Today will be the last quiet and spring-like day for quite some time. Rain, snow and wind are all on the way as the Pacific Northwest transition back to a very active weather pattern. Temperatures will start off cool Monday morning, but afternoon highs will warm up nicely for the afternoon. High temperatures will run 3-5 degrees warmer than Sunday with plenty of sunshine across all areas.
The first round of rain will move into the Coast around midnight, traveling inland around the morning commute. This will lead to widespread rain into Tuesday afternoon for much of the region. Snow levels will start off above 5,000′ on Tuesday and drop to near 4,000′ Tuesday night. This will allow for snow to fall along the Cascade passes. Highway 140 and Highway 66 are areas we’ll have to watch for snow into Wednesday. The widespread rain/snow on Tuesday will wind down some Tuesday night before picking back up again into Wednesday.
Also, Siskiyou Summit could potentially have accumulating snow Tuesday night and Wednesday morning. During times of heavier precipitation, snow levels could drop to 3,500.’ Increasing winds Monday night will lead to breezy conditions Tuesday in those areas that typically deal with stronger winds as well.
The wave on Wednesday will help to raise snow levels some but precipitation will continue falling throughout much of the day. Several more storms are expected follow for the end of the week and the weekend. The timing of these storms is likely to change from one computer run to the next so updates will come from day to day.
Meteorologist Alyssa Caroprese