What is it about mid-December weather? The latest atmospheric river has brought warm, heavy rain, resulting in widespread major flooding and landslides.

In the Cascades, snow levels will drop and fluctuate across the week. The colder air will allow for accumulating snowfall at pass levels and significant snowfall accumulation at higher elevations. Some forecasts show 2 to 4+ feet of snowfall coming to the Oregon and Washington Cascades, with the heaviest snowfall taking aim at northern Washington.