A line of convection formed ahead of an approaching frontal system on the afternoon of June 8th, 2015. Discrete rotating supercells formed ahead of the main line of storms, and one such cell produced an EF-0 tornado in Northumberland County.

Thunderstorm Wind in PERRY, PENNSYLVANIA
From 08-JUN-15 14:50:00 to 08-JUN-15 14:50:00 (EST-5)
Location: MILLERSTOWN
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: NWS Employee

A thunderstorm producing winds estimated near 60 mph knocked a tree down onto Route 322 near Millerstown...blocking the right lane and the berm.

Thunderstorm Wind in LEBANON, PENNSYLVANIA
From 08-JUN-15 16:15:00 to 08-JUN-15 16:15:00 (EST-5)
Location: BORDNERSVILLE
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 60 mph knocked down trees near Fort Indiantown Gap.

Thunderstorm Wind in PERRY, PENNSYLVANIA
From 08-JUN-15 15:05:00 to 08-JUN-15 15:05:00 (EST-5)
Location: GREEN PARK
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 60 mph knocked down trees near Loysville.

Flash Flood in FRANKLIN, PENNSYLVANIA
From 08-JUN-15 17:00:00 to 08-JUN-15 18:23:00 (EST-5)
Location: MAINSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Heavy rain (over 4 inches in 2 hours) brought flash flooding to the area.  A family was evacuated from a home in the 600 block of Shippensburg Road (Route 533) in North Newton Township.  Flooding was reported at the Laughlin Mill in Newville.  Flash flooding was also reported in the Orrstown area and in Shippensburg.

Thunderstorm Wind in DAUPHIN, PENNSYLVANIA
From 08-JUN-15 15:40:00 to 08-JUN-15 15:40:00 (EST-5)
Location: HALIFAX
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 60 mph knocked down trees near Halifax.

Thunderstorm Wind in SCHUYLKILL, PENNSYLVANIA
From 08-JUN-15 15:45:00 to 08-JUN-15 15:45:00 (EST-5)
Location: PINE GLEN
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 60 mph knocked down trees near Pine Glen.

Thunderstorm Wind in COLUMBIA, PENNSYLVANIA
From 08-JUN-15 15:50:00 to 08-JUN-15 15:50:00 (EST-5)
Location: JAMISON CITY
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 60 mph knocked down numerous trees near Jamison City.

Thunderstorm Wind in SULLIVAN, PENNSYLVANIA
From 08-JUN-15 15:55:00 to 08-JUN-15 15:55:00 (EST-5)
Location: HEMLOCK GROVE
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 60 mph knocked down trees on Route 42 near Beaver Lake Road in Davidson Twp.

Thunderstorm Wind in DAUPHIN, PENNSYLVANIA
From 08-JUN-15 16:00:00 to 08-JUN-15 16:00:00 (EST-5)
Location: LYKENS
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 60 mph knocked down trees near Lykens.

Thunderstorm Wind in CUMBERLAND, PENNSYLVANIA
From 08-JUN-15 16:43:00 to 08-JUN-15 16:43:00 (EST-5)
Location: BRANDTSVILLE
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 60 mph knocked down trees near Brandtsville.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 08-JUN-15 16:58:00 to 08-JUN-15 16:58:00 (EST-5)
Location: LEWISBERRY
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 60 mph knocked down trees near Lewisberry.

Thunderstorm Wind in HUNTINGDON, PENNSYLVANIA
From 08-JUN-15 14:40:00 to 08-JUN-15 14:40:00 (EST-5)
Location: DONATION
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A thunderstorm producing winds estimated near 60 mph knocked down trees on an outbuilding near Donation. A vehicle inside the outbuilding was damaged.

Thunderstorm Wind in LYCOMING, PENNSYLVANIA
From 08-JUN-15 15:05:00 to 08-JUN-15 15:05:00 (EST-5)
Location: SOUTH WILLIAMSPOR
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 60 mph knocked down trees in South Williamsport.

Thunderstorm Wind in PERRY, PENNSYLVANIA
From 08-JUN-15 15:05:00 to 08-JUN-15 15:05:00 (EST-5)
Location: LANDISBURG
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 60 mph knocked down trees near Landisburg.

Thunderstorm Wind in CUMBERLAND, PENNSYLVANIA
From 08-JUN-15 15:30:00 to 08-JUN-15 15:30:00 (EST-5)
Location: MIDDLESEX
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

A thunderstorm producing winds estimated near 60 mph knocked down trees and wires in the 1000 block of Harrisburg Pike in Middlesex...partially blocking the road.

Thunderstorm Wind in ADAMS, PENNSYLVANIA
From 08-JUN-15 17:00:00 to 08-JUN-15 17:00:00 (EST-5)
Location: SEVEN STARS
Magnitude: 50.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 60 mph across portions of Western Adams County.

