Active AlertsShell Beach, CA

What: Significant and widespread flooding caused by excessive rainfall will be likely, with potential debris flow impacts across recent burn scars.
Where: The following countie
S: Los Angeles. Ventura. Santa Barbara. San Luis Obispo.
When: Through Friday afternoon.
Impacts: Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Mud and debris flows will be possible across foothill and mountain areas, including recent burn scars.
Additional Details: - This prolonged strong Atmospheric River storm system will bring periods of heavy rain through late this week. Potential flooding impacts include the threat of significant and widespread urban roadway flooding, a high risk of major rock and mud slides, and rapid rises in creeks, streams, and rivers which will likely lead to swift water rescues. The recent burn scars will be at risk for debris flows, possibly damaging. These flooding impacts will likely lead to significant travel delays and road closures during this busy holiday travel period. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

At 526 AM PST, Doppler radar was tracking a line of convective showers 10 miles east of Point Piedras Blancas, or 25 miles southeast of Gorda, moving north at 30 mph.
Hazard: Wind gusts of 50 to 55 mph.
Source: Radar indicated.
Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include Hearst Castle.

If outdoors, consider seeking shelter inside a building. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service.

What: Large breaking waves of 10 to 16 feet with dangerous rip currents.
Where: San Luis Obispo County Beaches and Santa Barbara County Central Coast Beaches.
When: Until 11 AM PST Saturday.
Impacts: There is an increased risk for ocean drowning. Rip currents can pull swimmers and surfers out to sea. Large breaking waves can cause injury, wash people off beaches and rocks, and capsize small boats near shore.
Additional Details: Minor to potentially isolated moderate coastal flooding for south-facing beaches especially during high tides. This is expected to occur through Thursday due to strong southerly winds.

Remain out of the water due to dangerous surf conditions, or stay near occupied lifeguard towers. Rock jetties can be deadly in such conditions, stay off the rocks.