Sudden stratospheric warming is expected to keep a weakened vortex splintered, plunging the region back to record-breaking ...

A polar vortex will linger through much of the country for most of this February, prolonging the deep freeze for weeks to ...

Forecasters are warning that the breakdown of the polar vortex high above the Arctic will not bring relief from winter, but ...

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

The bitter cold temperatures that have left a chill over the eastern half of the country aren’t going anywhere, as a major disruption to the Polar Vortex is coming this month.

As the U.S. prepares to take on another bout of cold weather, the term "polar vortex" is getting thrown around. But what is ...

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. Here's the forecast.

Much below normal temperatures should persist across the eastern U.S. into early February before moderating slightly.

Climate deniers are quick to say ‘I told you so’ when the mercury drops. But a warmer planet impacts weather in ways that can ...

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

The bitter cold temperatures that have left a chill over the eastern half of the country aren't going anywhere, as a major ...

To understand what Americans are experiencing with this winter blast, we need to look more than 20 miles above the surface of ...