Sep 12, 2018
Showers and thunderstorms developed along a stationary front draped across southern Connecticut during the afternoon of September 12th. The 8am sounding from Upton, NY recorded a precipitable water value of 2.16 inches, a record for the date based on the Storm Prediction Center's sounding climatology. This resulted in very heavy downpours and flash flooding over southeast Connecticut. A cooperative observer in Norwich reported 4.62 inches of rain with these storms, the bulk of which fell over a
Source: NOAA National Weather Service Storm Events Database (event 784178). 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.