The National Weather Service issued high surf advisories Thursday morning for Northern California, with 20-to-30-foot waves expected through Sunday.

Persistent high surf and flooding threats along California's coast have residents on high alert a day after a major storm was blamed for one man's death and the partial collapse of a pier.

Persistent high surf and flooding threats along California’s coast have residents on high alert a day after a major storm was blamed for one man’s death and the partial collapse of a pier, which propelled three people into the Pacific Ocean.