Jul 10, 2023
A stalled frontal boundary remained over the area which produced multiple rounds of torrential rainfall form heavy thunderstorms from July 9th through July 10th. CAPE values of 2500 to 3500 J/kg and PWAT values of near 1.8 allowed heavy thunderstorm development to produce rainfall rates of 2-3 inches per hour at times. There were parts of the area that receive anywhere from 3-5 inches of rain in a several hour period.
Source: NOAA National Weather Service Storm Events Database (event 1122295). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in New London County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.