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

A huge winter storm blasting across the country could cause power outages, including here in South-Central Pennsylvania.

A winter storm is expected to cause numerous closings and delays for schools, businesses and churches in South-Central ...

Savage blizzards crippling Canada and the US will send a battering-ram jet stream across the Atlantic to ward off the looming ...

A massive disruption in the polar vortex has encased Moscow's tallest tower in ice and frozen pasta mid-air in Minneapolis.

With a subpar winter still looming and above average temperatures remaining across the mountains, a big shift is needed for ...

What is the polar vortex? Mississippi weekend weather forecast calls for winter storm with lows in the teens, paired with ...

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.

What is the polar vortex? This article explains what a polar vortex is in simple terms, how it influences winter weather in ...

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

Polar vortexes are girdles of swirling cold air and low pressure surrounding the Earth’s poles. The Arctic one can cause ...