Aug 22, 2021
Rainfall from Tropical Storm Henri resulted in isolated flash flooding across portions of southern Connecticut. With tropical airmass in place (precipitable water values greater than 2 inches), rainfall totals generally ranged from 1-3 inches, highest across portions of Middlesex and New London counties. The ASOS at Groton Airport reported 2.61 inches of rain while a trained spotter near Ledyard Center reported 3.70 inches.
Source: NOAA National Weather Service Storm Events Database (event 981827). 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.