Concern mounts over slow-moving 'kelvin wave' heading toward California

Scientists are raising concern about a slow-moving, planetary-scale ocean phenomenon known as a kelvin wave that could raise sea levels along the California coastline by up to a foot, according to the Guardian.

The report says the phenomenon is linked to a strong El Niño that is continuing to develop in the Pacific Ocean. Kelvin waves of this kind form when trade winds that typically blow from South America toward Asia weaken or reverse during El Niño years, triggering a massive, slow-moving shift of water across the ocean.

According to the Guardian, scientists say El Niño is intensifying the threat of storm surges and flooding along the California coast in the coming months, as the kelvin wave keeps warm water trapped near the shoreline.

The report does not specify an exact timeline for when the kelvin wave is expected to reach the California coast or which specific communities are considered most at risk. It also does not name the particular scientists or research institutions cited in connection with the warning.

El Niño is a recurring climate pattern associated with the warming of surface waters in the central and eastern tropical Pacific Ocean, and is known to influence weather patterns, storm activity, and coastal sea levels across the Pacific basin. Further details on mitigation measures being considered by California authorities were not included in the available report.