Seattle, Washington – Heavy snow and gusty winds could make travel difficult across the Washington Cascades through Tuesday morning.
According to the National Weather Service in Seattle, a Winter Weather Advisory remains in effect until 1 p.m. Sunday, followed by a Winter Storm Warning from 5 p.m. Sunday through 5 a.m. Tuesday for the Cascades of Whatcom, Skagit, Snohomish, and northern King counties.
Forecasters say additional snowfall of up to 3 inches is expected during the advisory period Sunday morning and early afternoon. Winds may gust as high as 35 mph, which could reduce visibility at times.
Conditions are expected to worsen later Sunday as the Winter Storm Warning begins. The National Weather Service says total snow accumulations between 12 and 18 inches are possible across the mountain zones during the storm period.
The warning area includes key mountain travel corridors such as Mount Baker and Stevens Pass, where accumulating snow and blowing wind may create hazardous driving conditions.
Snow-covered roads could lead to temporary closures, travel delays, and limited visibility, particularly during heavier snowfall periods and overnight hours. Gusty winds may also down tree branches and contribute to scattered power outages in higher elevations.
Officials advise travelers to prepare for winter conditions if crossing the Cascades. The National Weather Service recommends carrying extra food, water, and a flashlight in vehicles in case drivers become stranded.
Drivers are urged to slow down and use caution on mountain roads, especially during periods of heavier snowfall.
The storm could affect students, workers, and weekend travelers returning across mountain passes, where rapidly changing conditions are common during winter systems.
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