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SUNSET BEACH, CALIF. USA -- Sea water rises in to an alley near Pacific Coast Highway in Sunset Beach, Calif., during high tide on January 10, 2013. Photo by Jeff Gritchen / Los Angeles Newspaper Group

LOS ANGELES - Amid a cold front sweeping the Southland, high surf will pound the coast today, Friday and Saturday, and some flooding is possible, National Weather Service forecasters said.

"Minor coastal flooding is expected mainly in the vicinity of low-lying beaches and beach parking lots beginning Thursday morning and continuing each morning through Saturday morning," according to an NWS advisory.

A flood advisory will be in effect from 5 a.m. today through 11 a.m. Saturday along the coast from San Luis Obispo to Los Angeles, including around santa Catalina Island, with high surf and astronomical high tides expected to cause any flooding that occurs.

Alamitos Bay in Long Beach "may have some tidal overflow into local streets," said an NWS advisory. "Alamitos Bay has a history of experiencing minor tidal overflows with king tides around seven feet or higher."

According to the U.S. Environmental Protection Agency, a king tide is the highest predicted high tide of the year at a coastal location. It is a normal occurrence once or twice a year.

A Long Beach lifeguard said personnel will monitor potential problem areas and "take appropriate action" if there is flooding.

"This is standard operating procedure," the lifeguard said. "We do this anytime there is a potential for flooding."

According to the NWS, approximate times for the high tides are 7:20 a.m. Thursday, 8:10 a.m. Friday, and 9 a.m. Saturday.


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A Coastal Flood Advisory indicates that winds and tides will combine to generate flooding along the coastline.

A high surf advisory, indicating an expectation of dangerous rip currents and some beach erosion, will be in effect from noon today until 2 p.m. Saturday.

The advisories were issued in conjunction with a NWS statement that "a very cold low-pressure system will enter the area from the the north early Thursday." According to the NWS, the system will trigger some scattered showers, but its bigger impact will be "to usher in much colder air ... as well as gusty northerly winds."

The winds will die down Saturday, but "colder-than-normal temperatures are expected to continue into early next week," according to the weather service.