High surf warning in effect for San Francisco coast through Sunday morning

The National Weather Service has issued a High Surf Warning for San Francisco and nearby coastal areas including Southern Monterey Bay and Big Sur Coast. The warning is in effect from 6 PM Friday until 4 AM Sunday, according to the NWS San Francisco office.

Dangerously large breaking waves of 25 to 30 feet are expected during this period. The NWS also highlighted a Coastal Flood Advisory in effect until 4 PM Friday, with up to 1.5 feet of inundation possible in low-lying areas near shorelines and tidal waterways.

Additionally, a Beach Hazards Statement is active from 9 PM Wednesday through 6 PM Friday, warning of an increased risk of sneaker waves and strong rip currents with waves ranging from 15 to 20 feet.

The NWS advises that high tides will cause flooding of low-lying infrastructure, isolated road closures, and coastal erosion. Rising tides will push water and waves farther up the beach than normal, restricting escape routes from beaches and coastal areas.

The warning emphasizes the danger of large waves overpowering swimmers and pulling people into the sea from beaches, jetties, and rocks, which can lead to significant injuries or drowning. Waves can sweep across shorelines without warning, so caution is urged.

Residents and visitors are advised to stay away from the shoreline and avoid entering the water during this period to ensure safety.

The San Francisco tide gauge is expected to record high tides about 1.3 to 1.4 feet above normal on Wednesday and Thursday, contributing to the flooding risk.