Weather Watch

La Niña’s Return Threatens Deadly Weather and Extensive Crop Damage

The climate phenomenon is often linked with droughts in California, Argentina and Brazil, and the destructive flooding that recently swept Southeast Asia.

Villagers cross a river in a makeshift cable car after a flash flood in Aceh, Indonesia this month.

Photographer: AMANDA JUFRIAN/AFP
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Deadly flooding in Asia and early snowstorms across the US are signaling the return of a weather-roiling La Niña, a cooling of Pacific waters that can disrupt economies and trigger disasters worldwide.