Jul 9, 2021
Tropical Storm Elsa tracked across the eastern portion of the area during the morning hours of July 9, with heavy rainfall north and west of the storm's center resulting in flash flooding across portions of Long Island and the Lower Hudson Valley. Rainfall totals ranged from 1.5-4 inches, highest across Long Island. New York State Mesonet stations measured 3.27 inches in Wantagh and 3.44 inches in Stony Brook. An automated weather station measured 1.79 inches in New Rochelle. The ASOS at Islip A
Source: NOAA National Weather Service Storm Events Database (event 976663). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Suffolk County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.