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NOAA's National Weather Service
Each location shows all alerts on one page
WARNINGS - WATCHES - ADVISORIES - STATEMENTS
Updates every 15 Minutes
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 DENSE FOG ADVISORY |
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| Los Angeles County | ||
| Effective: Thu, 1/15 10:19pm | Severity: Moderate | |
| Updated: January 15, 2026 11:00 pm | Urgency: Expected | |
| Expires: Fri, 1/16 8:00am | Certainty: Likely | |
| Areas Affected: North Bay Interior Valleys | ||
Alert
Details:
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...North Bay Interior Valleys. * WHEN...Until 9 AM PST Friday. * IMPACTS...Low visibility could make driving conditions hazardous. Information: If driving, slow down, use your low beam 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. |
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| DENSE FOG ADVISORY |
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| Marin County | ||
| Effective: Thu, 1/15 10:19pm | Severity: Moderate | |
| Updated: January 15, 2026 11:00 pm | Urgency: Expected | |
| Expires: Fri, 1/16 8:00am | Certainty: Likely | |
| Areas Affected: North Bay Interior Valleys | ||
Alert
Details:
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...North Bay Interior Valleys. * WHEN...Until 9 AM PST Friday. * IMPACTS...Low visibility could make driving conditions hazardous. Information: If driving, slow down, use your low beam 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. |
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