Coastal Flood Advisory

Locations Affected

Manila, CA ∙ Rio Dell, CA ∙ Trinidad Head, CA ∙ Fieldbrook, CA ∙ Humboldt Bay, CA ∙ Rohnerville, CA ∙ Westhaven-Moonstone, CA ∙ Kneeland, CA ∙ Loleta, CA ∙ Eureka, CA

Full Alert Message

Coastal Hazard Message National Weather Service Eureka CA 851 AM PST Wed Dec 31 2025 ...COASTAL FLOOD ADVISORY NOW IN EFFECT UNTIL 10 AM PST THIS MORNING... ...COASTAL FLOOD WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH SATURDAY AFTERNOON... * WHAT...For the Coastal Flood Advisory, High astronomical tides will cause minor flooding in low lying areas around Humboldt Bay. Up to one half foot of saltwater inundation above ground level is possible near shorelines and tidal waterways. Between 8.8 and 9.1 feet MLLW at the North Spit tide gauge is predicted. For the Coastal Flood Watch flooding likely around Humboldt Bay Thursday through Saturday at high tide. 1 to 1.5 feet of saltwater inundation (9.5 to 10 feet MLLW) is possible Friday and Saturday. * WHERE...Northern Humboldt County Coast. * WHEN...For the Coastal Flood Advisory, until 10 AM PST this morning. For the Coastal Flood Watch, from Thursday morning through Saturday afternoon. * IMPACTS...Several coastal roads may be closed. Low lying property and some critical infrastructure will be inundated. Some shoreline erosion may occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Coastal Flood Watch means that flooding is possible but not imminent. Coastal residents in the watch area should begin preparations for rising water and take appropriate action to protect life and property. Feet Above Ground is locally defined as feet above the Highest Astronomical Tide or HAT.

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