A trough over the Great Lakes/Ohio Valley progressed slowly east across the Mid-Atlantic and New England states during the afternoon and evening hours. Meanwhile at lower levels, a secondary cold frontal surge crossed the central Appalachians triggering another round of diurnal storms. Strong heating of a very moist, high PW airmass along with moderate deep shear and sufficient large scale forcing promoted organized thunderstorm clusters/bands which produced numerous reports of damaging winds and isolated, marginally severe hail.

Thunderstorm Wind in HUNTINGDON, PENNSYLVANIA
From 03-JUL-14 13:28:00 to 03-JUL-14 13:28:00 (EST-5)
Location: MILL CREEK
Magnitude: 50.00 EG
Property damage: 0.50K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees in Mill Creek.

Thunderstorm Wind in CLINTON, PENNSYLVANIA
From 03-JUL-14 13:40:00 to 03-JUL-14 13:40:00 (EST-5)
Location: LOCK HAVEN
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: Trained Spotter

Thunderstorm winds estimated near 60 mph knocked down trees in Lock Haven.

Thunderstorm Wind in LYCOMING, PENNSYLVANIA
From 03-JUL-14 14:21:00 to 03-JUL-14 14:21:00 (EST-5)
Location: (IPT)WILLIAMSPORT AR
Magnitude: 57.00 MG
Reported by: ASOS

The Williamsport Regional Airport ASOS measured a peak thunderstorm wind gust of 66 mph.

Thunderstorm Wind in LYCOMING, PENNSYLVANIA
From 03-JUL-14 14:22:00 to 03-JUL-14 14:22:00 (EST-5)
Location: NEWBERRY
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: Trained Spotter

Thunderstorm winds estimated near 60 mph knocked down trees around Williamsport.

Thunderstorm Wind in JUNIATA, PENNSYLVANIA
From 03-JUL-14 14:30:00 to 03-JUL-14 14:30:00 (EST-5)
Location: MIFFLINTOWN
Magnitude: 50.00 EG
Property damage: 0.50K
Reported by: 911 Call Center

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

Thunderstorm Wind in SCHUYLKILL, PENNSYLVANIA
From 03-JUL-14 14:30:00 to 03-JUL-14 14:30:00 (EST-5)
Location: KEFFERS
Magnitude: 50.00 EG
Property damage: 5.00K
Reported by: State Official

Thunderstorm winds estimated near 60 mph knocked down trees and wires near Keffers. A roof was also blown off a commercial building in Hegins Township.

Thunderstorm Wind in MONTOUR, PENNSYLVANIA
From 03-JUL-14 15:30:00 to 03-JUL-14 15:30:00 (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 in Danville.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 03-JUL-14 16:45:00 to 03-JUL-14 16:45:00 (EST-5)
Location: AIRVILLE
Magnitude: 50.00 EG
Property damage: 3.00K
Reported by: Utility Company

Thunderstorm winds estimated near 60 mph knocked down trees in Lower Chanceford and Peach Bottom Townships. Widespread power outages were reported in both townships.

Thunderstorm Wind in LYCOMING, PENNSYLVANIA
From 03-JUL-14 14:43:00 to 03-JUL-14 14:43:00 (EST-5)
Location: MONTOURSVILLE
Magnitude: 50.00 EG
Property damage: 2.00K
Reported by: Trained Spotter

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

Thunderstorm Wind in COLUMBIA, PENNSYLVANIA
From 03-JUL-14 14:51:00 to 03-JUL-14 14:51:00 (EST-5)
Location: SLABTOWN
Magnitude: 50.00 EG
Property damage: 2.00K
Reported by: 911 Call Center

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

Thunderstorm Wind in CLEARFIELD, PENNSYLVANIA
From 03-JUL-14 11:20:00 to 03-JUL-14 11:20:00 (EST-5)
Location: MAHAFFEY JCT
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

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

Thunderstorm Wind in CLEARFIELD, PENNSYLVANIA
From 03-JUL-14 11:59:00 to 03-JUL-14 11:59:00 (EST-5)
Location: FAUNCE
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

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

Thunderstorm Wind in BLAIR, PENNSYLVANIA
From 03-JUL-14 12:55:00 to 03-JUL-14 12:55:00 (EST-5)
Location: (AOO)BLAIR CO ARPT A
Magnitude: 50.00 EG
Property damage: 2.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down large tree limbs and wires in Martinsburg.

Thunderstorm Wind in HUNTINGDON, PENNSYLVANIA
From 03-JUL-14 13:25:00 to 03-JUL-14 13:25:00 (EST-5)
Location: MAPLETON
Magnitude: 50.00 EG
Property damage: 0.50K
Reported by: 911 Call Center

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

Thunderstorm Wind in PERRY, PENNSYLVANIA
From 03-JUL-14 14:51:00 to 03-JUL-14 14:51:00 (EST-5)
Location: MILLERSTOWN
Magnitude: 50.00 EG
Property damage: 0.50K
Reported by: 911 Call Center

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

Thunderstorm Wind in SULLIVAN, PENNSYLVANIA
From 03-JUL-14 15:00:00 to 03-JUL-14 15:00:00 (EST-5)
Location: MUNCY VLY
Magnitude: 50.00 EG
Property damage: 0.50K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees in Muncy Valley.

Thunderstorm Wind in SULLIVAN, PENNSYLVANIA
From 03-JUL-14 15:15:00 to 03-JUL-14 15:15:00 (EST-5)
Location: MILDRED
Magnitude: 50.00 EG
Property damage: 0.50K
Reported by: 911 Call Center

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

Thunderstorm Wind in SCHUYLKILL, PENNSYLVANIA
From 03-JUL-14 16:30:00 to 03-JUL-14 16:30:00 (EST-5)
Location: FRACKVILLE
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees in Butler and Mahanoy Townships near Frackville.

Thunderstorm Wind in HUNTINGDON, PENNSYLVANIA
From 03-JUL-14 13:15:00 to 03-JUL-14 13:15:00 (EST-5)
Location: SPRUCE ROCK
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: 911 Call Center

Thunderstorm winds estimated near 60 mph knocked down trees near Spruce Creek.

Hail in NORTHUMBERLAND, PENNSYLVANIA
From 03-JUL-14 14:48:00 to 03-JUL-14 14:48:00 (EST-5)
Location: ATLAS
Magnitude: 1.25 
Reported by: 911 Call Center

Half-dollar size hail (1.25 inch diameter) was reported in Mount Carmel.

Thunderstorm Wind in SNYDER, PENNSYLVANIA
From 03-JUL-14 14:51:00 to 03-JUL-14 14:51:00 (EST-5)
Location: BEAVERTOWN
Magnitude: 50.00 EG
Property damage: 0.50K
Reported by: Social Media

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