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

How the Polar Vortex Can Bring Arctic Blasts to the U.S. Vast weather patterns can carry blasts of frigid air far from the polar regions—here’s how it works ...

A lobe of the polar vortex will arrive in the United States this weekend, bringing the lowest temperatures in years and snow and ice to the East and Deep South.

Winter in the CSRA is usually mild overall, but every now and then, we get a taste of true Arctic air. If you’ve ever ...

Like much of the U.S., Wisconsinites woke up Tuesday morning to bitter cold conditions. Many schools and colleges throughout ...

two bands of fast-moving air – the polar jet stream and the stratospheric polar vortex – sometimes tango together to influence weather in the northern hemisphere. As the Arctic continues ...

The mere mention of the term "polar vortex" can set ... As its name implies, the circumpolar vortex is a counterclockwise-spinning (northern hemisphere) swirl of super-cold air in the upper ...

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

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

Here's what to know. What is a polar vortex? A polar vortex is a low pressure area where air swirls counterclockwise keeping it parked in polar regions. During winter, the polar vortex at the ...