After surf pummeled the coast earlier this week, the National Weather Service is again issuing a high surf advisory through Sunday. 

Beginning at 10 a.m. Thursday and ending at 4 p.m. Sunday, the greater Bay Area coast could see large breaking waves between 20 and 30 feet, the weather service said Wednesday. 

Swimming and surfing conditions will be considered dangerous and localized beach erosion is expected. 

High surf is expected in Monterey, Santa Cruz and San Francisco counties, as well as on the Peninsula. The North Bay should also expect high surf as well as rain. 

Dangerous high surf conditions are expected along the greater Bay Area coast from Dec. 26 through Dec.

In these conditions, waves can seem to come out of nowhere and sweep across the beach, pulling people into the ocean from rocks, jetties and beaches, NWS said. 

As always, never turn your back on the ocean and keep people and pets away from dangerous conditions. 

Katy St. Clair got her start in journalism by working in the classifieds department at the East Bay Express during the height of alt weeklies, then sweet talked her way into becoming staff writer, submissions editor, and music editor. She has been a columnist in the East Bay Express, SF Weekly, and the San Francisco Examiner. Starting in 2015, she begrudgingly scaled the inverted pyramid at dailies such as the Vallejo Times-Herald, The Vacaville Reporter, and the Daily Republic. She has her own independent news site and blog that covers the delightfully dysfunctional town of Vallejo, California, where she also collaborates with the investigative team at Open Vallejo. A passionate advocate for people with developmental disabilities, she serves on both the Board of the Arc of Solano and the Arc of California. She lives in Vallejo.