Update: Dense fog advisory affecting Foothills of the Northern Blue Mountains of Oregon Wednesday morning

Update: Dense Fog Advisory for Northern Blue Mountains Foothills, Oregon

The National Weather Service has issued an updated dense fog advisory effective until 10 a.m. for the foothills of the Northern Blue Mountains in Oregon.

Expect visibility as low as 1/4 mile due to dense fog, which can significantly impact driving conditions.

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

What a Dense Fog Advisory Means

This advisory indicates widespread dense fog with visibility reduced to a quarter-mile or less, creating difficult and potentially dangerous travel conditions.

Recommended Safety Tips for Driving in Dense Fog

Slow your speed and allow extra travel time to ensure safety.
Use low-beam headlights to increase your vehicle's visibility and activate your taillights.
If your vehicle is equipped, use fog lights for better illumination.
Avoid using high-beam headlights because they can cause glare and reduce your ability to see ahead.
Maintain a safe distance from the vehicle in front to handle sudden stops or changes in traffic.
Follow lane markings closely to stay in the correct lane.

"If driving through fog becomes inevitable, remember these safety guidelines," the advisory advises.

When possible, consider delaying your trip until fog conditions improve to avoid hazardous situations.

Author's summary: Dense fog in Oregon’s Northern Blue Mountains reduces visibility to 1/4 mile or less, requiring drivers to use low beams, slow down, and keep safe distances to navigate hazards safely.

OregonLive.com — 2025-11-05

Update: Dense Fog Advisory for Northern Blue Mountains Foothills, Oregon

What a Dense Fog Advisory Means

Recommended Safety Tips for Driving in Dense Fog

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