She’s back! La Niña has arrived, and its global ripple effects are already taking shape. Cooler-than-average sea surface temperatures in the tropical Pacific, combined with stronger trade winds, are ...

The week began with a biting cold snap that hammered much of the U.S., the product of a jet stream that slips out of its ...

The weather event is so rare that meteorologist Jim Cantore can barely contain his excitement when he's recorded in viral videos witnessing it.