Dense fog advisory for Oregon until Friday morning – visibility as low as 1/4 mile

On Friday at 2:26 a.m. a dense fog advisory was released by the National Weather Service in effect until 10 a.m. for Tualatin Valley, West Hills and Chehalem Mountains, West Central Willamette Valley and East Central Willamette Valley.

"Visibility one quarter mile or less in dense fog," can be expected according to the weather service. "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."

"Low visibility could make driving conditions hazardous," states the weather service. "If driving, slow down and leave plenty of distance ahead of you. Pedestrians and cyclists should wear brig