An upper-level trough and associated cold front will approach the region today from the Northwest. Pressure gradients will tighten across the Inland Northwest late this morning and will result in increasing southwest winds throughout the day. Sustained wind speeds by lunch could be approaching 15-20 mph across portions of the Columbia Basin, West Plains and Waterville Plateau. Gusts of 25-35 mph will accompany the winds. Under mostly cloudy skies today, Northcentral Washington weather will be breezy and cooler with afternoon high temperatures in the mid to upper 50’s. This weather system will also produce fairly large amounts of snow in the Cascades. Stevens Pass could receive snow amounts of 8-12″ and winter weather advisories have been issued to address this along the Cascade crest.
As the storm system exits on Thursday, our skies will be mostly sunny but the windy conditions will persist with speeds of 10-20 mph tomorrow and afternoon highs much cooler, down into the lower to mid-50’s.
One weather system will be on its way out and another deep trough of low pressure will be approaching from the northwest on Friday. Much of the day Friday will be sunny with afternoon highs in the upper 50’s. The trough will then swing through the region Friday night bringing the Wenatchee Valley and Columbia Basin a 40% chance of rain.
On Saturday, expect partly cloudy skies, winds will again be breezy with unseasonably cool afternoon highs into the lower 50’s.
By Sunday, another ridge of high pressure will begin to nose into the region which will lead to a dry, warming trend through the end of next week.
Sunday Monday and Tuesday will be sunny and warmer with highs Sunday in the upper 50’s, lower to mid-60’s on Monday and into the upper 60’s to near 70 degrees on Tuesday.