Residual moisture behind a passing cold front provided enough instability across southern New York and northeast Pennsylvania for scattered showers and thunderstorms to develop during the afternoon. Some of the storms produced large hail and damaging winds.

Hail in SULLIVAN, NEW YORK
From 17-AUG-07 20:49:00 to 17-AUG-07 20:49:00 (EST-5)
Location: WURTSBORO
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in TOMPKINS, NEW YORK
From 17-AUG-07 18:10:00 to 17-AUG-07 18:10:00 (EST-5)
Location: TRUMANSBURG
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees were blown down throughout the Trumansburg and Dryden areas.

Thunderstorm Wind in BROOME, NEW YORK
From 17-AUG-07 18:35:00 to 17-AUG-07 18:35:00 (EST-5)
Location: WHITNEY PT
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down throughout northern portions of the county.

Thunderstorm Wind in CHENANGO, NEW YORK
From 17-AUG-07 18:40:00 to 17-AUG-07 18:40:00 (EST-5)
Location: COVENTRY
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down throughout the southern part of the county.

Thunderstorm Wind in CHEMUNG, NEW YORK
From 17-AUG-07 19:00:00 to 17-AUG-07 19:00:00 (EST-5)
Location: CHEMUNG
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and wires were blown down.

Hail in SULLIVAN, NEW YORK
From 17-AUG-07 20:26:00 to 17-AUG-07 20:26:00 (EST-5)
Location: SWAN LAKE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in BROOME, NEW YORK
From 17-AUG-07 19:05:00 to 17-AUG-07 19:05:00 (EST-5)
Location: BINGHAMTON
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down in Binghamton and Vestal.

Thunderstorm Wind in TIOGA, NEW YORK
From 17-AUG-07 19:05:00 to 17-AUG-07 19:05:00 (EST-5)
Location: LITCHFIELD
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees were blown down.

Thunderstorm Wind in DELAWARE, NEW YORK
From 17-AUG-07 19:15:00 to 17-AUG-07 19:15:00 (EST-5)
Location: SIDNEY
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down.

Thunderstorm Wind in DELAWARE, NEW YORK
From 17-AUG-07 19:25:00 to 17-AUG-07 19:25:00 (EST-5)
Location: WALTON
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down in Walton and Delhi.

Thunderstorm Wind in SULLIVAN, NEW YORK
From 17-AUG-07 20:45:00 to 17-AUG-07 20:45:00 (EST-5)
Location: WOODBOURNE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down.

Thunderstorm Wind in SENECA, NEW YORK
From 17-AUG-07 17:50:00 to 17-AUG-07 17:50:00 (EST-5)
Location: OVID
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wires were blown down by thunderstorm winds.

Thunderstorm Wind in CAYUGA, NEW YORK
From 17-AUG-07 18:05:00 to 17-AUG-07 18:05:00 (EST-5)
Location: MORAVIA VANS ARPT
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down across the southern part of the county.

Thunderstorm Wind in TOMPKINS, NEW YORK
From 17-AUG-07 18:15:00 to 17-AUG-07 18:15:00 (EST-5)
Location: ITHACA
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down throughout the city of Ithaca.

Thunderstorm Wind in CORTLAND, NEW YORK
From 17-AUG-07 18:27:00 to 17-AUG-07 18:27:00 (EST-5)
Location: HARFORD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large branches were broken off by thunderstorm winds.

Thunderstorm Wind in CHEMUNG, NEW YORK
From 17-AUG-07 18:40:00 to 17-AUG-07 18:40:00 (EST-5)
Location: HORSEHEADS
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees and wires were blown down.

Thunderstorm Wind in STEUBEN, NEW YORK
From 17-AUG-07 18:44:00 to 17-AUG-07 18:44:00 (EST-5)
Location: CORNING
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Trees were blown down by thunderstorm winds.