There are more ways than we knew for the stratospheric polar vortex to get disrupted, shooting cold air southwards across ...

Even in a warming climate, brutal cold snaps still hammer parts of the U.S., and a new study uncovers why. High above the ...

The mechanism involves atmospheric waves that bounce between the upper atmosphere and ground level, amplifying weather patterns and making them more extreme. Scientists call this “stratospheric wave ...

The polar vortex has returned to the U.S., and frostbite-inducing temperatures are blasting millions of Americans.

DES MOINES, Iowa — The coldest burst of Arctic air this season is coming to put an icy exclamation point on America's winter of repeated polar vortex invasions, meteorologists warn. And it will ...

America is bracing for a brutal Arctic blast with dangerously low temperatures as a massive polar vortex smashes the country. Chicago alone could face -20 to -30-degree temperatures next week in a ...

The coldest burst of Arctic air this season is coming to put an icy exclamation point on America’s winter of repeated polar vortex invasions, meteorologists warn. And it will stay frozen there ...

The coldest burst of Arctic air this season is coming to put an icy exclamation point on America’s winter of repeated polar vortex invasions, meteorologists warn.