Oct 24, 2017
A slow moving cold front approached the area during the evening of October 24th as a wave of low pressure formed along the Mid Atlantic coast. With precipitable water values of 1.75 and higher across the region, this led to heavy rain across much of Long Island, with isolated flash flooding reported in Suffolk County. Numerous reports of 2-4 inches of rain were received across this region, with a CoCoRaHS observer measuring 3.40 inches in Commack.
Source: NOAA National Weather Service Storm Events Database (event 723765). 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.