High Surf Warning Issued for California's Central Coast With Waves to 25 Feet; Advisories Across Southern California Through Nov. 17
The National Weather Service office in Los Angeles/Oxnard issued a High Surf Warning on November 12 for the Central Coast beaches of Santa Barbara County and the beaches of San Luis Obispo County, California: from 9 p.m. Friday, November 13, to 3 a.m. Sunday, November 15, breaking waves of 18 to 25 feet are expected, along with dangerous rip currents. High Surf Advisories are in effect at the same time for the coasts of Ventura, Los Angeles, Orange and San Diego counties, and a series of long-period west-northwest swells will keep large surf along the Southern California coast through at least Tuesday, November 17.
Before the warning takes effect, the Central Coast beaches are under a High Surf Advisory with breaking waves of 10 to 15 feet through 9 p.m. Friday. The Weather Service has also issued a Coastal Flood Warning for the same stretch of coast: from 3 a.m. to 6 p.m. Saturday, November 14, seawater may flood low-lying coastal areas around high tide, inundating beaches, walkways and roads and potentially damaging some structures. Widespread flooding is likely at Oceano Dunes, and breaking waves may impact the Cayucos and Pismo Beach piers as well as the Morro Bay Harbor entrance. The agency says powerful waves and strong rip currents pose an exceptional risk of ocean drowning; large waves can wash people off beaches and rocks and capsize small boats near shore. Everyone should remain out of the water and stay off beaches, jetties and piers, and drivers should not go through water of unknown depth.
In Ventura County, a High Surf Advisory took effect Thursday afternoon and runs through 3 p.m. Tuesday: breaking waves of 4 to 7 feet at first, increasing to 8 to 14 feet Friday through Tuesday, peaking Saturday and possibly again Monday. There is a low chance of warning-level surf on Saturday, and breaking waves are possible at the Ventura Harbor entrance. For the Malibu Coast and Los Angeles County Beaches, a High Surf Advisory runs from 2 p.m. Friday through 3 p.m. Tuesday, with surf of 4 to 7 feet Friday, 7 to 12 feet Saturday, and 6 to 9 feet Sunday through Tuesday; moderate coastal flooding and beach erosion are possible on Saturday.
The Weather Service office in San Diego has a High Surf Advisory in effect for the Orange County coast and the San Diego County coast from 4 p.m. Friday to 10 a.m. Sunday: breaking waves of 5 to 7 feet with sets to 8 to 9 feet at northwest-facing beaches, and a high rip current risk. Adjusted high tides near 7 feet could combine with the surf to push water into parking lots and boardwalks and cause localized beach erosion. The surf wanes Sunday afternoon but may remain elevated for west-facing beaches into Monday morning. Inexperienced swimmers should stay out of the water.
The Weather Service says the episode is driven by a series of west-northwesterly swells generated by storms over the Pacific Ocean, producing an extended period of large surf into next week; warning-level surf is possible again on the Central Coast late Sunday night through Monday. Impacts will be greatest on west-northwest-facing beaches and minor for south-facing shores, and morning high tides are when the coastal flooding risk is highest.
(Source: National Weather Service)
Source: National Weather Service
Published by GSM · USA (original Chinese edition)
Photo: 图：国家气象局洛杉矶/Oxnard 办公室 11 月 12 日发布的西南加州海岸风险图，中央海岸周六的影响等级为「高」。 / Image: Coastal hazards risk graphic for Southwest California issued by the National Weather Service Los Angeles/Oxnard office on November 12; impact level for the Central Coast is High on Saturday.
