Jun 18, 2012
An upper level shortwave helped support an mesoscale convective system as it crossed ohio. This system weakened as it reached eastern Ohio but not before some wind damage was reported. Thunderstorms out ahead of the system also caused flash flooding to areas of western Pennsylvania.
Source: NOAA National Weather Service Storm Events Database (event 391084). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Washington County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.