Severe droughts in East Africa and the southern United States accompanied the last La Niña earlier this year, as did devastating floods in Australia, Indonesia and parts of South America.
Disaster and humanitarian officials are expressing concern over the World Meteorological Organization’s latest prediction of a 50 percent chance La Niña will return, even in a milder form.
Water temperatures had returned to near normal over the tropical Pacific by early August. But they have since cooled back to what is considered a marginal La Niña.
Several computer models project that the resurgent cooling will peak at the end of this year, then gradually disappear over the following few months.
Sea-Surface Temperature Data: NOAA