A massive convective complex moved from lower Michigan across southern Ontario near Toronto then dove southeast across the Niagara Frontier and Western Southern Tier. Damage reports were fairly widespread across the area with downed power lines, limbs and trees. Power outages resulted from the downed power lines. Several homes and automobiles were damaged by felled trees. The heavy rains that accompanied the thunderstorms produced some flash flooding in Chautauqua County. Small creeks overflowed and parking lots were flooded in Jamestown. In Lakewood, numerous roads and viaducts were flooded and closed.

Thunderstorm Wind in WYOMING, NEW YORK
From 09-AUG-09 12:31:00 to 09-AUG-09 12:31:00 (EST-5)
Location: NORTH GAINESVILLE
Magnitude: 50.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were downed by thunderstorm winds.

Thunderstorm Wind in WYOMING, NEW YORK
From 09-AUG-09 12:40:00 to 09-AUG-09 12:40:00 (EST-5)
Location: JAVA CENTER
Magnitude: 50.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WYOMING, NEW YORK
From 09-AUG-09 12:40:00 to 09-AUG-09 12:40:00 (EST-5)
Location: LAMONT
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees and wires were downed by thunderstorm winds.

Thunderstorm Wind in ERIE, NEW YORK
From 09-AUG-09 12:50:00 to 09-AUG-09 12:50:00 (EST-5)
Location: SPRINGVILLE
Magnitude: 50.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees and wires were downed by thunderstorm winds.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 09-AUG-09 13:25:00 to 09-AUG-09 13:25:00 (EST-5)
Location: HINSDALE
Magnitude: 50.00 MG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 09-AUG-09 13:00:00 to 09-AUG-09 13:00:00 (EST-5)
Location: ASHFORD
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and wires were downed by thunderstorm winds.

Thunderstorm Wind in NIAGARA, NEW YORK
From 09-AUG-09 11:20:00 to 09-AUG-09 11:20:00 (EST-5)
Location: ESCARPMENT
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and wires were downed by thunderstorm winds.

Thunderstorm Wind in NIAGARA, NEW YORK
From 09-AUG-09 11:25:00 to 09-AUG-09 11:25:00 (EST-5)
Location: NEWFANE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and wires were downed by thunderstorm winds.

Thunderstorm Wind in ERIE, NEW YORK
From 09-AUG-09 12:15:00 to 09-AUG-09 12:15:00 (EST-5)
Location: EAST AURORA
Magnitude: 50.00 EG
Property damage: 12.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and wires were downed by thunderstorm winds.

Thunderstorm Wind in ERIE, NEW YORK
From 09-AUG-09 12:20:00 to 09-AUG-09 12:20:00 (EST-5)
Location: FOREST GLEN
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and wires were downed by thunderstorm winds.

Thunderstorm Wind in ERIE, NEW YORK
From 09-AUG-09 12:22:00 to 09-AUG-09 12:22:00 (EST-5)
Location: EDEN
Magnitude: 50.00 EG
Property damage: 12.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and wires were downed by thunderstorm winds.

Flash Flood in CHAUTAUQUA, NEW YORK
From 09-AUG-09 13:30:00 to 09-AUG-09 15:30:00 (EST-5)
Location: JAMESTOWN
Flood cause: Heavy Rain
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flash Flood in CHAUTAUQUA, NEW YORK
From 09-AUG-09 14:00:00 to 09-AUG-09 16:00:00 (EST-5)
Location: LAKEWOOD
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement