What is polar vortex and how much snow is expected in US? A winter storm linked to polar vortex disruption has impacted ...

A severe winter storm that brought freezing rain, sleet and snow to a large part of the U.S. was intensified by the polar ...

In the wake of the historic winter storm that blasted 40 states this weekend, a dome of Arctic air associated with the polar ...

The Vortex Optics AMG 1-10X 24 mm FFP riflescope is the shortest and lightest FFP 1-10X low-power variable optic made ...

A massive winter storm driven by a weakened polar vortex has swept across the United States, killing at least seven people ...

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

Environment and Climate Change Canada has issued a yellow snowfall warning for the Montreal area Sunday, as thousands are ...

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

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

A powerful winter storm is moving across the United States, disrupting travel, cutting power to thousands, and unleashing ...