Sep 11, 2023
Heavy thunderstorms developed in an unstable and moist environment on September 11th, 2023 and produced flash flooding in New York. Thunderstorms developed along a stationary front that was draped over the area in an environment with 2000-2500 J/kg of SBCAPE and 1.7-1.9 inches of PWAT. The thunderstorms produced rainfall rates of 1 to 2 inches per hour and a total of 1-3 inches of rainfall in a couple of hours.
Source: NOAA National Weather Service Storm Events Database (event 1135610). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Westchester County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.