A coastal flood advisory covers Los Angeles County beaches from 5 a.m. Sunday, Oct. 25, until 1 p.m. Thursday, Oct. 29, 2026. The National Weather Service says very high tides could bring minor to moderate flooding in low-lying coastal spots.
The advisory also covers coastal areas of Ventura, Santa Barbara and San Luis Obispo counties. NWS Los Angeles/Oxnard issued it early on Oct. 24.
What the coastal flood advisory means
High tides should reach 7.5 to 8.0 feet each late morning, according to the National Weather Service alert. That is 1.0 to 1.5 feet above the astronomical projections. Tide tables rely on the pull of the moon and sun, so the extra height comes from other conditions on top of that pull. The forecast calls the highest tides Monday through Wednesday.
The forecasters expect seawater to spill over vulnerable low areas, especially near high tide. That includes beach parking lots, bike paths and harbor walkways. They also expect moderate to significant beach erosion, and they say isolated damage to the most exposed structures is possible.
Who is affected
Beachgoers and people on coastal paths feel this first. A beach lot may fill with water around the late morning peak even on a sunny day. So walkers, cyclists and drivers who use coastal paths and lots may need a different route for a few hours.
Harbor areas can also see water on walkways. Anyone parking near the shore during the peak should check where the water line sits before leaving a car.
What could change
The service notes a small chance of isolated coastal flood warnings on Wednesday and Thursday. That would happen only if larger surf develops. A warning is a step above an advisory, so conditions would be worse than currently forecast.
The advice from the weather service is short. Listen to local officials, and do not drive around barricades or through water of unknown depth. Saltwater can also damage a car’s brakes and wiring, so a flooded street is not worth a shortcut.
For background on the El Niño winter and how burned hillsides raise local flood risk, read our report on burn scar flooding and the El Niño winter. For more local news, visit our Los Angeles and California guide.
This article is general information and covers conditions as of Oct. 25, 2026. For current alerts, check the NWS Los Angeles/Oxnard office.