The worst of the waves would be the 20- to 30-footers along the Northern and Central California coast—Coastal North Bay, San Francisco, Monterey Bay, and Big Sur—lasting until 4 p.m. Sunday, according to the National Weather Service (NWS).
The NWS’s San Francisco office instructed inexperienced swimmers to stay out of the water.
“Large waves can sweep across the beach without warning, pulling people into the sea from rocks, jetties and beaches,” it said in the advisory.
Another advisory issued for San Luis Obispo County beaches and Santa Barbara County beaches warns of 10- to 15-foot waves that lower to 8 to 11 feet Sunday afternoon, continuing into Monday night.
Ventura County beaches are expected to face 6- to 10-foot waves until Sunday night.
Los Angeles County beaches and the Malibu coast have been warned of 5- to 8-foot waves through Monday morning.
Three construction workers on the wharf fell into the ocean. Two were rescued and the other swam to safety.
According to local officials, the wharf and beaches will remain closed indefinitely, as hazardous debris continues to wash ashore.
Also on Dec. 23, a man died after a large wave trapped him under debris on a Santa Cruz County beach, according to the sheriff’s office.
“You are risking your life, and those of the people that would need to try and save you by getting in or too close to the water,” it said.
Those present said the man may have climbed onto the rocks to take a picture.
That morning the NWS Ocean Prediction Center warned about severe winds near the Pacific Northwest.