Windchill advisories have been issued for the region and an arctic blast of cold and wind is expected to push into the area this evening.
The National Weather Service, Spokane, issued a wind chill advisory for the North Idaho panhandle and the Okanogan valley through 11 a.m. Thursday, though dangerously cold wind chills are expected to persist into Friday morning.
Winds are expected to pick up tonight as arctic air moves in to the region. North to northeast winds of 15 to 25 miles per hour will drop wind chill values in the impacted area from five to 15 below zero.
The Missoula NWS issued an advisory in effect from 10 p.m. today through noon Thursday, calling for wind chill values to 25-below in Troy and Libby and as cold as minus 40 in the Yaak and Eureka.