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File: enso-blog-la-nina-weak-counts-map-20241022.png

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Alternate Text: Map of North America showing that the snowfall patterns during weak La Niña winters are largely the same as during all La Niña winters, with below-average snowfall across the southern United States and above-average snowfall across the northern United States..
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Map of North America showing that the snowfall patterns during weak La Niña winters are largely the same as during all La Niña winters, with below-average snowfall across the southern United States and above-average snowfall across the northern United States..

Image caption

This map shows how many of the 9 historical weak La Niña winters from 1959–2024 had below-average snowfall from January–March. Red colors mean those places had below-average snowfall more than half the time. Gray colors mean those places had below-average snowfall less than half the time. The long-term trend in snowfall over this period has been removed to better show the influence of weak La Niñas by themselves. NOAA Climate.gov map, based on ERA5 reanalysis data and analysis by Michelle L’Heureux.