The National Weather Service issued an updated winter weather advisory at 8:28 p.m. on Wednesday valid from Thursday 4 a.m. until Friday 4 a.m. for Higher Elevations of Indiana as well as Mercer, Venango,

The artic air sticks around as the snow moves in with the coldest days in Western Pennsylvania on the way next week.

On Wednesday at 1:18 p.m. a winter weather advisory was issued by the National Weather Service valid from Thursday 7 a.m. until Friday 7 a.m. for Elk, Clearfield and Cambria counties.

A prolonged light snow event in Western PA is expected Thursday, with some of the snow making it east over the mountains. Temperatures well below freezing along with a very low sun angle this time of year will mean that any snow that falls will stick to all untreated surfaces.

More snow is expected to come through the Pittsburgh area on Thursday. And, while only and inch or two is forecast, the timing could make things dangerous on the roads.

KDKA-TV's Ricky Sayer is on Route 22 in Delmont taking a look at the road conditions in the Mobile Weather Lab.