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La Niña Arrives, Threatening to Stoke Droughts and Roil Markets

/in , , /by /Bloombergby Brian K Sullivan

A weather-roiling La Niña appears to have emerged across the equatorial Pacific, setting the stage for worsening droughts in California and South America, frigid winters in parts of the U.S. and Japan and greater risks for the world’s already strained energy and food supplies.

The phenomenon—which begins when the atmosphere reacts to a cooler patch of water over the Pacific Ocean—will likely last through at least February, the U.S. Climate Prediction Center said Thursday. There is a 57% chance it be a moderate event, like the one that started last year, the center said.

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La Niña Threatens to Return and Worsen Drought in U.S. West

/in , /by /Bloomberg Greenby Brian K Sullivan

The possible return of La Niña threatens to give the drought-ravaged U.S. West another winter without much rain or snow.

The U.S. Climate Prediction Center issued a watch for La Niña on Thursday, saying there’s a 66% chance the phenomenon will return for a second straight year some time in the November-January period. La Niña occurs when the equatorial Pacific Ocean cools, triggering an atmospheric chain reaction that can cause droughts across the western U.S. and roil weather systems globally.

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