An upper level disturbance combined with a very moist and unstable air mass to promote severe thunderstorms during the late afternoon and evening over the middle and lower Susquehanna Valley. The storms mainly produced damaging winds with only a few isolated reports of large hail.

Thunderstorm Wind in UNION, PENNSYLVANIA
From 12-JUL-10 15:10:00 to 12-JUL-10 15:10:00 (EST-5)
Location: NEW COLUMBIA
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds estimated near 60 mph knocked down trees in New Columbia.

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 12-JUL-10 15:25:00 to 12-JUL-10 15:25:00 (EST-5)
Location: HICKORY CORNERS
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

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

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 12-JUL-10 15:25:00 to 12-JUL-10 15:25:00 (EST-5)
Location: HERNDON
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

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

Thunderstorm Wind in LEBANON, PENNSYLVANIA
From 12-JUL-10 15:50:00 to 12-JUL-10 15:50:00 (EST-5)
Location: REXMONT
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds estimated near 60 mph knocked down several trees in South Lebanon Township.

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 12-JUL-10 16:10:00 to 12-JUL-10 16:10:00 (EST-5)
Location: WHITE HORSE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph knocked down trees and wires in Salisbury Township southeast of New Holland.

Thunderstorm Wind in SCHUYLKILL, PENNSYLVANIA
From 12-JUL-10 16:15:00 to 12-JUL-10 16:15:00 (EST-5)
Location: PINE GLEN
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

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

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 12-JUL-10 15:55:00 to 12-JUL-10 15:55:00 (EST-5)
Location: LEAMAN PLACE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

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

Thunderstorm Wind in SCHUYLKILL, PENNSYLVANIA
From 12-JUL-10 16:25:00 to 12-JUL-10 16:25:00 (EST-5)
Location: ROCK
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds estimated near 60 mph knocked down trees in Washington Township east of Pine Grove.

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 12-JUL-10 15:35:00 to 12-JUL-10 15:35:00 (EST-5)
Location: REBUCK
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

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

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 12-JUL-10 15:15:00 to 12-JUL-10 15:15:00 (EST-5)
Location: COLUMBIA
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

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

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 12-JUL-10 15:40:00 to 12-JUL-10 15:40:00 (EST-5)
Location: MANHEIM
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

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

Hail in PERRY, PENNSYLVANIA
From 12-JUL-10 14:00:00 to 12-JUL-10 14:00:00 (EST-5)
Location: DUNCANNON
Magnitude: 0.75 
Reported by: Public

Thunderstorm Wind in PERRY, PENNSYLVANIA
From 12-JUL-10 13:30:00 to 12-JUL-10 13:30:00 (EST-5)
Location: SHERMANS DALE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm winds estimated near 60 mph knocked down trees on Fox Hollow Road just south of Shermans Dale.

Hail in PERRY, PENNSYLVANIA
From 12-JUL-10 14:05:00 to 12-JUL-10 14:05:00 (EST-5)
Location: DUNCANNON
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in SNYDER, PENNSYLVANIA
From 12-JUL-10 14:30:00 to 12-JUL-10 14:30:00 (EST-5)
Location: MT PLEASANT MILLS
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph knocked down trees and wires in Mount Pleasant Hills.

Thunderstorm Wind in CUMBERLAND, PENNSYLVANIA
From 12-JUL-10 14:40:00 to 12-JUL-10 14:40:00 (EST-5)
Location: NEW CUMBERLAND
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds estimated near 60 mph knocked down trees in New Cumberland.