We will have quiet weather in place through Saturday with a mix of sun and clouds and slightly warmer morning lows then the last few weeks. As we head into Sunday and early next week a very cold arctic airmass is going to settle over the Pacific Northwest which is going to not only bring drastically colder temperatures but also much lower snow levels. While the timing and amount of snowfall is uncertain at this time, the potential for Cascade pass travel impacts through the day on Monday are likely.
Rain will arrive Sunday, mainly in the evening as weather models are now holding off on dropping this system south; though if you are traveling south from Washington or Northern Oregon you will see the impacts earlier on Sunday and should be prepared for winter driving conditions. Snow levels Sunday will remain high around 6,000 feet so only expecting travel problems around Crater Lake for southern Oregon. Snow levels plummet to 2,000 feet Monday morning and will impact the high Cascade Passes (Diamond Lake and Lake of the Woods) with snow covered and slick roads. Through the day Monday snow levels will continue to drop to the valley floor by Tuesday.
While the heaviest precipitation looks to fall during the day Monday, we could see our first snow showers of the season for the valley locations on Tuesday. And for those traveling home Monday over Siskiyou and Sexton Summits, you may run into snow and ice at times and should be prepared. Check road conditions before heading out next week and be prepared for winter driving conditions. All areas, especially the east side, should also be ready for brutally cold temperatures next week with highs dipping to the 20s on the east side and 30s for west side valleys.
I hope you all have a very Happy Thanksgiving and I am so thankful for all of our loyal viewers. Have a great evening and drive safe for Black Friday and next week!
Meteorologist Megan Parry