While forecasters can't yet say for sure, a warmer stretch of weather appears likely for much of the nation. Here's when to ...

Windchill temperatures as low as minus 30 degrees are a risk to life, forecasters said.

More dangerously cold air is on the way for much of the U.S. Will Tennessee be impacted? Here's what to know.

Extreme cold warnings span several eastern states as of Friday, with meteorologists warning of frigid wind chills.

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

A major weather pattern change underway across U.S. As we get into next week, the storm track looks really interesting.

During winter in the Northern Hemisphere, the polar vortex can often expand and send cold air south, often referred to as an ...

With the polar vortex intensifying next week, the jet stream will acquire strength, however, in an approximate west-to-east pattern across the U.S. and southern Canada, AccuWeather senior ...

The polar vortex that has locked much of the country into a deep freeze is finally loosening its grip, and the atmosphere is already lining up a very different pattern. Forecasts point to a sharp but ...

The Polar Vortex is expected to be impacted by a Sudden Stratosphere Warming, bringing cold air to the eastern US.

While the Northeast braces for another frigid polar vortex, Oklahoma will experience unseasonable temperatures. Here's when ...

This winter’s harsh run is intensifying, with some of the coldest air so far this season plunging into New Hampshire.