Active Weather Alerts
Dense Fog Advisory
Issued: 10:26 AM Dec. 12, 2025 – National Weather Service
...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Central Willamette Valley, Tualatin Valley, and Portland West Hills and Chehalem Mountain. * WHEN...Until 10 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Fog will be the most prevalent in rural areas and along water bodies. Light winds through the morning may slow fog dissipation. There is a 30% chance that dense fog will remain through the early afternoon - especially within the Eola Hills and the Tualatin Valley. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down and leave plenty of distance ahead of you. Pedestrians and cyclists should wear bright or reflective clothing to increase the chances of being seen by others in poor visibility conditions. &&
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