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 ...

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 ...

This blast of cold weather is due to activity of the polar vortex.

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

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

The polar vortex, a ring of frigid air typically located near the North Pole, will become stretched and displaced through early next week, carving a path across the central and eastern United States.

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 ...