Cold air is moving into the region this morning as an arctic air mass drops south into the Pacific Northwest. The strongest winds have been down the Okanogan Valley wind chill values between 5 to 15 below zero and expect these numbers to drop a little further this morning. Regarding the snow potential, there remains some uncertainty how far north the band of snow will make it late this afternoon into tonight as the low approaching Oregon sends increased moisture into Southern Washington.
Weather for Northcentral Washington today calling for cloudy skies, a 30% chance of snow and much colder temperatures with highs this afternoon only in the lower 20’s.
The next weather system drops in from the northwest Friday night into Saturday. The system does stretch as it moves inland, but has more moisture with it giving Northcentral Washington and the Columbia Basin a better potential for snow. For Friday, cloudy skies and a 30% chance of daytime snow going up to a 60% chance Friday night with highs in the lower 20’s. 1-3” of snow accumulation is expected. Even snowier for Saturday with a 70% chance and afternoon high temperatures in the mid 20’s.
Most of the area can expect a short break from precipitation on Sunday with mostly cloudy skies and highs in the mid to upper 20’s. Widespread snow overnight Sunday and on Monday will impact the Monday morning commute. There is a 60% chance of snow Monday morning diminishing in the afternoon with warmer high temperatures into the lower to mid-30’s.
A milder Pacific airmass associated with Monday’s system should allow for some increase in temperatures on Tuesday and Wednesday with partly cloudy to mostly sunny skies each day and warmer with high temperatures in the upper 30’s and lower 40’s.