Active Weather Alerts
Dense Fog Advisory
Issued: 4:07 AM Dec. 13, 2025 – National Weather Service
...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM PST SATURDAY... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...East Bay Interior Valleys and North Bay Interior Valleys. * WHEN...Until 11 AM PST Saturday. * IMPACTS...Low visibility could make driving conditions hazardous. Limited visibility will result in hazardous driving conditions. 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. Widespread dense fog will have the potential to reduce visibility to below one-quarter of a mile. Use your low beam headlights, slow down, and be prepared for periods of hazardous driving conditions due to poor visibility. If possible, consider avoiding travel across the region. If you must travel, allow extra drive time to reach your destination safely. &&
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