El Niño-Driven Kelvin Wave Raises Sea Levels Along U.S. West Coast
A large underwater Kelvin wave, driven by El Niño, recently raised sea levels along the West Coast of the United States, and scientists expect more such events to occur.
Sioux Falls, SD, October 19, 2026 —
A large underwater Kelvin wave driven by El Niño recently raised sea levels along the West Coast of the United States, according to the available description of the event. Scientists expect more such events to occur.
The information provided does not specify when the wave affected the coast, how much sea levels rose, or which locations experienced the change. It also does not identify the scientists or research organization behind the expectation of additional events, or explain how that expectation was reached.
The description characterizes the wave as large and links it to El Niño, but gives no measurements or further details about the relationship between the two. It does not report whether the rise was observed across the entire West Coast or only in particular areas, nor does it describe any effects on communities, infrastructure or coastal conditions.
More such events are expected, but no timeframe, projected frequency or estimate of their potential size is provided. The information also does not indicate whether the expected events would occur under specific conditions or whether they would produce sea-level changes comparable to the recent one.
As a result, the reported development is limited to three points: an underwater Kelvin wave occurred recently, it was driven by El Niño, and it raised sea levels along the U.S. West Coast. The available details do not establish the scale or duration of the rise, or provide a basis for assessing its local consequences. Further particulars about the observations and the scientists’ expectations were not provided.
Story summarized from the original created by Ava Berger on www.npr.org, see more information here.
Media gallery
