Seattle, WA – Snow-covered mountain passes and difficult travel conditions are expected to continue through Thursday morning as a Winter Weather Advisory remains in effect for the Washington Cascades.
According to the National Weather Service in Seattle, the advisory is in effect until 10 a.m. PST Thursday for the Cascades of Whatcom, Skagit, Snohomish, King, Pierce, and Lewis counties. Snow accumulations of 5 to 10 inches are expected in higher elevations, including Stevens Pass, Snoqualmie Pass, White Pass, and areas near Mount Baker and Mount Rainier.
Forecasters say winds may gust up to 35 miles per hour, which could lead to blowing snow and reduced visibility along mountain highways. Travel could be very difficult at times, especially overnight into the Thursday morning commute for those crossing the Cascades.
The Winter Weather Advisory follows a Blizzard Warning that is set to expire at noon Wednesday, with conditions improving slightly but remaining hazardous through early Thursday. Snowfall rates are expected to decrease gradually overnight, though slick roads and poor visibility may persist.
Meteorologists also note a low-confidence chance of brief freezing rain Thursday morning as snow levels rise to around 6,000 feet. While significant ice accumulation is not expected, even light icing could further complicate travel on mountain passes and untreated roads.
Strong winds may bring down tree branches and could cause isolated power outages in exposed areas. Drivers are urged to slow down, carry chains where required, and allow extra travel time. Outdoor recreation plans in the mountains should be postponed until conditions improve.
Conditions are expected to gradually improve later Thursday morning as snow tapers off, though lingering impacts may continue in higher elevations into the afternoon.
Travelers are encouraged to check the latest road conditions and pass reports through the Washington State Department of Transportation before heading out.
