Jul 4, 2023
A stalled frontal boundary over the area provided a focus for convection to develop in the afternoon on July 4th. CAPE values of greater than 2000 J/kg and PWAT values near 1.8-2 allowed thunderstorms that developed along the stationary front to slowly drift southward while producing torrential rainfall rates of 1-2 per hour. Some areas saw 1-3 of rain over a 1 to 3 hour period which produced localized flash flooding.
Source: NOAA National Weather Service Storm Events Database (event 1121893). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Middlesex County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.