Dense Morning Fog Flows Over Bay Area Hills

The National Weather Service forecast patchy dense fog for parts of Northern California overnight and into the morning of Thursday, August 18.

This timelapse video showing fog moving was released by the National Weather Service Bay Area, who said it was filmed from Mount Tamalpais in Marin County.

The weather service warned motorists to drive with caution due to poor visibility. Credit: National Weather Service Bay Area via Storyful

Video Transcript

[NO AUDIO]