
California’s record coastal flooding signals a worsening winter ahead
Record-breaking tides and a strengthening El Niño have caused widespread coastal flooding across California, from Marin County to Newport Beach. While current water levels are driven by thermal expansion and Kelvin waves rather than astronomical king tides, experts warn that conditions will worsen significantly during the holiday season. Local governments are struggling with inadequate infrastructure, relying on temporary sandbag barriers and manual valve systems to protect low-lying communities from rising seas.













