Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the ...

However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is bringing an even harsher arctic blast to million Americans this week. Maps show what to expect as the cold front ...

The polar vortex is a low-pressure system of cold air ... check out the beautifully simple diagram by the National Oceanic and Atmospheric Administration (NOAA) below. This effect, in part ...

It's a term you hear every couple of winters, when we get stuck in the coldest of cold patterns – polar vortex. But what exactly is it and how does it impact our weather? The polar vortex is ...

In short, the answer is the polar vortex. But what does that mean? The polar vortex is a “constant feature” that begins to develop sometime in September and persist through sometime in spring ...

And if the polar vortex is to blame. First, a quick refresher on the polar vortex. The polar vortex is a region of very strong winds that form a circle around the North Pole. The vortex is located ...

Much of the country will be hit with extreme low temperatures over the next week as a polar vortex sends cold air down from the North Pole. Real feel temperatures throughout the northeast ...

It's about to get very, very cold for lots of Americans. A series of blasts of polar vortex air from the north will bring subfreezing temperatures as well as ice and snowstorms to 40 US states ...

However, the polar vortex could bring severe weather conditions, including heavy snowfall and freezing temperatures, that could affect travel conditions or prompt school closures. According to ...