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File: enso-blog-evolution-of-la-nina-events-atmospheric-2024-12-12--corrected-01.png

Two line graphs side by side showing that winds and cloudiness in the the tropical Pacific are already consistent with La Niña

Image caption

Two ways of looking at the atmospheric conditions in the tropical Pacific: the Equatorial Southern Oscillation (left) and cloudiness in the central Pacific (right). The colored lines show 2024, while the gray lines are every La Niña on record. Both measurements provide evidence that the Walker circulation is stronger than average, a La Niña atmospheric signature. Climate.gov graph, based on data from Michelle L’Heureux.