Looks like the highest elevations could really get slammed with moisture over the next couple days. While the lowlands will probably only pick up an inch through Tuesday, the highest resolution models (NAM 3km and WRF 4/3 km) are predicting upwards of 10-15" of rain in the area near Mount Baker and high terrain of the Olympics. This isn't unheard of, but that 10-15x gradient is definitely stronger than you'd normally see during the year. The summits of the volcanoes could pick up more than 100" of snow in the next few days.