The threat of coastal flooding this week on the Southern California coast led to a suspension of service for part of Metrolink’s Orange County Line and preparations to protect shorelines residences.
Metrolink suspended Orange County Line service south of the Laguna Niguel/Mission Viejo Station, starting Monday. The temporary service changes will be in effect Monday through Friday, when high tides are expected to pound the coastline in Orange County and other locations.
Temperatures start to drop. Kelley Moody has the forecast for Monday Aug. 10, 2026.
A coastal flood advisory was issued for Orange County beaches from 6 p.m. Monday to 11 p.m. Wednesday.
The high tides were expected to affect low-lying beaches south of Point Conception. Minor coastal flooding is possible starting Monday evening and continuing through Wednesday, when tide heights of up to 7.5 feet are expected between 8 and 10 p.m. each evening.
During that period, Orange County Line trains will operate only between Los Angeles and the Laguna Niguel/Mission Viejo Station. No alternate bus service will be provided.
Metrolink said weekend service is not expected to be affected. Last month, similar high-tide conditions caused delays that extended beyond the affected corridor.
Amtrak Pacific Surfliner and freight rail service are expected to continue operating as long as conditions remain safe, according to Metrolink.
The agency said crews have been reinforcing the rail line in south Orange County this week by adding rock and other protective material to help guard against erosion. Workers also will continue inspecting the coastal tracks during high tides, with equipment and repair materials staged nearby if needed, officials said.
In Long Beach, the city installed a wooden fence on part of the shoreline to protect beach-side homes from high tides. The neighborhood was hit hard by high surf last month.
City New Service contributed to this report.