Arctic Air Planning One Last Attack on NW?

Not likely, its pretty much April but it wouldn't be rare. We've seen snow in Western Oregon as late as April 13th, and according to the Canadian Model, a buildup of cold arctic air to the north seems to clutter up right at the washington/canada boarder at the end of the run. You can see a cold front from the north develope in this picture:

Another Canadian snapshot shows it as well: The 12z GFS shows the lowest 850mb Temps as -6. Now this time of the year, thats not really that cold. In January all's we need is -7 to see snow to the Valley. But since it's just about April, we would need a -12 or colder to see that type of weather. Typically we'll most likely see cold showers, highs in the low 50's upper 40's at most..mountain snow of course.