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

This blast of frigid temperatures will be delivered by the polar vortex, a large area of low pressure and cold air that swirls counterclockwise around the North Pole. Typically, its swirling keeps it ...

The polar vortex is a massive area of cold air located high in the atmosphere, typically spinning over the north pole. Imagine it as a giant, icy whirlpool far above the Earth, keeping frigid ...

Recent forecasts suggest some Americans might be getting a much-needed break from the freezing temperatures that have gripped much of the country.

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

The University of Wisconsin-Madison faced a frigid start to the semester, with the polar vortex expected to bring more icy ...

With last week's freeze being the second time temperatures dipped below freezing this winter, many are wondering if this ...

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 ...

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 ...

A lobe of the Polar Vortex is going to swing through Ontario just north of Michigan. The upper-air forecast gives us an easy look at this strong winter player. The general meaning of the Polar ...

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