High Surf Advisory

* WHAT...For the High Surf Warning, dangerously large breaking waves of 14 to 18 feet with dangerous rip currents. For the High Surf Advisory, large breaking waves of 12 to 17 feet with local sets to 20 feet and dangerous rip currents.

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

* WHEN...For the High Surf Warning, until 4 PM PST this afternoon. For the High Surf Advisory, from 4 PM this afternoon to 3 PM PST Tuesday.

* IMPACTS...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. Minor tidal overflow during morning high tides.

* ADDITIONAL DETAILS...A series of west-northwesterly swells will create an extended period of large surf this week, with the potential for WARNING level surf Wednesday and Thursday. Areas that may see most significant impacts will be west- northwest facing beaches, with widespread flooding likely at low lying areas such as at Oceano Dunes. Breaking waves may impact the Cayucos and Pismo Beach piers as well as the Morro Bay Harbor entrance.