Thunderstorm Wind — Franklin, Pennsylvania

2021-08-13 · near Williamson, Franklin, Pennsylvania

Event narrative

A severe thunderstorm producing winds estimated near 60 mph produced multiple reports of trees and wires down west of Greencastle.

Wider weather episode

Scattered showers and storms developed in a very warm and very humid airmass over central Pennsylvania during the afternoon of August 13, 2021, well ahead of an approaching cold front over the eastern Great Lakes. Several of these storms produced wind damage, particularly a cluster of storms that pushed eastward from the southern Alleghenies into the Lower Susquehanna Valley.

View location on OpenStreetMap → (39.8200, -77.7800)

Source: NOAA Storm Events Database, event_id 977145. Narrative written by the NWS forecast office that issued the report.