Severe thunderstorms crossed the Commonwealth during the mid afternoon and early evening hours, producing multiple reports of straight line damaging winds. The primary damage area started in Clearfield County along Interstate 80 and extended east-southeast through the south central mountains and into the lower Susquehanna Valley. Thunderstorm structures organized into bowing line segments, which tapped and accentuated anomalously strong environmental winds in the middle to lower atmosphere. Numerous measured peak wind gusts between 50 and 80 mph were reported via ASOS. One injury occurred in Cumberland County (Monroe Township) when a tree fell onto a vehicle.

Thunderstorm Wind in BEDFORD, PENNSYLVANIA
From 16-APR-10 16:10:00 to 16-APR-10 16:10:00 (EST-5)
Location: LOYSBURG
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph collapsed a barn in New Enterprise.

Thunderstorm Wind in LEBANON, PENNSYLVANIA
From 16-APR-10 17:42:00 to 16-APR-10 17:42:00 (EST-5)
Location: EAST HANOVER
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph brought down a tree onto a vehicle. The incident occurred approximately 5 miles west of Jonestown. The driver was not injured.

Thunderstorm Wind in LEBANON, PENNSYLVANIA
From 16-APR-10 17:43:00 to 16-APR-10 17:43:00 (EST-5)
Location: SUNSET
Magnitude: 56.00 EG
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds estimated near 65 mph tore a large roof off of a kennel in North Lebanon Township.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 16-APR-10 17:55:00 to 16-APR-10 17:55:00 (EST-5)
Location: EAST YORK
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds were estimated near 60 mph in East York.

Thunderstorm Wind in PERRY, PENNSYLVANIA
From 16-APR-10 17:11:00 to 16-APR-10 17:11:00 (EST-5)
Location: NEWPORT
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds were measured near 65 mph.

Thunderstorm Wind in SNYDER, PENNSYLVANIA
From 16-APR-10 16:50:00 to 16-APR-10 16:50:00 (EST-5)
Location: BEAVER SPGS ARPT
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph toppled trees and wires near Beaver Springs.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 16-APR-10 17:40:00 to 16-APR-10 17:40:00 (EST-5)
Location: LEWISBERRY
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds estimated near 60 mph toppled several large limbs near Lewisberry.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 16-APR-10 17:55:00 to 16-APR-10 17:55:00 (EST-5)
Location: EAST YORK
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds estimated near 60 mph toppled several large trees along East Market Street and Edgewood Road in East York.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 16-APR-10 17:40:00 to 16-APR-10 17:40:00 (EST-5)
Location: LEWISBERRY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds were estimated near 60 mph.

Thunderstorm Wind in CAMBRIA, PENNSYLVANIA
From 16-APR-10 15:40:00 to 16-APR-10 15:40:00 (EST-5)
Location: JOHNSTOWN
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds estimated near 60 mph toppled numerous trees in and around the city of Johnstown. Several thousand customers experienced power outages which lasted for approximately 24 to 48 hours.

Thunderstorm Wind in SOMERSET, PENNSYLVANIA
From 16-APR-10 15:45:00 to 16-APR-10 15:45:00 (EST-5)
Location: DAVIDSVILLE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph toppled several trees in Davidsville. The downed trees caused several power outages.

Thunderstorm Wind in SOMERSET, PENNSYLVANIA
From 16-APR-10 15:45:00 to 16-APR-10 15:45:00 (EST-5)
Location: WINDBER
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph toppled several trees in Windber. The downed trees resulted in power outages.

Thunderstorm Wind in CLEARFIELD, PENNSYLVANIA
From 16-APR-10 15:30:00 to 16-APR-10 15:30:00 (EST-5)
Location: OSCEOLA MILLS
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph toppled several trees in Decatur Township.

Thunderstorm Wind in MIFFLIN, PENNSYLVANIA
From 16-APR-10 16:35:00 to 16-APR-10 16:35:00 (EST-5)
Location: MC VEYTOWN
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph toppled numerous trees and wires near McVeytown.

