Weather 8-17-20

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As a dome of high pressure continues to build over the Western U.S., the hot and dry weather will continue in Northcentral Washington. The ridge of high pressure responsible for the heat is anchored over the Nevada/Utah border with its axis over north Idaho into Western Montana for today. The current heat warnings and advisories will continue over much of Northcentral Washington until 8:00 p.m. Tuesday. The hot and dry weather conditions will elevate fire concerns for portions of Central Washington as well with a Red Flag Warning for areas around Omak, Wenatchee, Waterville Plateau and the Columbia Basin through tomorrow with low relative humidity’s, temperatures well above normal and windy at times.

For Northcentral Washington today, Sunny skies, with a light and variable south breeze, afternoon high temperatures today between 100-105 degrees. Record high for Wenatchee today is 104 degrees.

On Tuesday, the upper ridge axis shifts into Western Montana, and should bring a few degrees of cooling across the Inland Northwest with daytime highs between 97-102 degrees.

For Wednesday, the combination of an upper level ridge centered over Montana and a Gulf of Alaska low pressure system slowly drifting eastward brings the Pacific Northwest into a west-southwesterly weather flow. Temperatures trend cooler than the beginning of the week, but will still remain above normal with highs generally in the lower to mid-90’s.

A few degrees cooler on Thursday too as a weak cold front moves through with mostly sunny skies and afternoon high temperatures in the lower 90’s. This general weather pattern also supports periodic gusty winds for the Cascades gaps in the afternoon and evening hours.

Friday, Saturday and Sunday weather looks nice with mostly sunny to sunny skies each day afternoon high temperatures will generally be in the lower 90’s with overnight low temperatures in the mid to upper 60’s.