Update: Dense fog advisory previously issued will expire at 10 a.m.

The advisory was issued for Eastern Columbia River Gorge of Oregon.

"The threat has ended," states the National Weather Service.

Fog safety: Tips from the weather service for safe travels

When a dense fog advisory is issued for your area, it means that widespread dense fog has developed and visibility can plummet to a quarter-mile or less. These conditions pose challenges for travel, so exercise extra caution on the road or consider postponing your trip if possible.

If driving through fog becomes inevitable, remember these safety guidelines:

Moderate your speed:

Slow down and allocate extra travel time to reach your destination safely.

Visibility matters:

Ensure your vehicle is visible to others by using low-beam headlights, which automatically activate your taillights. Utilize fog