Sep 9, 2018
Tropical Storm Gordon came ashore along the central Gulf Coast on the night of September 4th. The tropical cyclone dissipated over Missouri by the night of September 7th. Moisture from the decaying tropical system interacted with a surface low and frontal boundary, spreading widespread heavy rainfall across the region over a 3 day period and creating widespread flooding. 72 hour totals across southwest Pennsylvania from 2 inches to a little over 7 inches. Storm rainfall total for Pittsburgh ran
Source: NOAA National Weather Service Storm Events Database (event 785566). 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.