CLEVELAND — High above the Arctic, swirling like a giant icy crown, the polar vortex is a permanent feature of our atmosphere ...

The polar vortex is making a return to the forecast, but the counterintuitive weather feature is nothing to fear.

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

North Carolina's first freeze typically occurs between late October and mid-November, depending on the specific location. The ...

A cold winter is in store for those in the northern U.S., with milder temperatures across the southern tier, according to ...

Mars’ north polar vortex locks its atmosphere in extreme cold and darkness, freezing out water vapor and triggering a dramatic rise in ozone. Scientists found that the lack of sunlight and moisture ...

The polar vortex, a mass of cold air over the Arctic, is beginning its seasonal strengthening. A strong polar vortex ...

The polar vortex is stirring up and bringing the earliest signs of changing weather. Here's when and what to know about the first frost in Pennsylvania ...

Alaska Airlines passenger assaults crew members mid-flight, forces diversion Largest evacuation in recent memory underway ...

High above the Arctic, powerful winds are breaking apart — and the effects could reshape the planet. This film investigates how a collapsing polar vortex might lead to a new Ice Age.

But nights are getting a hint of a chill, and winter will be here before you know it. The polar vortex is stirring over the far north, which will lead to cooler weather, including some storms, over ...

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