Jun 12, 2012
A slow moving cold front was crossing the lower Great Lakes late in the afternoon while a moisture rich airmass sat across Western New York. Thunderstorms developed along what appeared to be a lake breeze boundary ahead of the surface cold front. As these storms pushed further inland, they intensified and become more widespread with clusters of storms producing rainfall in excess of two inches per hour. This resulted in flash flooding in parts of Cattaraugus and Allegany counties. Several roads
Source: NOAA National Weather Service Storm Events Database (event 394860). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Allegany County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.