Sep 12, 2013
A pre-frontal surface trough developed over southern New England, providing a focus for low level convection. Plenty of instability, as well as a strong upper jet aloft, allowed several of these storms to become severe, producing damaging winds. A very moist, tropical-like atmosphere resulted in very heavy rainfall which produced flash flooding, mainly across southwestern New Hampshire.
Source: NOAA National Weather Service Storm Events Database (event 469862). 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.