Thunderstorm Wind — York, Pennsylvania

2025-12-19 · near Seven Vlys, York, Pennsylvania

Event narrative

A line of gusty showers producing wind gusts estimated at 60 mph knocked a tree down onto a house in Seven Valleys. This line of showers also produced widespread damage to power lines across York County. No injuries were reported.

Wider weather episode

A strong area of low pressure stationed across northern Ontario allowed for a potent cold front to cross central Pennsylvania during the early morning hours of December 19, 2025. A strong line of gusty showers along the front caused multiple instances of measured wind gusts exceeding 58 mph in Clearfield, Dauphin, and Lancaster counties throughout the morning and afternoon hours. This line of gust showers also produced widespread tree damage in York and Lebanon counties during the afternoon hours, with no injuries reported. In the wake of the cold front, northwesterly flow allowed for a brief period of lake effect snow squalls, impacting portions of Interstate 99 and US Route 22 as the area of low pressure raced northeast.

View location on OpenStreetMap → (39.8535, -76.7699)

Source: NOAA Storm Events Database, event_id 1303003. Narrative written by the NWS forecast office that issued the report.