A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to ...

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

A major winter blast of snow, ice, wind and plunging temperatures in the U.S. stirred dangerous travel conditions from ...

Learn more. The eastern U.S. is on track for a frigid week as a polar vortex stretches south, bringing below-normal temperatures to Maine. Starting Monday, much of the eastern two-thirds of the ...

Bitter temperatures are forecast to hit swathes of the U.S. this weekend as a polar vortex—the area of cold air that ...

A lobe of the polar vortex will arrive in the United States this weekend, bringing the lowest temperatures in years and snow and ice to the East and Deep South.

Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.

However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is about to bring even harsher arctic blast to nearly 300 million Americans starting this weekend. Maps show where and ...

MINNEAPOLIS, Minnesota — Our entire region is under an Extreme Cold Weather Warning until 12 p.m. Tuesday; wind chills could fall as low as -45 degrees. This Arctic blast is thanks to a polar vortex.

In Vermont, New Hampshire and Maine, temperatures could fall below zero. Polar Vortex:Polar vortex expected to hit Rhode Island next week. Here's latest temperature forecast Freezing temperatures ...

Stable polar vortex: When the stratosphere over the Arctic is cold, it's considered stable. The wind around the polar vortex ...

The eastern U.S. is on track for a frigid week as a polar vortex stretches south, bringing below-normal temperatures to Maine. Starting Monday, much of the eastern two-thirds of the country will see ...