The National Weather Service has issued a Winter Storm Warning for Washington. It is in effect through late Friday Night and snowfall is expected to taper off midday Saturday. A second wave of snowfall is arriving this morning and could bring the heaviest snowfall of this storm.
10-18โณ of Additional Snowfall Through Tonight In Washington.

Snow levels are expected to hover between 3,000 and 4,000ft, but the heaviest snowfall is forecasted to occur above 4,000ft.
Additional Storm Info:
Washington: 10-18โณ of Additional Snowfall Through Tonight
* Additional snow accumulations of
10 to 18 inches, are expected.
- NOAA Seattle, WA
WA Winter Storm Warning:
URGENT - WINTER WEATHER MESSAGE National Weather Service Seattle WA 644 AM PST Fri Dec 29 2017 Cascades of Whatcom and Skagit Counties- Including Mount Baker Ski Area ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING ABOVE 3000 FEET... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Tree branches could fall as well. Additional snow accumulations of 10 to 18 inches, are expected. * WHERE...Cascade mountains and valleys of Whatcom and Skagit Counties, including Maple Falls and the Mount Baker Ski Area. * WHEN...Until 10 PM PST this evening. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times.