Aug 27, 2021
A backdoor cold front approaching the area sparked a few widely scattered thunderstorms. These storms developed in a moisture-rich environment, with precipitable water values from the 8am Upton, NY sounding around 2 inches. With weak upper level flow resulting in slow storm motions and wet antecedent conditions as a result of rainfall associated with Tropical Storm Henri less than a week earlier, this resulted in isolated flash flooding in northeast New Jersey.
Source: NOAA National Weather Service Storm Events Database (event 982752). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Hudson County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.