Severe thunderstorms developed across central Pennsylvania as an area of low pressure traveled along a stationary frontal boundary that was draped across the area.  A flash flood occurred in Schuylkill County.

Thunderstorm Wind in LEBANON, PENNSYLVANIA
From 31-MAY-15 17:20:00 to 31-MAY-15 17:20:00 (EST-5)
Location: PALMYRA
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: State Official

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

Thunderstorm Wind in LEBANON, PENNSYLVANIA
From 31-MAY-15 17:30:00 to 31-MAY-15 17:30:00 (EST-5)
Location: ANNVILLE
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

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

Thunderstorm Wind in LEBANON, PENNSYLVANIA
From 31-MAY-15 18:30:00 to 31-MAY-15 18:30:00 (EST-5)
Location: HEBRON
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: State Official

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

Thunderstorm Wind in DAUPHIN, PENNSYLVANIA
From 31-MAY-15 17:20:00 to 31-MAY-15 17:20:00 (EST-5)
Location: HERSHEY
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds estimated near 60 mph knocked down numerous large branches near Hershey.

Thunderstorm Wind in ELK, PENNSYLVANIA
From 31-MAY-15 11:15:00 to 31-MAY-15 11:15:00 (EST-5)
Location: RIDGWAY
Magnitude: 50.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds estimated near 60 mph produced sporadic wind damage across western Elk County.

Thunderstorm Wind in CUMBERLAND, PENNSYLVANIA
From 31-MAY-15 16:45:00 to 31-MAY-15 16:45:00 (EST-5)
Location: ALLEN
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

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

Flash Flood in SCHUYLKILL, PENNSYLVANIA
From 31-MAY-15 17:58:00 to 31-MAY-15 20:30:00 (EST-5)
Location: SCHUYKILL HAVEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Several homes and a bank were flooded on Center and Progress Avenues in Schuylkill Haven.

Hail in UNION, PENNSYLVANIA
From 31-MAY-15 13:41:00 to 31-MAY-15 13:41:00 (EST-5)
Location: NEW COLUMBIA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MIFFLIN, PENNSYLVANIA
From 31-MAY-15 14:28:00 to 31-MAY-15 14:28:00 (EST-5)
Location: MILROY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in MIFFLIN, PENNSYLVANIA
From 31-MAY-15 14:28:00 to 31-MAY-15 14:28:00 (EST-5)
Location: MILROY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in JUNIATA, PENNSYLVANIA
From 31-MAY-15 15:35:00 to 31-MAY-15 15:35:00 (EST-5)
Location: RICHFIELD
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in SNYDER, PENNSYLVANIA
From 31-MAY-15 15:45:00 to 31-MAY-15 15:45:00 (EST-5)
Location: MT PLEASANT MILLS
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm Wind in FULTON, PENNSYLVANIA
From 31-MAY-15 14:12:00 to 31-MAY-15 14:12:00 (EST-5)
Location: GEM
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: State Official

Thunderstorm winds estimated near 60 mph knocked down trees and wires near the intersection of Great Cove and Timber Ridge Roads near Needmore.

Thunderstorm Wind in COLUMBIA, PENNSYLVANIA
From 31-MAY-15 14:57:00 to 31-MAY-15 14:57:00 (EST-5)
Location: FOWLERSVILLE
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

Thunderstorm winds estimated near 60 mph knocked down trees in North Centre Township.

Thunderstorm Wind in DAUPHIN, PENNSYLVANIA
From 31-MAY-15 16:46:00 to 31-MAY-15 16:46:00 (EST-5)
Location: HUMMELSTOWN
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Trained Spotter

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

Thunderstorm Wind in LEBANON, PENNSYLVANIA
From 31-MAY-15 16:57:00 to 31-MAY-15 16:57:00 (EST-5)
Location: PALMYRA
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

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

Thunderstorm Wind in CUMBERLAND, PENNSYLVANIA
From 31-MAY-15 16:40:00 to 31-MAY-15 16:40:00 (EST-5)
Location: MECHANICSBURG
Magnitude: 50.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds estimated near 60 mph produced sporadic tree damage from Boiling Springs to Mechanicsburg.

Thunderstorm Wind in LEBANON, PENNSYLVANIA
From 31-MAY-15 17:20:00 to 31-MAY-15 17:20:00 (EST-5)
Location: CAMPBELLTOWN
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: State Official

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

Thunderstorm Wind in DAUPHIN, PENNSYLVANIA
From 31-MAY-15 17:24:00 to 31-MAY-15 17:24:00 (EST-5)
Location: BACHMANVILLE
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Trained Spotter

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