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Western Washington Forecast

Lowland rain-snow this workweek, with possible light accumulations Tuesday.

PUGET SOUND FORECAST

Monday afternoon dries out before a stronger system arrives Tuesday.

DISCUSSION

Monday: The cool showery air will remain over the state on Monday but showers will decrease with just a few mixed rain and snow showers, drying out by the afternoon. Snow levels may be between 300-600 ft. It will be chilly with highs only in the low 40s.   

The National Weather Service issued a Winter Weather Advisory for Western Whatcom County and Western Skagit County through 10 a.m. Monday morning. NWS said this has been issued not because of high accumulations (it's a rain/snow mix in the early morning hours), but because the worst of the impacts will be during the morning commute.

A Winter Storm Warning has also been issued for the Cascade Mountains above 1,500 feet through 10 a.m. Monday. Another few inches could pile up overnight Sunday.

Tuesday: A stronger system arrives Tuesday, bringing more moisture. Highest chances for low-level snow are Tuesday night into Wednesday, with snow possible at sea level. At this point, if there is any accumulation around Puget Sound, it will be minimal, with only a few inches expected.

By Wednesday afternoon, low-levels transition to rain. At the passes, though another foot of snow is possible in the Tuesday to Wednesday range.

Thursday-Friday: Thursday may start with snow showers but high pressure will build into the state mostly decreasing and ending the snow showers. Skies should clear to mostly sunny by later on Thursday and the sun should continue through Friday, It will be cold with daytime highs in the 30s and lows in the teens and 20s.  

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