Coastal Flood Watch

* WHAT...For the High Surf Advisory, large breaking waves of 7 to 11 ft with dangerous rip currents. These waves are expected to significantly increase Friday into the weekend. For the Coastal Flood Watch, significant coastal flooding possible.

* WHERE...San Luis Obispo County Beaches and Santa Barbara County Central Coast Beaches.

* WHEN...For the High Surf Advisory, until noon PST Monday. For the Coastal Flood Watch, from late Friday night through Saturday afternoon.

* IMPACTS...There is a moderate risk for damaging flooding of sea water over some vulnerable low-lying coastal areas, especially around the morning high tide, including over beaches, roads, and structures. Significant beach erosion is likely. 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...A significant westerly swell is expected this weekend with impacts likely peaking Saturday. Significant beach erosion and WARNING-level surf is likely. Posing most risk to west-northwest facing shores. Widespread flooding at Oceano Dunes State Park is likely. Coastal hazards are likely to continue well into next week.