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 ...

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 ...

But during the winter, it is joined by a second atmospheric phenomenon dubbed the polar vortex. This swirl of frigid air, located more than 10 miles above Earth’s surface, strengthens each year ...

things get a little chaotic. A weaker jet stream becomes wavy and unstable, like a loose rope in the wind. This instability allows cold Arctic air from the polar vortex to spill southward into ...

Most of the U.s. enjoyed warmer air to end the workweek, but the warmup will be brief as a polar vortex will send temperatures tumbling below freezing for most of the nation starting this weekend.

Most of the US will enjoy milder temperatures on Thursday, but the warmup will be brief as a polar vortex will send temperatures tumbling below freezing for most of the nation starting this ...

ELMIRA, N.Y.(WETM) – We start the following work week with a polar vortex. This will bring in unseasonably cold air to the region and wind chill temperatures back to the negatives. But what is a polar ...

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The polar vortex is responsible for next week’s cold, which will bring extreme cold as far as the deep south. The cold air will hang around Monday, Tuesday and Wednesday, bringing below-zero ...

These outbreaks can happen when the polar vortex is in a weaker state, allowing cold air that is normally confined to the north to break off and move further south. Some experts say this is ...