Active Weather Alerts
Dense Fog Advisory
Issued: 10:43 AM Dec. 15, 2025 – National Weather Service
...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM PST THIS MORNING... * WHAT...Dense fog will reduce visibility to 1/4 NM or less. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge and San Francisco Bay South of the Bay Bridge. * WHEN...Until 11 AM PST this morning. * IMPACTS...Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. &&
Dense Fog Advisory
Issued: 9:51 AM Dec. 15, 2025 – National Weather Service
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM PST THIS MORNING... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...The Santa Clara Valley, North Bay Interior Valleys, and East Bay Interior Valleys. * WHEN...Until 11 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. If commuting, allow extra drive time to reach your destination safely. &&
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