Aug 9, 2022
A cold front moving through the area forced thunderstorm development late in the day on August 9th. These slow moving thunderstorms developed in an area of 2 to 2.2 inches of precipitable water with CAPE values near 2000 J/kg. These thunderstorms dropped a quick 1 to 1.5 inches of rainfall in less than an hour, producing localized flash flooding.
Source: NOAA National Weather Service Storm Events Database (event 1052846). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Nassau County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.