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NOAA's National Weather Service
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WARNINGS - WATCHES - ADVISORIES - STATEMENTS
Updates every 15 Minutes
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 DENSE FOG ADVISORY |
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| Los Angeles County | ||
| Effective: Wed, 9/17 3:39am | Severity: Moderate | |
| Updated: September 17, 2025 5:00 am | Urgency: Expected | |
| Expires: Wed, 9/17 10:00am | Certainty: Likely | |
| Areas Affected: San Francisco - Coastal North Bay Including Point Reyes National Seashore - San Francisco Peninsula Coast - Northern Monterey Bay - Southern Monterey Bay and Big Sur Coast | ||
Alert
Details:
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Monterey Bay and the Big Sur Coast, San Francisco, Coastal North Bay Including Point Reyes National Seashore, and San Francisco Peninsula Coast. * WHEN...Until 10 AM PDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. Information: If driving, slow down, use your headlights, and leave plenty of distance ahead of you. |
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| DENSE FOG ADVISORY |
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| Marin County | ||
| Effective: Wed, 9/17 3:39am | Severity: Moderate | |
| Updated: September 17, 2025 5:00 am | Urgency: Expected | |
| Expires: Wed, 9/17 10:00am | Certainty: Likely | |
| Areas Affected: San Francisco - Coastal North Bay Including Point Reyes National Seashore - San Francisco Peninsula Coast - Northern Monterey Bay - Southern Monterey Bay and Big Sur Coast | ||
Alert
Details:
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Monterey Bay and the Big Sur Coast, San Francisco, Coastal North Bay Including Point Reyes National Seashore, and San Francisco Peninsula Coast. * WHEN...Until 10 AM PDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. Information: If driving, slow down, use your headlights, and leave plenty of distance ahead of you. |
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