From the National Weather Service:
An approaching winter-like storm will bring moderate rain to the Valley, heavy snow for the mountains, and high winds. Valley thunderstorms are possible Friday and Saturday afternoon.
Slick roads late in the week will bring longer commute times
Mountain travel delays and chain controls expected
Damaging winds will bring travel difficulties, downed trees, and power outages
Timing and Strength
Precipitation will begin Thursday; Heaviest precipitation will occur Friday into Friday night. Precipitation continues into Saturday.
Moderate rain and heavy snow expected; travel impacts likely.
Snow levels initially around 6000 feet before dropping to between 2500 and 3000 feet by Sunday.
Strong southerly winds likely Thursday night through Saturday, strongest late Thursday night into Friday.
Valley thunderstorms possible Friday and Saturday afternoon.