LOS ANGELES (AP) 鈥 Powerful surf rolled onto beaches on the West Coast and Hawaii on Thursday as a big swell generated by the stormy Pacific Ocean pushed toward shorelines, causing localized flooding.

Forecasters urged people to stay off rocks and jetties, and to not turn their backs to the ocean because of the danger of 鈥渟neaker waves鈥 鈥 occasional much bigger waves that can run far up the sand and wash someone off a beach.

A high surf warning for parts of Northern California said waves would range from 28 to 33 feet (8.5 to 10 meters) and up to 40 feet (12 meters) at some locations, the 好色tv Weather Service said, adding that there were reports of flooding in low-lying coastal areas.

In Aptos on the north end of Monterey Bay, surf overran the beach and swept into a parking lot, leaving the area strewn with debris. Santa Cruz County issued warnings for people in several coastal areas to be ready to evacuate.

鈥淢other Nature鈥檚 angry,鈥 said Eve Krammer, an Aptos resident for several years. "I mean these waves are gnarly. They鈥檙e huge.鈥

The same area was battered by the ocean last January as the West Coast was slammed by numerous atmospheric rivers.

鈥淚 feel for the people that are down low here,鈥 said Jeff Howard, also an Aptos resident.

While not quite as huge, the waves along Southern California were also described as hazardous, with life-threatening rip currents. Nonetheless, surfers couldn't resist.

Patience was key, according to Alex Buford, 27, who was catching waves just north of Manhattan Beach on the Los Angeles County coast.

鈥淚 was waiting for awhile because the waves were really sick, and they're kinda hard to get into even though I have a really big board,鈥 he said. 鈥淛ust waited for a good one and I got it and it was a long one. Pretty big. It was sick.鈥

In Hawaii, the weather service forecast surf rising to 30 to 40 feet (9 to 12 meters) along north-facing shores and 18 to 22 feet (5.5 to 6.7 meters) along west-facing shores of five islands.

Professional Hawaii surfer Sheldon Paishon was getting ready to surf Thursday morning at Makaha, a world-famous surfing beach on Oahu鈥檚 west side.

Paishon, 30, has been surfing at various spots around Oahu this week, taking advantage of waves during this week鈥檚 high surf warning in effect till Friday morning.

鈥淚t鈥檚 always big waves in the winter time in Hawaii,鈥 he said.

He warned that novice surfers should check with lifeguards before heading into the water and 鈥渕ake sure you got some people around you and stay safe.鈥

Honolulu Ocean Safety lifeguards, posted at beaches across Oahu, rescued 20 people along the island鈥檚 famed North Shore on Wednesday, said spokesperson Shayne Enright. They were also busy with thousands of 鈥減reventative actions,鈥 she said.

鈥淭his time of year produces incredible surf but it can also be very dangerous,鈥 she said.

The dangerous surf could also cause surges that could hit coastal properties and roadways, the weather service warned.

___

Jennifer Sinco Kelleher reported from Honolulu.

The 好色tv Press. All rights reserved.