Thunderstorm Wind in MIFFLIN, PENNSYLVANIA
From 16-APR-10 16:35:00 to 16-APR-10 16:35:00 (EST-5)
Location: LEWISTOWN
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph toppled numerous trees and wires in Lewistown.

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 16-APR-10 18:15:00 to 16-APR-10 18:15:00 (EST-5)
Location: HAMILTON PARK
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph toppled numerous trees and wires across portions of the county.

Thunderstorm Wind in BLAIR, PENNSYLVANIA
From 16-APR-10 16:10:00 to 16-APR-10 16:10:00 (EST-5)
Location: (AOO)BLAIR CO ARPT A
Magnitude: 69.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Altoona-Blair County Airport (KAOO) measured a peak wind gust of 69 knots (79 mph).

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 16-APR-10 18:00:00 to 16-APR-10 18:00:00 (EST-5)
Location: ROHRERSTOWN
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

WGAL-TV meteorologist in Lancaster measured a peak wind gust of 70 mph.

Thunderstorm Wind in CAMBRIA, PENNSYLVANIA
From 16-APR-10 15:48:00 to 16-APR-10 15:48:00 (EST-5)
Location: JOHNSTOWN
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Johnstown Airport (KJST) reported a peak wind gusts of 54 knots (62 mph).

Thunderstorm Wind in CUMBERLAND, PENNSYLVANIA
From 16-APR-10 17:20:00 to 16-APR-10 17:20:00 (EST-5)
Location: WILLIAMS GROVE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds estimated near 60 mph toppled a tree onto a vehicle. The incident occurred on Locust Point Road between Baish Road and Park Place in Monroe Township.  The female driver of the vehicle sustained injuries.

Thunderstorm Wind in BEDFORD, PENNSYLVANIA
From 16-APR-10 16:15:00 to 16-APR-10 16:15:00 (EST-5)
Location: SAXTON
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph partially collapsed a mobile home in Saxton.

Thunderstorm Wind in FRANKLIN, PENNSYLVANIA
From 16-APR-10 16:41:00 to 16-APR-10 16:41:00 (EST-5)
Location: CHAMBERSBURG
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph toppled numerous trees and wires across portions of the county.

Thunderstorm Wind in HUNTINGDON, PENNSYLVANIA
From 16-APR-10 16:25:00 to 16-APR-10 16:25:00 (EST-5)
Location: HUNTINGDON
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph toppled several trees and wires in Oneida and Penn Townships. Sporadic wind damage was also reported county-wide.

Thunderstorm Wind in BLAIR, PENNSYLVANIA
From 16-APR-10 16:05:00 to 16-APR-10 16:05:00 (EST-5)
Location: MILL RUN
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph toppled multiple trees and wires across portions of the county.

Thunderstorm Wind in BEDFORD, PENNSYLVANIA
From 16-APR-10 16:05:00 to 16-APR-10 16:05:00 (EST-5)
Location: QUEEN
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph collapsed an old school house north of Osterburg near Imler.

Thunderstorm Wind in DAUPHIN, PENNSYLVANIA
From 16-APR-10 17:35:00 to 16-APR-10 17:35:00 (EST-5)
Location: SKYLINE VIEW
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds estimated near 60 mph brought down ten large pine trees on the 500 block of North Mill Road. The incident occurred a few miles east-northeast of Skyline View or near Grantsville.

Thunderstorm Wind in CLEARFIELD, PENNSYLVANIA
From 16-APR-10 15:30:00 to 16-APR-10 15:30:00 (EST-5)
Location: ALLPORT
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm winds estimated near 60 mph toppled several trees in Winburne.

Thunderstorm Wind in CAMBRIA, PENNSYLVANIA
From 16-APR-10 15:40:00 to 16-APR-10 15:40:00 (EST-5)
Location: JOHNSTOWN
Magnitude: 52.00 MG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds measured 60 mph.