On Wednesday at 10:15 p.m. a dense fog advisory was released by the National Weather Service in effect until Thursday at 10 a.m. for John Day Basin, Foothills of the Northern Blue Mountains of Oregon, Foothills of the Southern Blue Mountains of Oregon, North Central Oregon and Central Oregon.

The weather service states to expect, "Visibility one quarter mile or less in dense fog."

"Low visibility could make driving conditions hazardous," says the weather service. "If driving, slow down, use your headlights, and leave plenty of distance ahead of you."

Navigating fog: Safety tips by the weather service

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 f

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