Understanding the Polar Vortex The polar vortex is like a massive whirlpool of frigid air moving around our planet's poles.

A winter storm sweeping through the U.S. South on Tuesday was dumping snow at levels millions of residents haven’t seen before.

BOSTON (AP) — Residents across the country from the Northern Plains to the tip of Maine are bracing for dangerously low ...

The intense cold snap that has settled over most of Canada and the U.S. has been dubbed a “polar vortex’, but Environment ...

Very cold arctic air will interact with several systems to bring chances of freezing rain, sleet, and snow ...

The polar vortex is expected to reach the Utah-Idaho border sometime in the late afternoon and evening Friday as it continues ...

People living "basically anywhere from the Rockies eastward" will see extremely cold temperatures over the next several days, ...

A blast of Arctic air is set to cover much of the United States with temperatures below freezing starting on Friday and into ...

Parts of Mississippi can expect snow, below-freezing temperatures, lows in the teens next week. Know how to prep your home, ...

But often during winter, the polar vortex will expand, bringing its cold air south and ... according to historical data. The ...

The temperature is predicted to be around 22 degrees during the swearing-in, the coldest since Ronald Reagan’s second ...

Parts of Mississippi can expect freezing temperatures, lows in the teens in the coming week. Know how to prep your home, ...