California rushes to prepare for massive ‘Kelvin’ wave and predicted sea level rise

Key Points:

• A massive underwater Kelvin wave, driven by a brewing "super" El Niño, is approaching California's coast and expected to raise sea levels by up to a foot, potentially doubling the existing 8-12 inch rise from climate change.
• The Kelvin wave swells tides from beneath the surface rather than crashing like typical waves, and when combined with high tides and storms, it could cause severe coastal flooding, erosion, and damage to homes and infrastructure.
• Scientists warn that the upcoming winter, especially January to March, poses heightened risks as the Kelvin wave coincides with the peak storm season and highest tides in November and December, increasing the likelihood of devastating flooding similar to the 1997-1998 El Niño winter.
• Emergency preparations are underway across California, particularly in vulnerable areas like the San Francisco Bay Area, where local governments are distributing sandbags, clearing drains, and enhancing communication to mitigate flooding impacts.
• The situation remains uncertain, but experts emphasize the need for heightened awareness and readiness as this El Niño event could be one of the most severe on record, exacerbating coastal and inland flooding risks.