Beachgoers across Los Angeles County should brace for hazardous surf, strong rip currents and possible coastal flooding this Labor Day weekend as swells from a tropical system move through the region, forecasters said Thursday.
The National Weather Service has issued a High Surf Advisory and a Coastal Flood Advisory for the coast, both in effect from 6 a.m. Saturday to 11 p.m. Tuesday. A Beach Hazards Statement is also in effect from Saturday morning through Tuesday evening, and a Wind Advisory is in effect from 6 p.m. Thursday to 6 a.m. Friday for gusty Sundowner winds in southwestern Santa Barbara County.
South to southeast swells from Hurricane Marie are expected to bring larger surf and strong rip currents to the area, particularly for south-facing beaches, throughout the holiday weekend. Forecasters said guidance has increasingly aligned on Marie tracking northwest, well away from the Southern California coast, which has largely ruled out the potential for major impacts such as significant wind or widespread flooding. Still, a large southerly swell is expected to reach much of Southern California from Friday through Tuesday, with the peak timing still somewhat uncertain but Sunday through Monday appearing to be the window of highest swell. The Central Coast is expected to see some elevated surf and rip currents as well, though not to the degree forecast for areas farther south.
Evening high tides of about 7 feet are expected during portions of the event, raising the risk of moderate coastal flooding in low-lying areas and significant beach erosion, according to the weather service. Coastal flood advisories could be issued, with the highest probability in Los Angeles and Ventura counties. Areas considered most susceptible to the combined effects of elevated surf and high tides include Avalon, the Alamitos Peninsula in Long Beach, Malibu and Point Mugu.
The weather service is urging anyone visiting a beach this weekend to go where lifeguards are on duty, stay back from the water's edge, never turn their back to the ocean, stay off rocks and jetties, and always swim near a lifeguard.
Water quality is also a concern at some local beaches. Los Angeles County health officials are advising the public to avoid swimming, surfing and playing in the ocean within 100 yards of the Santa Monica Pier because of bacteria levels exceeding state health standards. Similar warnings are in effect at several other county beaches, including parts of Redondo Beach, Malibu's Paradise Cove and Dan Blocker County Beach, and Cabrillo Beach in San Pedro. A warning previously in place at Mother's Beach in Marina del Rey has been lifted after recent samples showed the water meets state standards. Updated beach conditions are available around the clock on the county's beach hotline, 1-800-525-5662.
Ahead of the surf and rain, the region will see a quiet pattern through Friday, with below-normal temperatures, patchy marine layer clouds and breezy onshore winds continuing each afternoon and evening. Temperatures and humidity are expected to increase heading into the weekend, with a small chance of showers by Saturday night. There is a moderate to high chance of widespread rain, focused mainly south of Point Conception, beginning Sunday and continuing into Tuesday, along with a 5% to 10% chance of thunderstorms Sunday. Forecasters cautioned that periods of rain, combined with the surf and tides, could dampen outdoor holiday plans across the region.
The wet and stormy pattern arrives as Los Angeles County officials separately outlined preparations this week for the coming El Niño winter, which could bring heavier rain and a higher risk of flooding, landslides and debris flows countywide, including in burn-scar areas. County crews are inspecting and maintaining dams, debris basins, channels, storm drains and pump stations, and preparing evacuation and shelter resources, including for people experiencing homelessness and older adults. Residents can sign up for emergency alerts at alert.lacounty.gov, and county officials recommend residents learn their flood and mudflow risk, prepare an evacuation plan and keep at least 10 days of supplies on hand. Supervisor Horvath is scheduled to host a virtual town hall on El Niño preparations Sept. 28 at 6 p.m.
With crowds expected at the beach, Pier, Downtown, parks and neighborhoods throughout the holiday weekend, the Santa Monica Police Department is asking residents and visitors to make safety part of their plans. The department outlined several reminders:
- Plan for a safe ride. If celebrations include alcohol, designate a sober driver, use public transportation, or arrange a rideshare or taxi.
- Slow down, stay alert and share the road, given the expected increase in vehicle, bicycle and pedestrian traffic.
- Secure vehicles by locking doors, closing windows and keeping valuables, bags and electronics out of sight.
- Keep personal belongings close and stay aware of surroundings in busy public areas.
- Follow beach and Pier safety rules, including posted signs, restricted areas and instructions from public safety personnel.
- Report suspicious or concerning activity.
SMPD said officers will be visible throughout Santa Monica over the holiday weekend to provide a public safety presence, assist with traffic control and help ensure residents and visitors can enjoy the holiday safely.
For emergencies or crimes in progress, call 911. For non-emergency police assistance, call 310-458-8491.