A big blob of cold water is rising from the depths in the equatorial Pacific, heralding the likely arrival of La Niña by fall
What a difference a few months make. In January, El Niño was still going strong. But now, not only is it waning but there is a 75 percent chance that its opposite — La Niña — will develop by fall, according to the latest monthly update from the Climate Prediction Center.
SEE ALSO: If La Niña follows the current super El Niño, it will probably be bad news for droug