Pittsburgh, Pa. – Snow will move into western Pennsylvania after midnight, marking the region’s first widespread winter storm of the season and creating dangerous travel conditions for the Tuesday morning commute. Most areas, including Pittsburgh, Butler, and Washington, can expect 3 to 5 inches of snow by late Tuesday morning, according to the National Weather Service in Pittsburgh.
The heaviest snow is expected between 4 and 8 a.m., reducing visibility and making untreated roads slick during rush hour. Farther southeast, in the Mon Valley toward Morgantown, a brief mix with rain may limit totals to around 1 to 2 inches. Across the Laurel Highlands and Allegheny ridges, light freezing rain could produce a thin glaze of ice before snow tapers off.
Travelers are urged to allow extra time, slow down, and use caution on bridges and overpasses where icing is more likely. PennDOT crews will be out early treating major highways, including I-79, I-70, and the Pennsylvania Turnpike, but conditions may remain hazardous through the morning.
Snow is expected to diminish by early afternoon Tuesday, though lingering flurries could persist into the evening as colder air settles over the region.
Winter Weather Advisories remain in effect through Tuesday morning.
