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NewsKTLA 5 — CaliforniaOctober 25, 2026Los Angeles County

Newport Beach officials issue coastal flooding warnings as exceptionally high tides threaten Southern California

Photo: KTLA 5 — California

Southern California officials are warning residents of heightened coastal flooding risks due to exceptionally high tides expected to reach up to 9 feet above normal. Cities are expanding flood protection efforts by building sand berms, placing sandbags, and deploying sand replenishment trucks while the National Weather Service issues coastal flood advisories and warnings across multiple counties.

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Why It Matters

Waterfront and low-lying residents face potential property inundation and infrastructure disruption, while Metrolink has suspended passenger service between Laguna Niguel/Mission Viejo and Oceanside starting Monday.

Key Facts

  • A tide gauge near Balboa Island recorded a high tide of 7.6 feet on Saturday, which was nearly 2 feet higher than predicted.
  • City leaders warn that water levels could rise up to 9 feet above normal.
  • The National Weather Service issued a coastal flood advisory for Los Angeles, Ventura, Santa Barbara, and San Luis Obispo counties from 5 a.m. Sunday, Oct. 24 to 1 p.m. Thursday, Oct. 29.
  • A coastal flood warning has been issued for Orange and San Diego counties.
  • Newport Beach has expanded coastal protection efforts, utilizing trucks for sand replenishment, reinforcing sand berms, placing sandbags near seawalls, and preparing pumps and tide-control infrastructure.
  • Metrolink suspended service between the Laguna Niguel/Mission Viejo and Oceanside stations beginning Monday.
  • Recent flooding on the Balboa Peninsula, linked to a Pacific storm, inundated streets and prompted emergency response efforts.
  • Long Beach homes were damaged, with cracked and crumbling structures and a shredded boardwalk from high surf.
  • City leaders cited concerns about the upcoming El Niño season increasing the likelihood of coastal storm activity and elevated surf.

Who's Mentioned

locationLaguna Niguel/Mission Viejo“Station endpoint for Metrolink service suspension”OrganizationMetrolink“Suspended service between Laguna Niguel/Mission Viejo and Oceanside stations”OrganizationNewport Beach“City officials warning residents about coastal flooding”locationSanta Barbara“County covered by the coastal flood advisory”locationOceanside“Station endpoint for Metrolink service suspension”OrganizationNational Weather Service“Issued a coastal flood advisory for multiple counties”locationOrange“County subject to a coastal flood warning”PersonLauren Kleiman“Mayor who posted a social media update urging residents to stay aware”locationBalboa Island“Location near a tide gauge that recorded a high tide of 7.6 feet”locationSan Diego“County subject to a coastal flood warning”locationLos Angeles“County covered by the coastal flood advisory”locationVentura“County covered by the coastal flood advisory”locationLong Beach“Coast hit hard with homes cracked and crumbling and boardwalk shredded”locationSan Luis Obispo“County covered by the coastal flood advisory”