Pipes can freeze when the temperature outside dips below -6 degrees Celsius for an extended period of time ( more than four ...

The sudden blast may come as a shock to many Americans after a mostly mild start to winter, but that warmth may be partly ...

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.

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

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

Starting Thursday, dangerously frigid air from Siberia and the North Pole is forecast to plunge the Great Lakes region into ...

The polar vortex will push Artic air south, and a severe winter storm could follow. How cold will it get in Louisiana?

A shift in the polar vortex has forecasters watching closely as the coldest air of the season approaches. Here's what to know ...

The incoming Arctic blast will bring very cold temperatures to West Michigan, but it still falls short of the historic, ...

The polar vortex is set to bring a winter storm to parts of Mississippi with ice, snow. But extreme cold will last for days.

Alabama braces for another polar vortex blast bringing well below freezing temperatures. How cold will temperatures get? Here ...

The atmosphere is a complicated place. Warm temperatures in one spot can contribute to brutally cold storms somewhere else.