Jun 14, 2025
Ample moisture and a near-stationary boundary assisted in the development of slow moving thunderstorms late on June 14th. Precipitable water values exceeding 90% of climatology, which supported efficient rainfall. Catastrophic flash flooding occurred in portions of Wheeling WV and that complex of storms expanded eastward, dumping 2-3 inches in an hour over portions of Washington county as well. There were several reports of stranded vehicles and flooding around an into some homes.
Source: NOAA National Weather Service Storm Events Database (event 1278744). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Allegheny County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.