A slow-moving Kelvin wave, amplified by a powerful El Niño, could raise California's sea levels by up to a foot, increasing risks of flooding and storm surges.
Scientists warn that a Kelvin wave, a large-scale ocean phenomenon, is moving toward California's coast, potentially raising sea levels by up to a foot. This development is compounded by the ongoing El Niño, which is trapping warm water along the coastline and increasing the risk of storm surges and flooding.
The Kelvin wave forms when trade winds weaken or reverse during El Niño years, causing a slow-moving shift of warm water across the Pacific. This wave, which reached the northern tip of South America in late August, is expected to reach California within days. Sea level rise from the wave, combined with the effects of El Niño, could persist through the winter and into early next year.
Why it matters
Coastal communities may face sudden flooding as warm water accumulates near shorelines.
This section reflects Dumpling editorial interpretation and is provided for context only.
What to watch
Watch whether climate readings continue to exceed historical Kelvin wave temperature thresholds.
This section reflects Dumpling editorial interpretation and is provided for context only.