A series of pulse severe thunderstorms, which evolved into mini bow echoes during the late afternoon and evening hours of July 26th produced wind damage and large hail across central Pennsylvania. One storm produced a short-lived tornado in Warren County.

Thunderstorm Wind in FRANKLIN, PENNSYLVANIA
From 26-JUL-08 14:56:00 to 26-JUL-08 14:58:00 (EST-5)
Location: MERCERSBURG
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds knocked down numerous trees, power poles and wires in several locations around Mercersburg.

Thunderstorm Wind in WARREN, PENNSYLVANIA
From 26-JUL-08 16:35:00 to 26-JUL-08 16:35:00 (EST-5)
Location: ENTERPRISE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds knocked down trees and power poles one mile east of the Crawford/Warren County border near SR 27.

Hail in WARREN, PENNSYLVANIA
From 26-JUL-08 16:35:00 to 26-JUL-08 16:35:00 (EST-5)
Location: GRAND VLY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Golf Ball size hail was reported near Grand Valley.

Thunderstorm Wind in WARREN, PENNSYLVANIA
From 26-JUL-08 16:35:00 to 26-JUL-08 16:35:00 (EST-5)
Location: GRAND VLY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds knocked down trees and power lines near Grand Valley.

Hail in LYCOMING, PENNSYLVANIA
From 26-JUL-08 17:07:00 to 26-JUL-08 17:07:00 (EST-5)
Location: PENNSDALE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Nickel size hail was reported at Pennsdale.

Thunderstorm Wind in MCKEAN, PENNSYLVANIA
From 26-JUL-08 17:20:00 to 26-JUL-08 17:40:00 (EST-5)
Location: LUDLOW
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds knocked down numerous trees and wires from Ludlow, northeast to Marshburg and Lewis Run between 6:20 pm EDT and 6:40 pm EDT.

Thunderstorm Wind in SULLIVAN, PENNSYLVANIA
From 26-JUL-08 17:22:00 to 26-JUL-08 17:22:00 (EST-5)
Location: FORKSVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds knocked down trees and power lines along Hoppestown Road in Hillsgrove Township.

Tornado in WARREN, PENNSYLVANIA
From 26-JUL-08 17:07:00 to 26-JUL-08 17:08:00 (EST-5)
Location: OLD CLARENDON
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey team, along with the Warren County Public Safety Director, surveyed a known area of damage southwest of Clarendon along a dirt road named Farmsworth Road. Damage, in the form of trees being knocked down, were observed less than one-quarter mile along the road. Dozens of trees were knocked down parallel to the road, all pointing in the same direction for almost 1.5 miles. These trees appeared to be knocked down by a microburst as there was no evidence of tornado damage.
Approximately one and three-quarters miles down the road, a swath of tree damage was found that appeared to be related a tornado touchdown. The tornado was approximately 250 yards long and 25 to 50 yards wide. Wind speeds were estimated at the expected value for trees being uprooted, which translates into an EF-1 tornado with a maximum wind speed approaching 90 miles per hour.
The downburst swath continued another quarter mile down Farmsworth Road which caused the total track of the downburst to be one and three-quarters miles. Wind speeds that knocked down these trees were estimated to be 70 to 80 mph. The tornado, and associated downburst winds, were part of a larger area of wind damage that extended from three miles west of Tidioute to nine miles west of Warren.
There were no injuries or deaths.

Thunderstorm Wind in WARREN, PENNSYLVANIA
From 26-JUL-08 16:57:00 to 26-JUL-08 17:20:00 (EST-5)
Location: TIDIOUTE
Magnitude: 80.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

The Warren County 911 center reported numerous trees and wires down from Tidioute to Warren.