The greater Philadelphia region will experience no weekend letup in the prolonged cold snap gripping the area.

Jupiter and Saturn may be similar in size and made of the same gases, but the weather at their poles tells a different story.

A storm along the East Coast that’s expected to develop into a nor’easter this weekend has the potential to rapidly intensify ...

The sudden blast may come as a shock to many Americans after a mostly mild start to winter, but that warmth may be partly ...

Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.

The North Pole is surrounded by a massive circular upper-air weather phenomenon in the Arctic called the polar vortex. It is ...

It exists all the time, but it usually gets stronger in winter. When the jet stream (a river of wind) bends and dips south, ...

As the U.S. prepares to take on another bout of cold weather, the term "polar vortex" is getting thrown around. But what is ...

WASHINGTON (AP) — Warm Arctic waters and cold continental land are combining to stretch the dreaded polar vortex in a way ...

Alabama braces for another polar vortex blast bringing well below freezing temperatures. How cold will temperatures get? Here ...