A pre-frontal trough caused scattered severe thunderstorms to develop across Southeast New York, including a tornado in Orange County. Some of the storms produced very heavy rain which led to flash flooding in New York City.

Lightning in WESTCHESTER, NEW YORK
From 29-JUL-09 14:05:00 to 29-JUL-09 14:05:00 (EST-5)
Location: TUCKAHOE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A female standing by a third floor window at 1 Cedar Lane was struck and injured by lightning.

Tornado in ORANGE, NEW YORK
From 29-JUL-09 14:05:00 to 29-JUL-09 14:07:00 (EST-5)
Location: UNIONVILLE
Tornado F-scale: EF0
Property damage: 75.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Based on a damage survey conducted by the NWS Mount Holly New Jersey Office in conjunction with the Orange County Office of Emergency Management, along with evidence from Doppler Weather Radar and photographs, it was confirmed that an EF0 tornado struck Unionville. Dozens of trees and a multitude of large tree branches fell across streets, and upon several houses and cars.

This tornado was produced by the same severe thunderstorm that produced an EF2 tornado in Wantage New Jersey just minutes earlier during the afternoon on July 29th.

Thunderstorm Wind in RICHMOND, NEW YORK
From 29-JUL-09 13:38:00 to 29-JUL-09 13:38:00 (EST-5)
Location: GREAT KILLS
Magnitude: 52.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Public

Large tree limbs were reported down on Leverette Avenue in Great Kills.

Lightning in RICHMOND, NEW YORK
From 29-JUL-09 14:14:00 to 29-JUL-09 14:14:00 (EST-5)
Location: ST GEORGE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A female, age 49, was injured while in contact with scaffolding at the Richmond County Family Court Building, 100 Richmond Terrace, when it was struck by lightning.

Flash Flood in KINGS, NEW YORK
From 29-JUL-09 14:38:00 to 29-JUL-09 14:53:00 (EST-5)
Location: NEW YORK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Clark St. was closed at the Brooklyn Queens Expressway due to flooding.

Flash Flood in BRONX, NEW YORK
From 29-JUL-09 15:28:00 to 29-JUL-09 15:43:00 (EST-5)
Location: BRONX
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

In the neighborhood of Morrisania in the Bronx, 3rd Ave. in the vicinity of the Bronx-Lebanon Hospital was closed due to flooding.

Flash Flood in RICHMOND, NEW YORK
From 29-JUL-09 14:40:00 to 29-JUL-09 14:55:00 (EST-5)
Location: WILLOWBROOK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The entrance to the westbound Staten Island Expressway (I-278) from Richmond Ave. was closed due to flooding.  In addition, floodwaters were 1-2 ft high on Richmond Terrance near Nicholas Ave. in the neighboorhood of Port Richmond.

Flash Flood in NEW YORK, NEW YORK
From 29-JUL-09 15:00:00 to 29-JUL-09 15:15:00 (EST-5)
Location: NEW YORK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Southbound FDR Drive was closed due to flooding at 14th St.

Flash Flood in NEW YORK, NEW YORK
From 29-JUL-09 15:28:00 to 29-JUL-09 15:43:00 (EST-5)
Location: NEW YORK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Exit 5 (Houston St.) on the FDR Drive southbound was closed due to flooding.

Thunderstorm Wind in ROCKLAND, NEW YORK
From 29-JUL-09 13:15:00 to 29-JUL-09 13:15:00 (EST-5)
Location: GARNERSVILLE
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was reported down along Zukor Road.

Thunderstorm Wind in QUEENS, NEW YORK
From 29-JUL-09 15:00:00 to 29-JUL-09 15:00:00 (EST-5)
Location: WOODSIDE
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A traffic sign was reported down on the Grand Central Parkway.

Thunderstorm Wind in NASSAU, NEW YORK
From 29-JUL-09 19:30:00 to 29-JUL-09 19:30:00 (EST-5)
Location: BELLEROSE
Magnitude: 52.00 EG
Property damage: 0.75K
Crop damage: 0.00K
Reported by: Trained Spotter

A large tree limb was blocking the westbound lane of Floral Boulevard.

Hail in RICHMOND, NEW YORK
From 29-JUL-09 13:38:00 to 29-JUL-09 13:38:00 (EST-5)
Location: GREAT KILLS
Magnitude: 0.75 
Reported by: Public

Penny size hail was reported in Great Kills.