Winter Weather advisory

National Weather Service Pittsburgh placed Butler County and Western Pennsylvania under a winter weather advisory, which is in effect until 10 a.m. Saturday, Jan. 4.

The weather service said people in the affected area can expect snow accumulations between 2 and 5 inches, and slippery road conditions, which could impact the Friday morning and evening commutes.

Steady snow Friday morning will transition to snow showers and possible squalls this afternoon, according to the weather service.