Flash Flood in Kings County, New York
Flash Flood August 21, 2021 – August 22, 2021 · Kings County, New York
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
All lanes were closed due to flooding on the northbound Brooklyn side of the Brooklyn Battery Tunnel in Carroll Gardens. The Clinton Street entrance to the tunnel was also closed.
The wider storm
Showers and thunderstorms streaming northward well ahead of approaching Hurricane Henri resulted in flash flooding across portions of New York City and Western Long Island. This rainfall developed in a moisture-rich environment, with the 8pm sounding from Upton, NY recording precipitable water values around 2.25 inches. Rainfall totals from this predecessor rainfall event ranged from 1-5 inches. The ASOS in Central Park recorded 4.45 inches of rain for August 21, a new record for the date, much of which fell within a three hour period from 9pm to midnight.
Began near New York (40.6749, -74.0012).
Source: NOAA Storm Events Database, event 981792. Narratives are written by the National Weather Service forecast office that issued the report.
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