The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously ...

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

How the Polar Vortex Can Bring Arctic Blasts to the U.S. Vast weather patterns can carry blasts of frigid air far from the ...

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

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

The polar vortex is like a giant, swirling pool of super-cold air in the upper atmosphere over the North Pole. Imagine it like ... air can spill out and slide south, making places like the United ...

The polar vortex is expected to reach the Utah-Idaho border sometime in the late afternoon and evening Friday as it continues ...

This can form what is called a Polar Vortex. This isn’t anything new, it’s just a newer term. This is when the area of high ...

This will be due to a polar vortex, an area of strong winds that encircle the Arctic and typically keeps the coldest air locked near the Pole ... and go somewhere south," FOX Weather Meteorologist ...

The general meaning of the Polar Vortex is an upper-air storm that mostly keeps its center near the North Pole. The Polar Vortex ... and the center can dip as far south as Northern Michigan.

By Monday, extremely cold air will reach as far south as the Gulf ... that level of cold. The polar vortex, a ring of frigid air typically located near the North Pole, will become stretched ...