Forecasters issued a high surf advisory for the western facing beaches along Los Angeles County's coastline, including in Malibu, in advance of a series of strong storms.
The westerly swell will range from six to 12 feet with sets up to 15 feet in some locations, the National Weather Service reported.
"Surf and swell conditions will be hazardous to anyone entering the water from very early Thursday morning through this weekend, with dangerous rip current expected," an NWS advisory said. "Minor beach erosion and localized flooding of low-lying areas may also occur."
The high surf advisory will go into effect at 6 a.m. Thursday through 10 p.m. Saturday, according to forecasters. The highest surf is expected on Friday and into Saturday.
Rain, which arrived Wednesday, will continue well into next week. Up to a 10th to a third of an inch of rain is expected in the Malibu area Wednesday afternoon and evening, forecasters said.
Health officials warn against ocean contact within 72 hours of a significant rain event.
Highs in the 60s are expected through Sunday, with an 80 percent chance of rain on Friday night.
Free sand bags will be available at all Los Angeles Fire Department stations in preparation for the storm.
Empty bags will be available at all stations, and a select number will also have sand on-site to fill up bags.
To properly fill a sand bag, the L.A. County Department of Public Works recommends these steps:
- Fill sandbags half-way. Sand is suggested, however soil can be used.
- For a more durable and reusable bag, mix 10 parts sand with one part cement. The materials can be mixed and placed dry. After all bags are positions, residents should sprinkle them with water.
- Fold bags and stack them with the folded top toward the upstream or uphill direction.
-City News Service and David Carini contributed to this report.