Dense fog rolled in over Anchorage on Friday, prompting a warning about low visibility from the National Weather Service.
Areas of dense fog will remain in the Anchorage bowl through Saturday morning, the National Weather Service said in a winter weather advisory.
Visibility will drop to a quarter mile, or less, the agency said, which can cause "very difficult driving conditions."
"Slow down, use your headlights, and leave plenty of distance ahead of you," the warning said.
The advisory comes after rain, freezing rain and black ice contributed to dangerous road and sidewalk conditions earlier Friday.
On Friday evening, difficult driving conditions were noted for many major roads in Anchorage and Eagle River, including the Glenn Highway up to Eklutna, and the Seward Highway to roughly Mile 105, according to the state's 511 website.
The fog is expected to lift by Saturday afternoon. Starting Sunday, a chance of snow is in the forecast through Thursday next week, according to the National Weather Service.