Flash Flood — Richmond, New York

2021-08-27 · near Richmond Vly, Richmond, New York

Event narrative

Staten Island Railway train service was suspended in both directions between Huguenot and Tottenville due to flooded tracks.

Wider weather episode

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.

View location on OpenStreetMap → (40.5134, -74.2521)

Source: NOAA Storm Events Database, event_id 982768. Narrative written by the NWS forecast office that issued the report.