Advertencias, San Francisco

High Surf Advisory issued December 26 at 5:34AM PST until December 29 at 4:00PM PST by NWS San Francisco CA * WHAT...Large breaking waves of 20 to 30 feet. * WHERE...Pacific Coast. * WHEN...From 10 AM Thursday to 4 PM PST Sunday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion can be expected. Large waves can sweep across the beach without warning, pulling people into the sea from rocks, jetties and beaches. Sudden immersion in cold water can result in cold water shock even for the most experienced swimmers. Cold water shock can result in dramatic changes in breathing, heart rate and blood pressure, greatly increasing the risk of drowning in rough open waters. Inexperienced swimmers should remain out of the water due to dangerous surf conditions.