A Winter Weather Advisory is in effect for the Central and South Cascades until Thursday morning.
Areas above 2,000 feet could pick up anywhere from 4-7 inches of new snow through Thursday. Anyone traveling through the mountains should prepare for hazardous travel conditions and slick roads.
Temperatures will drop into the low to mid-20s along the passes Wednesday night, and into the mid-30s around Puget Sound.
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Thursday will be cloudy but mostly dry around Puget Sound before another weak system moves through Western Washington Friday. It will be cold enough for a wintry mix of snow and rain at 500 feet Friday morning, but there shouldn't be much accumulation.
Snow levels will quickly rise to about 2,000 feet by Friday afternoon with on and off rain, especially after the lunch hour.