Coastal communities across California began bracing Monday for several days of flooding tied to what forecasters are calling potentially "record-breaking tides," with water levels already rising along stretches of the coast as a seasonal king tide arrives.
The National Weather Service said significant coastal flooding is expected in San Diego and Orange counties through Thursday that could close roads and inundate homes, businesses and critical infrastructure. A wider swath of coastline from San Luis Obispo County down through Los Angeles County could see "minor to moderate" flooding, with tides reaching as high as 8 feet. Farther north in the Bay Area, officials are warning of as much as 2.1 feet of inundation, concentrated in low-lying coastal areas.
Stay off the beach at high tide
Local officials have told residents in affected towns to avoid beaches during peak high-tide windows and to keep further back from the water than they normally would. King tides — the especially high tides that occur a few times a year when the sun, moon and Earth align most closely — are a predictable seasonal event, but this round is forecast to run unusually high, raising the risk of overtopping in spots that don't typically flood.
Emergency planners in several coastal counties have been pre-positioning barriers and pumps ahead of the peak tide windows later this week, a now-familiar seasonal drill that has taken on added urgency as rising sea levels push baseline water levels higher year over year, making routine king tides more disruptive than they once were.
A seasonal warning with a bigger backdrop
California's coastal flood risk has drawn increasing scrutiny from state climate officials in recent years, with king tide events increasingly used as a preview of what permanent sea-level rise could mean for vulnerable stretches of Highway 1, low-lying harbor towns and beachfront property. For now, the immediate concern is simpler: getting through the next several days without flooded intersections or swamped parking lots turning into real property damage. The Weather Service's advisories remain in effect through Thursday, after which tide heights are expected to recede toward more typical seasonal levels.
