One product issued by NWS for: Fairfax CA
Dense Fog Advisory
URGENT - WEATHER MESSAGE National Weather Service San Francisco CA 1252 AM PST Fri Jan 16 2026 CAZ506-161700- /O.CON.KMTR.FG.Y.0001.000000T0000Z-260116T1700Z/ North Bay Interior Valleys- 1252 AM PST Fri Jan 16 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...North Bay Interior Valleys. * WHEN...Until 9 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. Patchy dense fog will result in sudden changes in visibility. Visibility at times will fall below one-quarter of a mile. Use your low beam headlights, slow down, and be prepared for periods of hazardous driving conditions. && $$ Flynn