Beginning today, Northcentral Washington weather turns more active, with shower chances, breezy to windy conditions and cooling temperatures as a couple of weak systems move through. This morning the first weather front was pushing toward the Cascades and is expected to advance toward Eastern Washington by midday. At the same time, a second system is tracking from the Gulf of Alaska toward the central British Columbia Coast. Today winds are expected to increase behind the front, first near the Cascades and then across rest of the area, especially un-sheltered areas away from the mountain valleys. Speeds of 10-20 mph with gusts to 30 mph will be possible. The strongest of these winds are expected in the lee of the Cascades from the Wenatchee area into the Upper Columbia Basin. This could lead to some patchy blowing dust around the Columbia Basin. Under partly cloudy skies, expect highs today in the upper 60’s.
Then Saturday, winds will be on the increase with speeds of 15-25 mph will be possible around the Cascades into the Columbia Basin, Wenatchee Valley and the Spokane area gusts of 30 to 40 mph will be possible. This is shy of a wind advisory level so it will be monitored should speeds start to look stronger. Additionally there will be a broader threat of blowing dust and potential impacts to visibility, especially across the deeper Columbia Basin. This includes the typically prone I-90 corridor around the Moses Lake area and vicinity. Travel could be impacted. Temperatures will also be much cooler beginning Saturday with afternoon highs only in the upper 50’s.
On Sunday and into Monday, another reinforcing shot of cold air will drop due south out of British Columbia Monday keeping our temperatures cooler than normal only around 60 degrees.
By Tuesday and through the end of the week high pressure will build in bringing sunny weather and warmer temperatures. Afternoon high temperatures at first will be into the mid 60’s warming into the upper 60’s by Wednesday and Thursday.