A large upper low over Ontario moved south with its primary cold front sagging across the Great Lakes region into the Ohio Valley. Moist and unstable conditions ahead of the cold front where dewpoints climbed into the upper 60s to low 70s and temperatures with the 80s and 90s. Thunderstorms developed during the early afternoon and become organized in conjunction with increasing mid-level height falls and winds aloft. The severe storms produced multiple reports of damaging winds and a few reports of hail from the Allegheny Mountains into the Middle Susquehanna Valley.

Thunderstorm Wind in HUNTINGDON, PENNSYLVANIA
From 13-JUL-14 18:05:00 to 13-JUL-14 18:05:00 (EST-5)
Location: PETERSBURG
Magnitude: 50.00 EG
Property damage: 0.50K
Reported by: 911 Call Center

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

Thunderstorm Wind in CAMBRIA, PENNSYLVANIA
From 13-JUL-14 17:15:00 to 13-JUL-14 17:15:00 (EST-5)
Location: FERNDALE
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

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

Thunderstorm Wind in MONTOUR, PENNSYLVANIA
From 13-JUL-14 18:57:00 to 13-JUL-14 18:57:00 (EST-5)
Location: DANVILLE
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees and wires near Mechanicsville.

Thunderstorm Wind in PERRY, PENNSYLVANIA
From 13-JUL-14 19:05:00 to 13-JUL-14 19:05:00 (EST-5)
Location: ELLIOTSBURG
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees near New Bloomfield.

Thunderstorm Wind in MIFFLIN, PENNSYLVANIA
From 13-JUL-14 18:24:00 to 13-JUL-14 18:24:00 (EST-5)
Location: MILROY
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

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

Thunderstorm Wind in FRANKLIN, PENNSYLVANIA
From 13-JUL-14 19:20:00 to 13-JUL-14 19:20:00 (EST-5)
Location: GREENCASTLE
Magnitude: 50.00 EG
Property damage: 0.50K
Reported by: Trained Spotter

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

Thunderstorm Wind in MIFFLIN, PENNSYLVANIA
From 13-JUL-14 18:29:00 to 13-JUL-14 18:29:00 (EST-5)
Location: LUMBER CITY
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

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

Thunderstorm Wind in SCHUYLKILL, PENNSYLVANIA
From 13-JUL-14 19:48:00 to 13-JUL-14 19:48:00 (EST-5)
Location: MECHANICSVILLE
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees near St. Clair.

Thunderstorm Wind in CLEARFIELD, PENNSYLVANIA
From 13-JUL-14 17:00:00 to 13-JUL-14 17:00:00 (EST-5)
Location: SYLVAN GROVE
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 along Rolling Stone Road in Kylertown.

Thunderstorm Wind in ADAMS, PENNSYLVANIA
From 13-JUL-14 19:41:00 to 13-JUL-14 19:41:00 (EST-5)
Location: GRANITE HILL
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees and wires near Gettysburg.

Thunderstorm Wind in CENTRE, PENNSYLVANIA
From 13-JUL-14 17:30:00 to 13-JUL-14 17:30:00 (EST-5)
Location: CENTRAL CITY
Magnitude: 50.00 EG
Property damage: 2.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees and wires in several locations across the northern part of the county.

Thunderstorm Wind in ADAMS, PENNSYLVANIA
From 13-JUL-14 19:39:00 to 13-JUL-14 19:39:00 (EST-5)
Location: VIRGINIA MILLS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm winds estimated near 60 mph knocked down a large tree and several branches at Mountain View Golf Club in Fairfield.

Thunderstorm Wind in ADAMS, PENNSYLVANIA
From 13-JUL-14 19:45:00 to 13-JUL-14 19:45:00 (EST-5)
Location: GREENMOUNT
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: COOP Observer

Thunderstorm winds estimated near 60 mph knocked down utility wires on a car along RT 116 near Fairfield.

Thunderstorm Wind in LEBANON, PENNSYLVANIA
From 13-JUL-14 20:48:00 to 13-JUL-14 20:48:00 (EST-5)
Location: MT ZION
Magnitude: 50.00 EG
Property damage: 0.50K
Reported by: 911 Call Center

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

Hail in CAMBRIA, PENNSYLVANIA
From 13-JUL-14 17:03:00 to 13-JUL-14 17:03:00 (EST-5)
Location: MUNDAYS CORNER
Magnitude: 1.00 
Reported by: Public

Quarter size hail (1 inch diameter) was reported on Chickaree mountain.

Hail in CAMBRIA, PENNSYLVANIA
From 13-JUL-14 16:12:00 to 13-JUL-14 16:12:00 (EST-5)
Location: JOHNSTOWN
Magnitude: 0.88 
Reported by: Public

Nickel size hail (0.88 inch diameter) was reported in Johnstown.

Thunderstorm Wind in CAMBRIA, PENNSYLVANIA
From 13-JUL-14 16:10:00 to 13-JUL-14 16:10:00 (EST-5)
Location: JOHNSTOWN
Magnitude: 50.00 EG
Property damage: 2.00K
Reported by: 911 Call Center

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

Thunderstorm Wind in CLINTON, PENNSYLVANIA
From 13-JUL-14 18:00:00 to 13-JUL-14 18:00:00 (EST-5)
Location: LOCK HAVEN
Magnitude: 50.00 EG
Property damage: 2.00K
Reported by: Trained Spotter

Thunderstorm winds estimated near 60 mph knocked down several trees in Lock Haven. Spotter measured two thunderstorm wind gusts up to 65 mph.