| U.S. Alerts |
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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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| Los Angeles County | ||
| Effective: Mon, 12/1 6:47pm | Severity: Minor | |
| Updated: December 1, 2025 8:31 pm | Urgency: Expected | |
| Expires: Tue, 12/2 9:30am | Certainty: Likely | |
| Areas Affected: North Bay Interior Valleys - San Francisco Bay Shoreline | ||
Alert
Details:
* WHAT...Up to 1.4 ft of inundation above ground level is possible in low lying areas near shorelines and tidal waterways. * WHERE...Bayshore locations along the San Francisco Bay and San Pablo Bay. * WHEN...From 6 AM Tuesday to 3 PM PST Sunday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...At the San Francisco tidal gauge high tide is expected to be 0.8 ft above normal (6.66 ft MLLW) at 8:24 AM Tuesday, 1.2 ft above normal (7.00 ft MLLW) at 9:04 AM Wednesday, 1.4 ft above normal (7.20 ft MLLW) at 9:48 AM Thursday, 1.4 ft above normal (7.23 ft MLLW) at 10:35 AM Friday, 1.2 ft above normal (7.08 ft MLLW) at 11:25 AM Saturday, and 0.9 ft above normal (6.75 ft MLLW) at 12:17 PM Sunday. High tide timing varies up to 90 minutes earlier or later along the Pacific Coast and throughout the San Francisco Bay respectively. Information: If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. |
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| Marin County | ||
| Effective: Mon, 12/1 6:47pm | Severity: Minor | |
| Updated: December 1, 2025 8:31 pm | Urgency: Expected | |
| Expires: Tue, 12/2 9:30am | Certainty: Likely | |
| Areas Affected: North Bay Interior Valleys - San Francisco Bay Shoreline | ||
Alert
Details:
* WHAT...Up to 1.4 ft of inundation above ground level is possible in low lying areas near shorelines and tidal waterways. * WHERE...Bayshore locations along the San Francisco Bay and San Pablo Bay. * WHEN...From 6 AM Tuesday to 3 PM PST Sunday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...At the San Francisco tidal gauge high tide is expected to be 0.8 ft above normal (6.66 ft MLLW) at 8:24 AM Tuesday, 1.2 ft above normal (7.00 ft MLLW) at 9:04 AM Wednesday, 1.4 ft above normal (7.20 ft MLLW) at 9:48 AM Thursday, 1.4 ft above normal (7.23 ft MLLW) at 10:35 AM Friday, 1.2 ft above normal (7.08 ft MLLW) at 11:25 AM Saturday, and 0.9 ft above normal (6.75 ft MLLW) at 12:17 PM Sunday. High tide timing varies up to 90 minutes earlier or later along the Pacific Coast and throughout the San Francisco Bay respectively. Information: If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. |
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| Los Angeles County | ||
| Effective: Mon, 12/1 6:47pm | Severity: Moderate | |
| Updated: December 1, 2025 8:31 pm | Urgency: Expected | |
| Expires: Tue, 12/2 9:30am | Certainty: Likely | |
| Areas Affected: Coastal North Bay Including Point Reyes National Seashore - San Francisco Peninsula Coast | ||
Alert
Details:
* WHAT...Long period westerly swell will result in an increased risk for sneaker waves and strong rip currents. Breaking waves 10 to 14 feet, with long lulls of 10 to 20 minutes or more between largest sets. * WHERE...Pacific Coast beaches. * WHEN...Through Wednesday evening. * IMPACTS...Sneaker waves can unexpectedly run significantly farther up the beach than normal, including over rocks and jetties. Rip currents are typically more frequent and stronger in the vicinity of jetties, inlets, and piers. Information: Dangerous conditions are forecast along the shoreline. Hazards include sneaker waves, strong rip currents, and large breaking waves. Stay off the rocks and NEVER turn your back on the ocean! |
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| Marin County | ||
| Effective: Mon, 12/1 6:47pm | Severity: Moderate | |
| Updated: December 1, 2025 8:31 pm | Urgency: Expected | |
| Expires: Tue, 12/2 9:30am | Certainty: Likely | |
| Areas Affected: Coastal North Bay Including Point Reyes National Seashore - San Francisco Peninsula Coast | ||
Alert
Details:
* WHAT...Long period westerly swell will result in an increased risk for sneaker waves and strong rip currents. Breaking waves 10 to 14 feet, with long lulls of 10 to 20 minutes or more between largest sets. * WHERE...Pacific Coast beaches. * WHEN...Through Wednesday evening. * IMPACTS...Sneaker waves can unexpectedly run significantly farther up the beach than normal, including over rocks and jetties. Rip currents are typically more frequent and stronger in the vicinity of jetties, inlets, and piers. Information: Dangerous conditions are forecast along the shoreline. Hazards include sneaker waves, strong rip currents, and large breaking waves. Stay off the rocks and NEVER turn your back on the ocean! |
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