Jul 12, 2021
A warm front across the area during the early morning hours gradually sank southward towards evening, providing a focusing mechanism for the development of showers and thunderstorms across northeast New Jersey. These storms developed in a moist environment, with precipitable water values greater than 2 inches, and relatively weak low level flow. In addition, antecedent conditions were quite wet, with 3-5+ inches of rain falling across the area the week before. These conditions combined to result
Source: NOAA National Weather Service Storm Events Database (event 976703). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Passaic County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.