Jul 22, 2011
Multicluster thunderstorms developed under an unstable airmass with limted wind shear over OH and PA. While the primary threat was wind damage, weak shear and sufficient moisture gave way for the threat of slow moving storms with heavy downpours, enhancing the flash flood threat.
Source: NOAA National Weather Service Storm Events Database (event 335362). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Greene County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.