A high surf advisory in L.A. County that went into effect at 4 a.m. will last through 8 p.m. Thursday. The advisory for Orange County will last from 10 a.m. Wednesday through 10 p.m. Thursday.
Powerful winds from several northern Pacific storms drove the high surf, National Weather Service meteorologist Curt Kaplan said. Waves of 6 to 12 feet are expected along the Southern California coast, while 17- to 22-foot surf may break north of Point Conception, he said.
Officials from the weather service warned surfers and swimmers to stay near lifeguards — and if caught in a rip current, swim parallel to the shore until they are able to break free.
Starting Wednesday night, a storm is expected to move no farther south than Ventura County, where it will fade away without affecting L.A. County, Kaplan said.
A separate storm is expected to produce rainfall over L.A. County on Friday evening into Saturday, according to Kaplan, and again on Sunday through Tuesday.