Coastal Flood Advisory

Locations Affected

Santa Rosa, CA ∙ Napa, CA ∙ Petaluma, CA ∙ San Rafael, CA ∙ Novato, CA ∙ Fairfax, CA ∙ Sonoma, CA ∙ Guerneville, CA ∙ Kenwood, CA ∙ Silverado Resort, CA

Full Alert Message

Coastal Hazard Message National Weather Service San Francisco CA 1215 PM PDT Sat May 16 2026 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 3 AM PDT TUESDAY... * WHAT...Up to 1.0 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...Bayshore locations along the San Pablo Bay. * WHEN...From 10 PM this evening to 3 AM PDT Tuesday. * 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: 0.9 ft above normal (6.76 ft MLLW) at 11:31 PM Saturday 5/16 1.0 ft above normal (6.80 ft MLLW) at 12:17 AM Monday 5/18 0.8 ft above normal (6.66 ft MLLW) at 1:07 AM Tuesday 5/19 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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