Jun 15, 2017
Moist antecedent conditions in conjunction with a passing shortwave helped to produce yet another round of thunderstorms with heavy rain across southwestern Pennsylvania. Southern Allegheny county, Pennsylvania was hardest hit, once again. There were also a few reports off wind damage with a bit more support for downbursts.
Source: NOAA National Weather Service Storm Events Database (event 711442). 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.