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La Niña can lead to droughts in South America. Photographer: Sebastian Lopez Brach/Getty Images
The odds of a weather-roiling La Niña in the coming months are rising, elevating the risk of an unusually active Atlantic hurricane season.
The chances of La Niña, a cooling of the equatorial Pacific, rose to 82% for August, September and October, the U.S. Climate Prediction Center said. In February, there was a 74% chance.
“The numbers edged upwards, not dramatically, and the timing still seems to be the same as to what we were predicting last month,” said Michelle L’Heureux, a forecaster with the center.
La Niña can lead to droughts in South America and California, and more rain across parts of Indonesia and Australia. Currently a strong El Niño, or warming in the Pacific, is winding down. La Niñas often follow intense El Niños because of a phenomenon known as discharge, when heat on the equator migrates toward the poles and cold deep-ocean waters rise to take its place.
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