Seattle, WA — Drivers across parts of Western Washington are facing patchy fog and reduced visibility early this morning, especially from the South Sound through the Chehalis Valley, according to the National Weather Service in Seattle.
Traffic cameras from Auburn, Chehalis, I-5 near the Mellen Overpass, and SR-18 at C Street show thick pockets of low-lying fog drifting across major routes. Motorists traveling on I-5, SR-18, and surrounding highways may experience sudden drops in visibility, with some stretches seeing headlights barely cutting through the haze.
The NWS is urging drivers to use low-beam headlights, slow down, and maintain extra following distance between vehicles. Fog can cause quick changes in visibility, and higher speeds increase the risk of sudden slowdowns and collisions.
While this is not an official advisory, these fog patches are significant enough to impact travel through mid-morning. Conditions are most problematic in valleys and low-lying areas where cool overnight air helped moisture condense into dense fog.
As the morning progresses, visibility should gradually improve as temperatures rise. However, drivers heading out early or traveling long distances—especially through the Chehalis Valley, South Sound communities, and the Auburn–Kent corridor—should plan for extra travel time.
No major weather hazards are expected later in the day, but more morning fog is possible again overnight into Sunday as calm winds and moisture linger across the region.
The National Weather Service credits the Washington State Department of Transportation (WSDOT) traffic cameras for providing the real-time visuals that highlight this morning’s low-visibility conditions.
Motorists are reminded to stay alert, avoid using high beams in fog, and allow for safe braking distances on slick or damp roadways.
