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

Understanding the Polar Vortex The polar vortex is like a massive whirlpool of frigid air moving around our planet's poles.

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

Europe may be in for another cold blast like the one that surprised forecasters and sent gas prices soaring last week, with the potential weakening of winds that keep frigid air confined to the Arctic ...

Scientists say a warming planet may have been responsible for a winter storm that dropped 10 inches of snow on Northwest ...

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 ...

Depending on the strength of the polar jet stream determines how the Polar Vortex moves. When the polar jet stream is strong the Polar Vortex is kept at bay and stays in the Arctic. When it is ...

Some 60 million people are under weather alerts across 30 states. Seven of them have declared emergencies: Maryland, Virginia, West Virginia, Kansas, Missouri, Kentucky and Arkansas ...

"There are many things that can change the strength of the polar vortex," Butler says. Sea ice is one of them – some models suggest melting sea ice may have a weakening effect on the vortex.

The polar vortex can be a powerful source of winter weather, but it's not the only cause of severe cold and snow in regions better known for warmth and sunshine. The Gulf Coast states are still ...

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