Jul 17, 2021
Scattered showers and thunderstorms develop during the early afternoon hours of July 17, 2021 across western Pennsylvania and in the Lower Susquehanna Valley in an anomalously humid airmass ahead of an approaching cold front. The storms over the Lower Susquehanna Valley developed on a weak boundary in a high CAPE environment, and produced sporadic wind damage before moving to the east. The storms over western Pennsylvania eventually congealed into a broken line that progressed eastward across ce
Source: NOAA National Weather Service Storm Events Database (event 971594). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in McKean County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.