A tightly wound weather system responsible for the bands of moderate to heavy snow last night over the Spokane and Coeur D Alene Areas is beginning to drift to the south into the Palouse and lower Idaho Panhandle this morning. Colder air bleeding into the region from the north quickly wrapped into this low pressure system which led to convective bands of precipitation which started as rain but rapidly transitioned to snow. The storm will continue to rapidly weaken and drift south during the day today but north to northeast winds drawn into the departing low will create brisk wind chills and intrusion of colder and drier Canadian air. Most locations west and north of the low pressure system including the Wenatchee Valley, Okanogan Valley and Western Columbia are already experiencing northerly winds with speeds of 10-20 mph. These winds will decrease slowly throughout the afternoon and under sunny skies expect afternoon high temperatures today in the lower 50’s.
The cooler and drier air moving in from the north will knock down our temperatures close or below freezing tonight with overnight lows in the Wenatchee valley overnight only in the mid to upper 20’s. This could lead to some re-freezing of moisture on roads, especially on bridges and over passes.
The dry and cool northerly flow will give way to a strengthening upper-level ridge of high pressure Thursday which will start off quite chilly with a hard freeze likely for most communities. Those still nursing a garden should be prepared for a hard freeze. But, under sunny skies, temperatures Thursday afternoon will rebound back into the mid-50’s which is still 10 to 15 degrees from where we should be this second week of October.
For Friday and into the upcoming weekend, high pressure will build into Northcentral Washington with warm and dry weather. Temperatures will increase to the upper 50’s Saturday and around 60 degrees expected on Sunday.
Our weather forecast looks nice for both Monday and Tuesday as well with partly cloudy skies and afternoon high temperatures around 60 degrees.