Jul 2, 2013
A surface front stalled just north of Southern New England resulted in a warm, unstable, moist airmass across southern New Hampshire. Plenty of instability and a 30-40 knot low level jet resulted in showers and thunderstorms while preciptable water values above 2 inches resulted in heavy rain and subsequently, flash flooding in Cheshire County. The Governor of New Hampshire declared a state of emergency on July 3 for flooding in Cheshire County as well as Grafton and Sullivan Counties.
Source: NOAA National Weather Service Storm Events Database (event 462091). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Cheshire County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.