Rainfall from Tropical Storm Henri resulted in widespread flash flooding across southeastern New York, particularly portions of the Lower Hudson Valley. With a tropical airmass in place (precipitable water values greater than 2 inches), rainfall totals generally ranged from 2-5 inches, with this rain coming in addition to the 2-5 inches that fell during the predecessor rainfall event the night before. This resulted in widespread rainfall amounts of 3-6 inches in many locations over a 24-36 hour period. The ASOS in Central Park recorded an additional 3.39 inches of rain, for a total of 7.84 inches across the two days.

Flash Flood in QUEENS, NEW YORK
From 22-AUG-21 14:42:00 to 22-AUG-21 16:55:00 (EST-5)
Location: RICHMOND HILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Tuskegee Airmen Way in Jamaica, Queens was closed due to flooding.

Flash Flood in WESTCHESTER, NEW YORK
From 22-AUG-21 13:55:00 to 22-AUG-21 16:45:00 (EST-5)
Location: ELMSFORD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Both directions of NY 119 (Tarrytown Road) were closed due to flooding at Knollwood Road in Elmsford.

Flash Flood in WESTCHESTER, NEW YORK
From 22-AUG-21 13:59:00 to 22-AUG-21 16:45:00 (EST-5)
Location: VALHALLA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The Taconic State Parkway was closed in both directions in Hawthorne due to flooding between Stevens Avenue and Commerce Street.

Flash Flood in WESTCHESTER, NEW YORK
From 22-AUG-21 14:22:00 to 22-AUG-21 16:45:00 (EST-5)
Location: THORNWOOD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The Saw Mill River Parkway was closed in both directions due to flooding at Manville Road in Pleasantville.

Flash Flood in WESTCHESTER, NEW YORK
From 22-AUG-21 14:32:00 to 22-AUG-21 16:45:00 (EST-5)
Location: ELMSFORD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The northbound lanes of the Saw Mill River Parkway in Elmsford were closed due to flooding at West Main Street.

Flash Flood in NASSAU, NEW YORK
From 22-AUG-21 14:30:00 to 22-AUG-21 16:55:00 (EST-5)
Location: SOUTH VLY STREAM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Rockaway Avenue in Valley Stream was closed due to flooding.

Flash Flood in WESTCHESTER, NEW YORK
From 22-AUG-21 14:34:00 to 22-AUG-21 16:45:00 (EST-5)
Location: GREENBURGH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The Bronx River Parkway was closed in Greenville due to flooding.

Flash Flood in WESTCHESTER, NEW YORK
From 22-AUG-21 14:24:00 to 22-AUG-21 16:45:00 (EST-5)
Location: ELMSFORD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The Sprain Brook Parkway was closed northbound in Elmsford due to flooding.

Flash Flood in ROCKLAND, NEW YORK
From 22-AUG-21 15:08:00 to 22-AUG-21 16:45:00 (EST-5)
Location: GERMONDS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

North Main Street in Hillcrest was closed due to flooding.

Flash Flood in ROCKLAND, NEW YORK
From 22-AUG-21 16:15:00 to 22-AUG-21 16:45:00 (EST-5)
Location: SPRING VLY ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

West Clarkstown Road in New City was closed due to flooding.

Flash Flood in WESTCHESTER, NEW YORK
From 22-AUG-21 16:01:00 to 22-AUG-21 16:45:00 (EST-5)
Location: TUCKAHOE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flooding was reported at the Crestwood Lake Apartments on Beaumont Circle in Yonkers.

Flash Flood in KINGS, NEW YORK
From 22-AUG-21 16:25:00 to 22-AUG-21 16:55:00 (EST-5)
Location: BROOKLYN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Parkside Avenue was flooded between Coney Island Avenue and Ocean Avenue in Flatbush, Brooklyn.

Flash Flood in WESTCHESTER, NEW YORK
From 22-AUG-21 18:06:00 to 22-AUG-21 20:18:00 (EST-5)
Location: MT VERNON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

All lanes were closed in both directions due to flooding on the Bronx River Parkway in Mount Vernon between Exit 10A (Yonkers Avenue) and Exit 10B (Bronx River Road).

Flash Flood in QUEENS, NEW YORK
From 22-AUG-21 16:00:00 to 22-AUG-21 16:55:00 (EST-5)
Location: WOODHAVEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A car was stalled in high water on Woodhaven Boulevard in Rego Park, Queens.

Flash Flood in WESTCHESTER, NEW YORK
From 22-AUG-21 19:48:00 to 22-AUG-21 20:18:00 (EST-5)
Location: EAST VIEW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Route 9A was closed in both directions due to flooding in the vicinity of Saw Mill River Road in Ardsley.

Flash Flood in ROCKLAND, NEW YORK
From 22-AUG-21 16:51:00 to 22-AUG-21 20:18:00 (EST-5)
Location: CENTRAL NYACK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The ramp from Route 303 to westbound Route 59 in Central Nyack was closed due to flooding with a car stranded.

Flood in BRONX, NEW YORK
From 22-AUG-21 18:45:00 to 23-AUG-21 06:15:00 (EST-5)
Location: FORDHAM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Bronx River at the Bronx Botanical Gardens rose above minor flood stage (3.0 feet) at 6:45pm EST on August 22. It then continued to rise, exceeding moderate flood stage (3.5 feet) at 8:45pm EST before cresting at a height of 3.83 feet at 11:30pm EST. The river fell below moderate flood stage at 3:45am EST on August 23, then below minor flood stage at 6:15am EST.

Flash Flood in WESTCHESTER, NEW YORK
From 22-AUG-21 16:29:00 to 22-AUG-21 16:45:00 (EST-5)
Location: PELHAM MANOR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

All lanes were closed due to flooding on the northbound Hutchinson River Parkway between I-95 and Exit 13 (Mamaroneck Avenue) in Pelham.