Coastal Flood Warning

* WHAT...For the High Surf Advisory, large breaking waves of 10 to 15 feet with dangerous rip currents. For the High Surf Warning, dangerously large breaking waves of 18 to 25 feet with dangerous rip currents. For the Coastal Flood Warning, significant coastal flooding expected.

* WHERE...San Luis Obispo County Beaches and Santa Barbara County Central Coast Beaches. Surf will we highest for west- northwest facing beaches.

* WHEN...For the High Surf Advisory, until 9 PM PST Friday. For the High Surf Warning, from 9 PM Friday to 3 AM PST Sunday. For the Coastal Flood Warning, from 3 AM to 6 PM PST Saturday.

* IMPACTS...There is a high risk for flooding of sea water over vulnerable low-lying coastal areas, especially around the time of high tide. This includes significant flooding of coastal beaches, walkways and roads, and potentially damaging some structures. Significant beach erosion is expected. Powerful waves and strong rip currents will pose an exceptional risk of ocean drowning and damage to coastal structures like piers and jetties. Large breaking waves can cause injury, wash people off beaches and rocks, and capsize small boats near shore. Remain far away from the water's edge.

* ADDITIONAL DETAILS...A series of west-northwesterly swells will create an extended period of large surf into next week, with the potential for WARNING level surf again late Sunday night through Monday. Areas that may see most significant impacts will be west-northwest facing beaches, with widespread flooding likely at Oceano Dunes. Breaking waves may impact the Cayucos and Pismo Beach piers as well as the Morro Bay Harbor entrance.