The Pittsburgh region will in the coming days feel its coldest air in almost two decades, according to a National Weather Service wind-chill advisory released this morning.
A cold front hitting Western Pennsylvania on Sunday night will bring with it wind chills of between minus-25 and minus-40 degrees by Monday night, according to the weather service.
The wind-chill watch expires Wednesday and covers Allegheny, Armstrong, Beaver, Butler, Fayette, Indiana, Lawrence, and Westmoreland counties.
The weather services forecast winds from the west of 10 to 20 miles per hour with gusts of up to 30 miles per hour.
Expected temperatures are between minus-10 and minus-15 degrees Monday night, between 2 and minus-5 degrees Tuesday and between zero and minus-10 degrees Tuesday night.