A vigorous upper air disturbance in the northwest flow behind the cold front still had sufficient moisture to develop strong to severe thunderstorms across Pennsylvania and New Jersey during the afternoon and the evening of the 17th.

Thunderstorm Wind in CARBON, PENNSYLVANIA
From 17-AUG-07 13:15:00 to 17-AUG-07 13:40:00 (EST-5)
Location: NESQUEHONING
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm knocked down numerous trees and wires in the central part of the county. A funnel cloud and rotating wall cloud was seen around Lehighton and Jim Thorpe. Several trees and wires blocked roadways. Downed tree limbs and trees were reported in both Jim Thorpe and Lehighton where a Skywarn spotter estimated wind gusts to 70 mph.

Hail in NORTHAMPTON, PENNSYLVANIA
From 17-AUG-07 16:10:00 to 17-AUG-07 16:22:00 (EST-5)
Location: BETHLEHEM
Magnitude: 2.00 
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The third severe thunderstorm of the day for Northampton County dropped a swath of hail as large as hen eggs (2 inches in diameter) across the central and southern parts of the county. The hen egg size hail fell over the higher terrain of Williams Township. Half dollar size hail fell in Bethlehem and penny size hail fell in Nazareth.

Hail in CARBON, PENNSYLVANIA
From 17-AUG-07 13:20:00 to 17-AUG-07 13:40:00 (EST-5)
Location: WEATHERLY
Magnitude: 2.50 
Property damage: 750.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Moth ball to tennis ball (2.5 inch diameter) hail fell across central and southeast Carbon County and caused considerable damage. In Nesquehoning, golf ball size hail covered the parking lot and damaged the vehicles of emergency responders at the 911 center. Hail as large as tennis balls fell in Franklin Township, as large as hen eggs around Palmerton, as large as quarters in Lehighton and as large as moth balls fell in Jim Thorpe. Hail also fell in Weatherly. Hail damage included broken home and vehicle windows, dented siding and broken skylights.

Thunderstorm Wind in NORTHAMPTON, PENNSYLVANIA
From 17-AUG-07 13:50:00 to 17-AUG-07 14:25:00 (EST-5)
Location: EDGEMONT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The second severe thunderstorm of the day tore down additional trees, tree limbs and power lines from Lehigh Township southeast through Nazareth Township. Scattered power outages in the county lasted through the morning of the 18th.

Hail in MONROE, PENNSYLVANIA
From 17-AUG-07 14:00:00 to 17-AUG-07 14:00:00 (EST-5)
Location: BRODHEADSVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny size hail fell from a severe thunderstorm in Brodheadsville (Chestnut Hill Township).

Hail in NORTHAMPTON, PENNSYLVANIA
From 17-AUG-07 14:10:00 to 17-AUG-07 14:10:00 (EST-5)
Location: CHERRYVILLE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A severe thunderstorm dropped nickel size hail in Lehigh Township.

Hail in NORTHAMPTON, PENNSYLVANIA
From 17-AUG-07 14:25:00 to 17-AUG-07 14:25:00 (EST-5)
Location: NAZARETH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail fell in Nazareth Township.

Thunderstorm Wind in CARBON, PENNSYLVANIA
From 17-AUG-07 15:50:00 to 17-AUG-07 15:50:00 (EST-5)
Location: LEHIGHTON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Another severe thunderstorm tore down a few additional trees and wires in Lehighton and Franklin Township.

Thunderstorm Wind in LEHIGH, PENNSYLVANIA
From 17-AUG-07 16:06:00 to 17-AUG-07 16:06:00 (EST-5)
Location: COPLAY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm tore down a few trees onto roadways in Whitehall Township.

Hail in NORTHAMPTON, PENNSYLVANIA
From 17-AUG-07 13:15:00 to 17-AUG-07 13:15:00 (EST-5)
Location: BETHLEHEM
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny size hail fell in Bethelehem.

Thunderstorm Wind in CHESTER, PENNSYLVANIA
From 17-AUG-07 13:15:00 to 17-AUG-07 13:15:00 (EST-5)
Location: WEST CHESTER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Scattered large tree limbs were tore down by a severe thunderstorm in central Chester County.

Funnel Cloud in CARBON, PENNSYLVANIA
From 17-AUG-07 13:35:00 to 17-AUG-07 13:40:00 (EST-5)
Location: JIM THORPE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A Skywarn spotter chased and saw a wall cloud and funnel cloud as a severe thunderstorm moved through Jim Thorpe and Lehighton.

Hail in CARBON, PENNSYLVANIA
From 17-AUG-07 14:00:00 to 17-AUG-07 14:05:00 (EST-5)
Location: PALMERTON
Magnitude: 2.75 
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Newspaper

A second severe thunderstorm of the day dropped baseball size hail in the Penn's Peak area of Penn Forest Township and quarter size hail in Palmerton.

Thunderstorm Wind in NORTHAMPTON, PENNSYLVANIA
From 17-AUG-07 13:15:00 to 17-AUG-07 13:35:00 (EST-5)
Location: BETHLEHEM
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm tore down several tree limbs and wires from Bethlehem east through Palmer Township.

Hail in BUCKS, PENNSYLVANIA
From 17-AUG-07 13:45:00 to 17-AUG-07 13:45:00 (EST-5)
Location: FERNDALE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm dropped nickel to quarter size hail in Ferndale (Nockamixon Township). Tree limbs were also pulled down by the gusty winds.