...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM PDT SATURDAY...

* WHAT...Visibility one quarter mile or less in dense fog.

* WHERE...San Francisco, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast.

* WHEN...Until 10 AM PDT Saturday.

* IMPACTS...Hazardous driving conditions due to low visibility.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.