Thunderstorm Wind in DAUPHIN, PENNSYLVANIA
From 08-JUN-15 17:05:00 to 08-JUN-15 17:05:00 (EST-5)
Location: ENHAUT
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 60 mph knocked own trees near Steelton.

Thunderstorm Wind in DAUPHIN, PENNSYLVANIA
From 08-JUN-15 17:15:00 to 08-JUN-15 17:15:00 (EST-5)
Location: MIDDLETOWN
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 60 mph knocked down trees near Middletown.

Flash Flood in PERRY, PENNSYLVANIA
From 08-JUN-15 15:50:00 to 08-JUN-15 18:24:00 (EST-5)
Location: MILLERSTOWN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Heavy rainfall brought flash flooding to the Millerstown area.  The local fire company performed 2 water rescues, 1 from a house and 1 from a motorist that tried to drive through a flooded road.  Eight flooded basements with as much as 7 feet of water in them was reported.  Roads flooded included North Market Street at Apple Street and Sunbury Path and Locust Alley.  Sunbury Path at Mill Race Road and Raccoon Valley Road west of the borough alsh had farm fields flood across the roadways.

Flash Flood in CUMBERLAND, PENNSYLVANIA
From 08-JUN-15 17:00:00 to 08-JUN-15 18:23:00 (EST-5)
Location: SHIPPENSBURG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Heavy rain (over 4 inches in 2 hours) brought flash flooding to the area.  A family was evacuated from a home in the 600 block of Shippensburg Road (Route 533) in North Newton Township.  Flooding was reported at the Laughlin Mill in Newville.  Flash flooding was also reported in the Orrstown area and in Shippensburg.

Thunderstorm Wind in BLAIR, PENNSYLVANIA
From 08-JUN-15 14:05:00 to 08-JUN-15 14:05:00 (EST-5)
Location: MC KEE
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Social Media

A thunderstorm producing winds estimated near 60 mph knocked down trees onto Johnstown Road near East Freedom.

Hail in SNYDER, PENNSYLVANIA
From 08-JUN-15 13:07:00 to 08-JUN-15 13:07:00 (EST-5)
Location: MC CLURE
Magnitude: 1.00 
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Social Media

A thunderstorm produced nickel to quarter sized hail near McClure.

Hail in SCHUYLKILL, PENNSYLVANIA
From 08-JUN-15 16:15:00 to 08-JUN-15 16:15:00 (EST-5)
Location: FRIEDENSBURG
Magnitude: 1.00 
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Social Media

A thunderstorm produced quarter sized hail near Friedensburg.

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 08-JUN-15 14:00:00 to 08-JUN-15 14:00:00 (EST-5)
Location: HERNDON
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Emergency Manager

A thunderstorm producing winds estimated near 60 mph knocked down two trees and closed a road in Jackson Township.

Thunderstorm Wind in JUNIATA, PENNSYLVANIA
From 08-JUN-15 14:10:00 to 08-JUN-15 14:10:00 (EST-5)
Location: OLD PORT
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Social Media

A thunderstorm producing winds estimated near 60 mph knocked down trees and wires on Route 333 at Tuscarora Road in Turbett Twp.

Thunderstorm Wind in JUNIATA, PENNSYLVANIA
From 08-JUN-15 14:15:00 to 08-JUN-15 14:15:00 (EST-5)
Location: MEXICO
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Social Media

A thunderstorm producing winds estimated near 60 mph knocked down multiple trees and wires on Doe Run Road.

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 08-JUN-15 14:40:00 to 08-JUN-15 14:40:00 (EST-5)
Location: GOWEN CITY
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A thunderstorm producing winds estimated near 60 mph produced damage to a home and several out buildings on Route 125 near Gowen City.

Thunderstorm Wind in PERRY, PENNSYLVANIA
From 08-JUN-15 14:50:00 to 08-JUN-15 14:50:00 (EST-5)
Location: BLAIN
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 60 mph knocked down trees near Blain.

Thunderstorm Wind in HUNTINGDON, PENNSYLVANIA
From 08-JUN-15 15:00:00 to 08-JUN-15 15:00:00 (EST-5)
Location: DONATION
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Trained Spotter

A thunderstorm producing winds estimated near 60 mph knocked down large limbs onto Route 26 near Donation.

Thunderstorm Wind in ADAMS, PENNSYLVANIA
From 08-JUN-15 17:40:00 to 08-JUN-15 17:40:00 (EST-5)
Location: LITTLESTOWN
Magnitude: 70.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm producing winds estimated near 80 mph knocked down trees and wires near Littlestown...and damaged some farm buildings.