High surf warning in San Francisco through Sunday morning

The National Weather Service has issued a High Surf Warning for San Francisco, Southern Monterey Bay, and the Big Sur Coast starting 6 PM Friday until 4 AM Sunday, according to the NWS San Francisco office.

The warning includes dangerously large breaking waves ranging from 25 to 35 feet, with occasional sets reaching 40 to 50 feet at favored breakpoints. These waves can cause significant beach erosion and flooding of low-lying infrastructure.

In addition to the high surf, a Coastal Flood Advisory is in effect with up to 1.5 feet of inundation possible in low-lying areas near shorelines and tidal waterways. This flooding may lead to isolated road closures and restrict escape routes from beaches and coastal areas.

The NWS advises caution due to the increased risk of sneaker waves and strong rip currents with breaking waves of 15 to 20 feet expected through Friday afternoon. People are urged to avoid swimming or entering the water as large waves can overpower swimmers and sweep across shorelines, jetties, and rocks, increasing the risk of injury or drowning.