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

Imagine the polar vortex as a giant, icy whirlpool far above the Earth, keeping frigid Arctic air contained near the north ...

The polar vortex is like a giant, swirling pool of super-cold air in the upper atmosphere over the North Pole. Imagine it like a children's spinning top. When the top is spinning fast and steady ...

It's like "bomb cyclone" or "firenado." It seems like the sort of phenomenon that would be responsible for the ...

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 ...

Like much of the U.S., Wisconsinites woke up Tuesday morning to bitter cold conditions. Many schools and colleges throughout the Milwaukee area closed as the area braced for the dangerous freezing ...

These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary ...

Some of the coldest air in years is expected to plunge into the High Plains, Midwest and finally the East in the coming days ...

This blast of frozen temperatures is tied to a polar vortex... but what is that? Air spins around the notoriously cold North and South Poles. When the air is spinning fast, it's stable, but when it is ...

And even though polar vortex antics ... The South Pole is located in the continent of Antarctica, surrounded by the Southern Ocean. In contrast, in the north Arctic sea ice is surrounded by ...

The polar vortex is always around. It is a channel of strong winds high up in the atmosphere that circles the poles. One over ...