The long-range data shows we may be done with a true Arctic air mass similar to what we experienced in January. But we ...

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 ...

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

The mere mention of the term “polar vortex” can set your head spinning (and maybe eyes rolling). It’s got to be clickbait, right? Or maybe someone dreamed up the name for views? Is it a storm?

A lobe of the polar vortex, a stormy ring that typically keeps the coldest air locked up near the North Pole, will dip southward into the United States this weekend into next week. Polar air ...

The result is that this flow acts like a bit of a “fence” which keeps the more frigid air on the north side of the imaginary fence. Strength: The polar vortex strengthens in winter due to the ...

The vortex is essentially an area of low pressure in the upper layers of the atmosphere over the polar region up north. This ...

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 ...

Most of the US will enjoy milder temperatures on Thursday, but the warmup will be brief as a polar vortex will send temperatures tumbling below freezing for most of the nation starting this ...

A dangerous and potentially life-threatening stretch of cold weather has much of the U.S. on alert as a lobe of the polar vortex invades the nation and sends temperatures tumbling to levels not ...