ScienceThe planetary wave headed for California isn’t what you think it is

A strong Kelvin wave is moving from South America toward California, carrying warm water normally trapped in the western Pacific and temporarily raising sea levels along vulnerable coasts. The common phenomenon can worsen storm and flood risks, and its effects may be greater amid an exceptionally strong El Niño.

Kelvin waveEl Niñosea-level riseCalifornia

TThe Verge★★★☆☆2026-10-06 12:00Original