Ice Storm Warning, Winter Weather Advisories to begin Friday for parts of our area

UPDATE 3 P.M. THURSDAY: An Ice Storm Warning and Winter Weather Advisories take effect Friday for parts of our area.

An Ice Storm Warning will be in effect from 10 a.m. Friday to 7 a.m. Saturday for Armstrong County, Indiana County and higher elevations of Westmoreland County.

The National Weather Service in Pittsburgh says significant icing is expected, with total snow accumulations up to half an inch and ice accumulations between 2/10 and 3/10 of an inch.

Impacts may be felt on roads, especially bridges and overpasses, which could become slick and hazardous, the NWS says. Power outages and tree damage are likely, and post-holiday travel could become dangerous.

A Winter Weather Advisory will be in effect Friday from 8 a.m. to 3 p.m. for Beaver, Allegheny and Washington counties.

The NWS says freezing rain is expected. Total ice accumulations will range from a glaze to 1/10 of an inch.

Impacts may be felt on roads, especially bridges and overpasses, which could become slick and hazardous, the NWS says. Slippery road conditions should be expected and may impact post-holiday travel.

A Winter Weather Advisory will be in effect from 8 a.m. Friday to 1 a.m. Saturday for Mercer, Lawrence, Butler and Westmoreland counties.

The NWS says freezing rain is expected. Total ice accumulations will range from 1/10 of an inch to 2/10 of an inch.

Impacts may be felt on roads, especially bridges and overpasses, which could become slick and hazardous, the NWS says. Slippery road conditions should be expected and may impact post-holiday travel.

Initial coverage:

It’s dry for now, but with increasing clouds throughout the evening.

Rain showers will develop late overnight; patchy fog is possible in spots into Christmas morning.

Christmas Day will be mostly cloudy and turn mild; highs will reach the mid to upper 40s. A few showers are possible in eastern Westmoreland and Fayette counties in the late morning hours.

The next system arrives Friday, bringing steadier rain and the potential for freezing rain in areas north and east of Pittsburgh, where temperatures will struggle to get out of the low 30s. Significant accumulations of ice are possible as you get into northeastern Armstrong and Indiana counties, especially in the higher elevations of Westmoreland and Fayette counties. Travel will be treacherous for those traveling east into the central part of the state.

Warmer temperatures are expected this weekend, with some quiet weather for travel Saturday and for the first half of Sunday. Rain will likely return later Sunday evening, with colder air arriving Monday that could change rain to snow showers by the start of next week. This looks to be the start of a colder pattern that will stick around to close out 2025.

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