Flash Flood in Richmond County, New York
Flash Flood August 27, 2021 · Richmond County, New York
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Staten Island Railway train service was suspended in both directions between Huguenot and Tottenville due to flooded tracks.
The wider storm
A backdoor cold front approached the area during the afternoon before stalling across the region during the evening and overnight. This front sparked a few widely scattered thunderstorms in a moisture rich environment, with precipitable water values from both the 8am and 8pm soundings from Upton, NY measuring around 2 inches. With weak upper level flow resulting in slow storm motions and wet antecedent conditions as a result of rainfall associated with Tropical Storm Henri less than a week earlier, this resulted in isolated flash flooding in Staten Island during the afternoon and across parts of Suffolk County overnight.
Began near Richmond Vly (40.5134, -74.2521).
Source: NOAA Storm Events Database, event 982768. Narratives are written by the National Weather Service forecast office that issued the report.
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