Jul 17, 2021
Showers and thunderstorms formed ahead of a crossing cold front on July 17th. An upper speed max rotating through an upper trough to the west provided support for lift through right entrance region jet dynamics. Sufficient instability and shear were present to allow storms to organize into clusters and line segments. There were scattered instances of tree damage, and also a report of flash flooding in Venango County due to downpours in the moisture-rich environment.
Source: NOAA National Weather Service Storm Events Database (event 973027). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Venango County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.