UPDATE: The NWS issues dense fog advisory until Sunday midday

UPDATE: The NWS Issues Dense Fog Advisory Until Sunday Midday

On Sunday, the National Weather Service (NWS) in Portland, OR issued an updated dense fog advisory effective until 11 a.m. covering the Willapa and Wahkiakum Lowlands and Cowlitz County Lowlands.

Advisory Details

The NWS warns of visibility reduced to one quarter mile or less in areas affected by dense fog.

"Low visibility could make driving conditions hazardous," states the NWS.

The advisory advises drivers to slow down and maintain ample distance ahead. Pedestrians and cyclists are encouraged to wear bright or reflective clothing to improve visibility during foggy conditions.

Safety Recommendations if Driving in Fog

Reduce speed to match visibility conditions.
Keep extra distance between vehicles.
Use low beam headlights only.
Be cautious and attentive to pedestrians and cyclists.

About Dense Fog Advisory

Your local National Weather Service issues a dense fog advisory when widespread dense fog reduces visibility to one-quarter mile or less, significantly complicating travel.

Travelers should take extra precautions or avoid driving if possible during such conditions.

Source and Publication

Source: The National Weather Service

This report was originally published on November 2, 2025, at 7:31 AM.

"The creation of this content included the use of AI based on templates created, reviewed and edited by journalists in the newsroom."

Author's summary: The NWS update advises caution due to dense fog reducing visibility to a quarter mile or less, urging safety measures for all travelers until Sunday at 11 a.m.

The Olympian — 2025-11-03