.

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 05-SEP-17 16:15:00 to 05-SEP-17 16:15:00 (EST-5)
Location: HAMILTON PARK
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm producing winds estimated near 60 mph knocked down large trees in East Lancaster.

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 05-SEP-17 16:16:00 to 05-SEP-17 16:16:00 (EST-5)
Location: HAMILTON PARK
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm producing winds estimated near 60 mph knocked down a large tree onto a townhouse in Lancaster.

Thunderstorm Wind in FRANKLIN, PENNSYLVANIA
From 05-SEP-17 14:35:00 to 05-SEP-17 14:35:00 (EST-5)
Location: GREENCASTLE
Magnitude: 52.00 MG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm producing winds estimated near 60 mph knocked down trees onto Leitersburg Road in Greencastle.

Thunderstorm Wind in FRANKLIN, PENNSYLVANIA
From 05-SEP-17 14:40:00 to 05-SEP-17 14:40:00 (EST-5)
Location: GREENCASTLE
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A wind gust of 65 mph was measured in Greencastle.

Thunderstorm Wind in ADAMS, PENNSYLVANIA
From 05-SEP-17 15:00:00 to 05-SEP-17 15:00:00 (EST-5)
Location: CASHTOWN
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A wind gust of 70 mph was measured near Cashtown in Adams County.

Hail in LANCASTER, PENNSYLVANIA
From 05-SEP-17 16:15:00 to 05-SEP-17 16:15:00 (EST-5)
Location: CENTERVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced quarter-sized hail near Landisville.