Overview
- National Weather Service offices issued coastal flood advisories and a Beach Hazards Statement this weekend that remain in effect through at least Tuesday–Wednesday for Bay Area and Pacific Coast beaches.
- Forecasts raised expected high‑water levels at the San Francisco tide gauge to about 1.9–2.0 feet above normal, which would exceed the prior summer record and produce up to two feet of inundation in some low‑lying shoreline areas.
- City crews in Newport Beach and other coastal towns have installed gap boards, deployed pumps and provided sandbags while advising residents in identified neighborhoods to install seawall plugs and protect property.
- Dangerous marine conditions are expected to persist: long‑period southern‑hemisphere waves and strong tides are producing elevated surf, 6–8 foot breaking waves in parts of Southern California, and high sneaker‑wave and rip‑current risk that already contributed to a drowning in Laguna Beach.
- King tides occur when moon and sun align but the current event is worsened by higher baseline sea levels from human‑caused sea‑level rise and early El Niño warming, a combination that pushes water farther inland and increases erosion and infrastructure damage.