Could be nasty for PDX. With a well placed high, the cold air drainage through gorge can be as stubborn as the CAD regions of NE. Pretty common for the them to stay below freezing for 6-12+ hours longer than even the high res models.
Also, this has been the winter of yore so far for Vancouver. Multiple 10cm+ events, and they just grabbed 30cm yesterday. Another 10-20cm on the way too. Huge events for them.