Weather to Expect:

Numerous showers and a risk of thunderstorms in western Washington tonight as a trough of low pressure moves through.
Showers will continue overnight into Saturday morning, temperatures will be chilly in the morning in the low to mid 30s. The showers will be locally heavy within a convergence zone which poses the risk of wet snow mixing with rain within the zone. The snow level is near 1,500 feet so that it would not be difficult for a heavy shower to bring wet snow as low as 1,000 feet. That would bring the potential to locations like Cougar mountain, Issaquah Alps and Tiger mountain through early Saturday morning. Accumulation is not expected but it would make for slippery roads in the higher elevations.
A new frontal system, storm #5, will bring increasing rain and breezy winds Saturday afternoon and evening. The storm will not be as powerful as the last 4 but will make itself known with more rain on top of already saturated soils. Highs will be cool in the 40s.
Sunday will begin with scattered showers which will decrease through the afternoon. More sunbreaks are expected and highs will be in the mid 40s.

Be prepared for winter driving in the passes. A Winter Weather Advisory is in effect for the Cascades through 6am as snow showers will bring an additional 6-10" of snow overnight....especially in the convergence zone between Stevens and Snoqualmie Pass. ~Rebecca