Tropical Storm Marie is driving dangerous surf and coastal flooding risk into Carlsbad on Labor Day, with advisories in effect through Wednesday night.

The National Weather Service issued a Coastal Flood Advisory and a High Surf Advisory for San Diego County coastal areas through 11 p.m. Wednesday, Sept. 9. High astronomical tides of 6.2 to 6.8 feet combined with the storm's swell are forecast to cause tidal overflow and coastal flooding during evening high tides, according to Times of San Diego.

South and southwest-facing beaches and low-lying areas face the greatest risk. The NWS warned that waves could occasionally run much farther up the beach than expected, especially during increasing and high tides.

Some south-facing beaches have already seen surf up to 10 feet. Conditions remain dangerous.

"We're getting reports from lifeguards that the surf conditions are very dangerous, specifically the rip currents," NWS meteorologist Rose Schoenfeld said Sunday, Sept. 6, in comments reported by the Associated Press. Schoenfeld called the conditions "life-threatening."

Marie became a hurricane Thursday, Sept. 3, before weakening. By Sunday night, the National Hurricane Center placed the storm's top winds at 70 mph, with its center about 695 miles southwest of San Diego. Forecasters expect the system to lose its tropical structure late Tuesday or early Wednesday, according to Latin Times.

Despite weakening, a large swell from the system is keeping the advisories in place, NBC 7 San Diego reported. Dangerous swimming and surfing conditions, including rip currents, are expected. The NWS urged the public to be extra careful in and near the ocean given the large Labor Day crowds.

The storm's effects compound existing problems along Carlsbad's coast. Sections of Carlsbad State Beach have already washed away, including the area in front of the Tamarack parking lot, forcing a partial closure, the Los Angeles Times reported. The San Diego Union-Tribune reported that the biggest surf from Marie was expected to hit from Oceanside northward, with Tamarack State Beach likely to take additional impact after a series of large summer swells had already caused significant erosion.

Carlsbad City Manager Geoff Patnoe noted in a Thursday, Sept. 3, update that Tamarack Beach and its adjacent parking lot belong to the State of California, meaning the city does not have authority to lead repairs there. The city said it is monitoring conditions and staying in contact with State Parks, according to the city's website.

The city has also been preparing for potential El Niño conditions by readying swift water rescue and Urban Search & Rescue teams, coordinating sandbag distribution and clearing storm drains.

The advisories are set to expire at 11 p.m. Wednesday, Sept. 9. Marie is forecast to track northwest over the next several days while remaining well off the California coast.