Thunderstorm Wind — Clarion, Pennsylvania

2024-11-20 · near Rimersburg, Clarion, Pennsylvania

Event narrative

Trees were reported to be blown down in Rimersburg.

Wider weather episode

Deep upper level low pressure moved into the western Great Lakes on November 20th. A strong shortwave rotating around this upper low across Ohio helped to drive a cold front across the Upper Ohio Valley during the late afternoon hours. A thin line of showers accompanied the front, with little to no lightning. The front worked with sufficient instability aloft to bring strong wind gusts to the surface, with several in the 45 to 60 MPH range according to various observations. These gusts were responsible for the many reports of wind damage received across southwest Pennsylvania. Strong low-level shear and weakly veered wind profiles also supported a brief tornado on the north side of Pittsburgh.

View location on OpenStreetMap → (41.0400, -79.5000)

Source: NOAA Storm Events Database, event_id 1224610. Narrative written by the NWS forecast office that issued the report.