Aug 13, 2014
A surface low with its associated warm front approached the area early in the morning before partially lifting through. This boundary provided the focus for very heavy rain in an extremely moist air mass and resulted in historic flash flooding on Long Island. New York State's 24 hour rainfall record was broken with 13.78 inches of rainfall being reported by the Automated Surface Observing System at Islip MacArthur Airport.
Source: NOAA National Weather Service Storm Events Database (event 542776). 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.