Jul 7, 2017
Developing low pressure passing near the region in a high precipitable water environment (2.27 on the 12Z 7/7 OKX sounding) resulted in heavy rainfall across much of the region that led to isolated flash flooding and river flooding across parts of the Lower Hudson Valley. ||Rainfall amounts ranged from 1-2.5 across the area, with reports of 2.16 of rain in Nanuet from an IFLOWS gauge and 1.96 in Armonk from CoCoRaHS. This resulted in isolated flash flooding in Westchester County and the Mahwah R
Source: NOAA National Weather Service Storm Events Database (event 711927). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Westchester County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.