Coastal Flood Advisory

Locations Affected

Dillon Beach, CA ∙ Muir Woods National Monument, CA ∙ Half Moon Bay Airport, CA ∙ Salmon Creek, CA ∙ Inverness, CA ∙ Marin City, CA ∙ Timber Cove, CA ∙ Half Moon Bay, CA ∙ Bodega, CA ∙ Muir Beach, CA

Full Alert Message

Coastal Hazard Message National Weather Service San Francisco CA 445 AM PDT Sat Oct 31 2026 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 6 PM PDT THIS EVENING... * WHAT...Up to 1.5 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...Pacific Coast. * WHEN...Until 6 PM PDT Saturday. * IMPACTS...High tides will result in flooding of low-lying infrastructure, isolated road closures, and coastal erosion. Rising tides will bring water and waves farther up the beach than normal, restricting escape from beaches and coastal areas. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.5 feet above normal (7.3 ft MLLW) at 03:44 PM on Saturday 10/31. These predictions include up to 1.5 ft of surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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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