California
A Kelvin wave is lifting the water on the California coast.
It is not a tsunami. The pulse, tied to El Niño, raises sea level by inches and makes high tides more dangerous when a storm arrives.
The Rocket News · Science Desk · La JollaOctober 2, 2026 · 3 min read
LA JOLLA — A Kelvin wave is heading up the California coast and bringing trouble, The New York Times reported. It is not a wave that breaks. It is a slow bulge of warm water, inches high and hundreds of miles long, that lifts the sea for weeks. NOAA has described these coastal pulses as changes of about six inches. This year’s set, tied to a strong El Niño, reached California in late spring. The next pulse was expected around the first of October.
When the equatorial pulse hits South America it cannot keep going east, so the energy turns north and south along the coast. Higher tides mean more erosion and a greater chance that a winter storm lands on an already high sea. The Times put the piece on Friday’s paper. The coast is the science note. The hiring number is on the economy page.
Wire and further reading: latimes.com
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