...Cold and breezy weather coming to southwest Washington and northwest Oregon this week...
...Accumulating snow in the southwest Washington and northwest Oregon Cascade foothills and Coast Range late tonight and Monday morning...
1 to 3 inches of snow between 1000 and 2500 ft is possible late tonight and Monday morning in the South Washington and north and central Oregon Cascade foothills and Oregon Coast Range. Snow may mix with rain below 1000 ft Monday morning in the Willamette Valley...but little...if any...snow accumulation is expected.
The coldest weather of the winter season so far will impact southwest Washington and northwest Oregon late Monday through Wednesday. Cold east winds will begin to develop across the area Monday afternoon...and increase in earnest over the area Monday night.
East winds will likely gust to 60 to 70 mph in the windiest areas of the Columbia River gorge by Tuesday. Brisk 15 to 25 mph east and northeast winds will also affect the entire region Monday night and Tuesday. The winds could be locally strong enough to produce isolated damage and power outages again around the Portland Metro.
Highs on Tuesday and Wednesday may struggle to reach 32 degrees fahrenheit in the Willamette Valley. Coastal locations will likely only top out in the 30s as well. Low temperatures will likely be coldest either Tuesday or Wednesday night when winds begin to relax. Expect low temperatures in the low 20s across the Portland Metro...but temperatures will likely dip into the teens across the rest of the Willamette Valley.
The strong east to northeast winds in combination with cold temperatures will produce very cold wind chills Monday night and Tuesday. The coldest wind chills will likely be in the Cascades and in the Columbia Gorge...but the remainder of southwest Washington and northwest Oregon will feel the effects as well. A wind chill watch is in effect for the north Oregon and South Washington Cascades where wind chill values of minus 15 to minus 25 fahrenheit appear possible late Monday night into Tuesday morning...mainly above 3000 to 4000 ft.
Be sure to have winter supplies on hand and be prepared for the cold weather and brisk east winds this week.