The Pacific Northwest and Alaska have been unusually warm this year. The Snoqualmie ski area, about 50-60 miles east of Seattle, is almost bare of snow now, three months ahead of schedule.
It’s simple...the western US has been under a dominate ridge for most of the winter whereas the northeast US has been under the influence of a trough. Warmer than normal in the western US and colder than normal in the eastern US. Basic meteorology...