Coastal Flood Warning Issued for Humboldt Coast as High Tides Peak

Northern Humboldt County is under a coastal flood warning Thursday morning as high tides and large surf combine to push seawater into low-lying coastal areas.

The warning, issued by the National Weather Service office in Eureka, is in effect from 7 a.m. to 11 a.m. for the Northern Humboldt Coast. Forecasters say high astronomical tides could lead to up to one foot of saltwater inundation above ground level around Humboldt Bay shorelines and tidal waterways.

Tide levels between 9.3 and 9.6 feet MLLW are expected at the North Spit gauge, increasing the risk of flooding. The NWS warns that several coastal roads may close, with impacts likely in areas such as King Salmon and the Arcata bottoms. Low-lying properties, roads, and some critical infrastructure could be inundated, and shoreline erosion is expected.

A coastal flood warning means flooding is occurring or imminent. Residents are urged to remain alert for rising water and take action to protect life and property. The NWS advises avoiding flooded roadways, never driving through standing water, and seeking higher ground if flooding develops.

Officials stress that even shallow, moving water can be dangerous, and conditions can change quickly during peak tides.