As the polar vortex begins to stir, subtle clues point to the coming seasonal shift. So, when will freezing temperatures ...

The polar vortex is a broad, fast ribbon of cold air that encapsulates the Arctic high in the stratosphere. Stable, it ...

The polar vortex is stirring up, bringing the earliest hints that the weather is changing with the new fall season. When is the first frost in Tennessee?

The polar vortex is starting to stir up, bringing the earliest hints that the seasons are changing. When will Ohio see its first freeze?

Temperatures are staying relatively warm throughout Illinois this week, despite fall officially starting Sept. 21. But ...

A rare phenomenon in the skies above Antarctica is likely to bring mixed weather for southern Australia in coming weeks.

While global temperatures are rising, climate change is paradoxically causing harsher and colder winters in many regions.

The planet is warming and as the evaporation from the surfaces of water bodies increases, so does the water-holding capacity ...

In upstate New York, La Niña winters often are influenced by strong westerly to northwesterly winds over the Great Lakes, which can enhance lake-effect snow for cities like Buffalo, Rochester and ...

Meteorologist Sven Sundgaard breaks down what the Pacific ‘heat blob’ really means for Minnesota’s winter. You may have seen ...

To be classified as a derecho, a windstorm must have winds of at least 58 mph, some gusts over 75 mph and a wind damage path ...