... A significant snowfall likely next week in southwest Washington and northwest Oregon...
Colder air will filter in over the Pacific northwest Sunday and Monday... setting the stage for the possibility of a winter storm over northwest Oregon and southwest Washington Tuesday night through Wednesday.
- At this time it appears likely that snow will develop over much of northwest Oregon and southwest Washington Tuesday night. As is often the case for winter storms in the region... there is a considerable amount of uncertainty regarding how long the snow will last before potentially changing over to freezing rain and rain.
- The best guess is for precipitation to intensify on Wednesday... but for the rain snow line to lift north to near the Portland Metro area by Wednesday afternoon.
- In The Gorge and Hood River Valley precipitation is likely to remain snow or freezing rain through Wednesday night.