Thunderstorm Wind — Northumberland, Pennsylvania

2025-06-19 · near Milton, Northumberland, Pennsylvania

Event narrative

A severe thunderstorm, producing wind gusts estimated near 70 mph, knocked down and uprooted multiple trees in Milton. Shingles were also blown off on some residences in Milton.

Wider weather episode

A cold frontal passage during the evening hours of June 19, 2025 brought a broken line of showers and thunderstorms to central Pennsylvania in a moderately sheared and unstable environment. Ahead of the cold front, unstable conditions with ample moisture and shear in place allowed for multiple clusters of severe thunderstorms to form along the western mountains, and continue eastward as the evening progressed. One of these clusters moved northward from eastern Maryland into York and Lancaster counties, producing multiple instances of tree damage across southern portions of each county. A cluster of thunderstorms across Clearfield and Centre counties produced multiple instances of tree damage before continuing to cause isolated tree damage into the Middle Susquehanna Valley. The most widespread damage was observed in eastern Union County and northern Northumberland County, where more thunderstorms began to bow out and produce widespread straight-line wind damage.

View location on OpenStreetMap → (41.0068, -76.8482)

Source: NOAA Storm Events Database, event_id 1267745. Narrative written by the NWS forecast office that issued the report.