Jul 22, 2019
Flow parallel to a stalled frontal boundary across the region allowed showers and thunderstorms to train across the region during the afternoon and evening hours. These storms developed in an environment with precipitable water values around 2.25 inches and produced widespread 1-2 inch rainfall amounts across the region. The Central Park ASOS reported 1.57 inches of rain in this event, with much of that falling within a 1-2 hour period.
Source: NOAA National Weather Service Storm Events Database (event 848600). 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.