WASHINGTON (AP) — La Niña, the cooler and at times costlier flip side of El Niño, has arrived to warp weather worldwide, meteorologists said Thursday. This natural weather phenomenon often ...

A transition from El Niño-Southern Oscillation-neutral conditions to La Niña conditions is looking likely, according to a Sept. 11 outlook by the National Weather Service’s Climate Prediction Center.

As a taste of fall gives much of the United States a break from a hot, humid summer, some forecasters are already skipping ahead to winter, and a possible homecoming for an important atmospheric ...

After a short absence, climate troublemaker La Niña is back, and forecasters say it could have a big impact on the winter weather outlook. La Niña is a part of a natural climate cycle officially known ...