Jul 11, 2021
Scattered thunderstorms developed in a moderate CAPE, moderate shear environment just south of a warm front that was draped from northwest to southeast across central Pennsylvania during the afternoon of July 11, 2021. Several of the storms produced wind damage, and a few storms exhibited rotation near the warm front. One slower moving thunderstorm brought urban flash flooding to Harrisburg.
Source: NOAA National Weather Service Storm Events Database (event 971586). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Dauphin County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.