A weak disturbance will move through tonight and another one tomorrow bringing increased clouds at times across the region and a slight chance for light showers in the Coast Range. Fog will also continue for west side valley locations and the coast, with some areas of the Umpqua, Illinois, and Rogue Valleys only see a break in the fog late in the day before fog returns overnight tomorrow.
The timing of the first arctic front arriving this weekend looks to bring the first round of showers overnight Sunday to the coast spreading inland during the day on Monday. The heaviest precipitation will fall through the day Monday, mainly in the afternoon and evening for inland areas. Snow levels on Sunday will be above pass level, dropping to impact the higher Cascade passes (Diamond Lake, Lake of the Woods) overnight Sunday through the day Monday and the lower passes (Sexton and Siskiyou Summits) by Monday night. Snow levels will drop to the valley floor by Tuesday morning and while light precipitation will fall with this second front, it will bring the first valley snow of the season.
While this event is still several days away and thus timing and snow totals will continue to be tweaked into next week, the Cascade passes could receive 2 to 4 inches of snow by Tuesday, a foot in the Cascades and up to an inch on the valley floor. After the rain and snow end a very cold arctic airmass will settle bringing brutally cold temperatures especially to the mountains and east side. Be sure to protect pipes, pets and livestock as we head into a “taste of Winter” next week.
Stay tuned to Newswatch12 as we approach next week and better nail down timing and snow totals. Thanks for logging on and have a great weekend!
Meteorologist Megan Parry