The west half of the country, including the Midwest, will start to warm up. But that won't be the case for the East Coast.

Deep penetration of cold temperatures and a coastal storm will bring bomb cyclone and polar vortex into your newsfeeds.

Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.

The FOX6 Weather Experts track the polar vortex and its impact on southeast Wisconsin. From emergency supplies to stick in ...

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States.

A winter storm descending on the US is expected to deliver heavy snow and ice to more than 150 million people across roughly ...

Tens of millions of people are in the path of a major winter storm. Federal cuts threaten efforts to understand the causes of such weather.

Temperatures could fall below -20 F across certain parts of North Dakota and Minnesota.

The North Pole is surrounded by a massive circular upper-air weather phenomenon in the Arctic called the polar vortex. It is ...

After this weekend's snow storm moves out, cold Arctic air will move in.

A collapse in the polar vortex is letting Artic air come here. What that means, and why it happens.

This winter, the Northern Hemisphere has been suffering from extreme cold. In South Korea, an unusually prolonged cold wave ...