Freezing Fog — Western Chester, Pennsylvania

2026-01-17 to 2026-01-18 · Western Chester, Pennsylvania

Event narrative

Several hours of dense freezing fog was observed at Chester County Airport.

Wider weather episode

A moist and stagnant air mass in the wake of a wet snowfall resulted in areas of dense freezing fog late on January 17th and early on January 18th. The fog dissipated before dawn as a cold front moved through.

Source: NOAA Storm Events Database, event_id 1308776. Narrative written by the NWS forecast office that issued the report.