Record El Niño: California Faces Floods, Waves

California is preparing for a historically intense Super El Niño, with experts predicting record high tide levels and extensive coastal flooding. This phenomenon is expected to increase coastal water levels due to warmer ocean temperatures expanding seawater and Kelvin waves, which are large, slow-moving ocean waves. These effects, combined with an 18-year astronomical high-tide cycle, are set to heighten coastal hazards.

While precipitation patterns are less predictable, strong El Niños generally correlate with wetter conditions across California. Scientists emphasize the certainty of coastal impacts, including erosion and flooding, which could affect thousands of people and billions in property. The influence of ongoing global warming may further exacerbate these El Niño-related hazards, making this event a unique challenge.

The current Super El Niño is intensifying, with vast amounts of heat beneath the tropical Pacific's surface contributing to its power. This event is occurring at a peak high-tide cycle, amplifying its potential effects. The last significant Super El Niño in 1997-1998 caused severe damage, and current projections suggest this year's event could be even more impactful.