Rain and snow is now moving in from the North this morning — this is the onset of an arctic front that will move through Southern Oregon today. Snow will be ongoing through this evening at Crater Lake and Diamond Lake. With cold air settling in behind this front, dropping snow levels will bring winter like weather to many of the passes by late afternoon.
More widespread activity this morning will become more showery this afternoon and evening. Snow has been falling for the past two to three hours near Crater Lake — by this afternoon, snow levels will be down to roughly 3,000.’ For the Klamath Basin and the higher elevation passes, the rain will transition to snow as this cold air moves in. This will bring light snow showers to the roads through the afternoon. The I-5 passes could likely see light accumulations, between 1″ and 3.”
A winter weather advisory is in place for the Cascades through 1pm this afternoon and a high wind warning for Eastern Klamath County and Lake County through 4pm. Peak winds will be primarily in the morning — wind gusts so far have been in the 20′s and low 30′s. They will gradually diminish through the afternoon.
Post frontal showers will continue through the overnight hours, tapering off Tuesday morning. With snow levels at this point down to the Valley floor, showers will be in the form of snow over the Rogue Valley. In terms of accumulations, little to none is anticipated …grassy surfaces over West Side Valleys show the best chance for accumulation. The foothills may see 1″ before this system is all said and done.
The bitter cold temperatures will follow beginning Tuesday, but more so into Wednesday & Thursday. Morning lows will be in the single digits over the Basin and in the higher elevations. Highs will struggle to warm into the 20′s and 30′s.
Meteorologist Alyssa Caroprese