Jul 9, 2023
A stalled frontal boundary remained over the area which produced multiple rounds of torrential rainfall form heavy thunderstorms from July 9th through July 10th. CAPE values of 2500 to 3500 J/kg and PWAT values of near 1.8 allowed heavy thunderstorm development to produce rainfall rates of 2-3 inches per hour at times. There were parts of the area that receive anywhere from 3-5 inches of rain in a several hour period with some spots seeing upwards of 8 inches. This allowed for the issuance of a
Source: NOAA National Weather Service Storm Events Database (event 1121961). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Rockland County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.