Jul 6, 2017
Slow-moving thunderstorms with heavy rain developed along a stalled boundary across the upper Ohio Valley on the 5th through the 6th. A very warm and moist conditions supported heavy rainfall rates that lead to flooding in several counties across the region. The worst, was the city of Butler, in Pennsylvania as a storm remained nearly stationary of the city for almost 2 hours. Multiple water rescues took place across the city, with water several feet high in places.
Source: NOAA National Weather Service Storm Events Database (event 716389). 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.