Jun 9, 2021
A cold front dropped southward across the region and interacted with modestly moist and unstable conditions. A humid boundary layer was in place as evidenced by surface dewpoints in the upper 60s to lower 70s. All of this worked to generate widespread thunderstorms mid-afternoon into the early evening over the Southern Tier. A cold front came through in pieces though with first a wind shift to the north noted as early as the early afternoon over Southern Tier, however lower dewpoints failed to a
Source: NOAA National Weather Service Storm Events Database (event 968824). 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.