A combination of a passing pre-frontal trough and an approaching cold front spawned multiple severe thunderstorms across the Lower Hudson Valley.

Thunderstorm Wind in ROCKLAND, NEW YORK
From 10-AUG-09 19:33:00 to 10-AUG-09 19:33:00 (EST-5)
Location: NEW CITY
Magnitude: 56.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

A maple tree was reported snapped in half at 2 Ember Drive in New City.

Thunderstorm Wind in WESTCHESTER, NEW YORK
From 10-AUG-09 19:40:00 to 10-AUG-09 19:40:00 (EST-5)
Location: PLEASANTVILLE
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm winds damaged trees and power lines in Briarcliff Manor.

Thunderstorm Wind in WESTCHESTER, NEW YORK
From 10-AUG-09 19:41:00 to 10-AUG-09 19:41:00 (EST-5)
Location: MILLWOOD
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm winds damaged trees and power lines in New Castle.

Thunderstorm Wind in WESTCHESTER, NEW YORK
From 10-AUG-09 19:42:00 to 10-AUG-09 19:42:00 (EST-5)
Location: OSSINING
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Department of Highways

A tree was reported down on New York State Route 9A near Ryder Road.

Thunderstorm Wind in WESTCHESTER, NEW YORK
From 10-AUG-09 19:59:00 to 10-AUG-09 19:59:00 (EST-5)
Location: POCANTICO HILLS
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Department of Highways

A tree was reported down on New York Route 117 between US Route 9 and the Rockefeller Estate.

Thunderstorm Wind in WESTCHESTER, NEW YORK
From 10-AUG-09 19:59:00 to 10-AUG-09 19:59:00 (EST-5)
Location: THORNWOOD
Magnitude: 52.00 EG
Property damage: 1.50K
Reported by: Broadcast Media

Wheeler Avenue in Pleasantville was closed due to a downed tree.

Thunderstorm Wind in WESTCHESTER, NEW YORK
From 10-AUG-09 20:02:00 to 10-AUG-09 20:02:00 (EST-5)
Location: CHAPPAQUA
Magnitude: 52.00 EG
Property damage: 3.00K
Reported by: Newspaper

New York Route 120 was closed between Pine Cliff and Commodore Roads due to downed trees and tree limbs in the town of Chappaqua.

Thunderstorm Wind in WESTCHESTER, NEW YORK
From 10-AUG-09 20:18:00 to 10-AUG-09 20:18:00 (EST-5)
Location: COUNTRY RIDGE ESTATE
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Law Enforcement

A tree was reported down on Kings Street in Rye Brook.

Thunderstorm Wind in ORANGE, NEW YORK
From 10-AUG-09 19:03:00 to 10-AUG-09 19:03:00 (EST-5)
Location: PINE BUSH
Magnitude: 50.00 MG
Reported by: Trained Spotter

A spotter measured a gust of 58 mph in Crawford.

Thunderstorm Wind in WESTCHESTER, NEW YORK
From 10-AUG-09 19:44:00 to 10-AUG-09 19:44:00 (EST-5)
Location: TARRYTOWN
Magnitude: 55.00 MG
Reported by: Mesonet

A gust of 63 mph was measured at a mesonet site located near the east end of the Tappen Zee Bridge.

Thunderstorm Wind in ORANGE, NEW YORK
From 10-AUG-09 18:42:00 to 10-AUG-09 18:42:00 (EST-5)
Location: WARWICK
Magnitude: 61.00 EG
Property damage: 7.50K
Reported by: Law Enforcement

Numerous trees were reported down in Warwick.

Thunderstorm Wind in ORANGE, NEW YORK
From 10-AUG-09 19:02:00 to 10-AUG-09 19:02:00 (EST-5)
Location: WARWICK
Magnitude: 52.00 EG
Property damage: 0.75K
Reported by: Department of Highways

A tree was reported down on New York State Highway 94 north of Warwick.

Thunderstorm Wind in ROCKLAND, NEW YORK
From 10-AUG-09 19:19:00 to 10-AUG-09 19:19:00 (EST-5)
Location: STONY PT
Magnitude: 61.00 EG
Property damage: 25.00K
Reported by: Law Enforcement

Numerous trees were reported down in Stony Point, including some into houses. In addition, numerous wires were reported down as well.

Thunderstorm Wind in ORANGE, NEW YORK
From 10-AUG-09 19:29:00 to 10-AUG-09 19:29:00 (EST-5)
Location: GARDNERTOWN
Magnitude: 52.00 EG
Property damage: 1.50K
Reported by: Trained Spotter

Numerous large tree limbs were reported down on Gardnertown Road near Route 52.

Thunderstorm Wind in WESTCHESTER, NEW YORK
From 10-AUG-09 19:38:00 to 10-AUG-09 19:38:00 (EST-5)
Location: CROTON HGTS
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Department of Highways

A tree was reported down on New York Route 129 on the East side of Hunter Brook Bridge.

Funnel Cloud in ORANGE, NEW YORK
From 10-AUG-09 19:30:00 to 10-AUG-09 19:30:00 (EST-5)
Location: GARDNERTOWN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A funnel cloud was reported on North Plank Road near Cronomer Hill Park.

Thunderstorm Wind in ROCKLAND, NEW YORK
From 10-AUG-09 19:32:00 to 10-AUG-09 19:32:00 (EST-5)
Location: GARNERVILLE
Magnitude: 61.00 EG
Property damage: 1.50K
Reported by: Newspaper

A large tree fell into a pool in the town of Garnerville.

Thunderstorm Wind in WESTCHESTER, NEW YORK
From 10-AUG-09 20:00:00 to 10-AUG-09 20:00:00 (EST-5)
Location: PLEASANTVILLE
Magnitude: 61.00 EG
Property damage: 7.50K
Reported by: Law Enforcement

Numerous trees were reported down throughout Pleasantville, including some down on wires, causing sporadic power outages.