In the stratosphere over Siberia, temperatures recently jumped nearly 100 degrees Fahrenheit, shoving the polar vortex off its North Pole perch.

The polar vortex could be reversing in a sudden stratospheric warming event, with the potential to send Arctic air and storms to the central and eastern U.S.

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This phenomenon has also already struck Europe and China this summer, leading to the temporary closure of the Eiffel Tower and worries about wilting rice crops, respectively ...

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

Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. In a study appearing in Science Advances, ...

Three factors are combining to increase the likelihood of a weaker polar vortex this winter, the website reports. And a ...

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 ...

Much of the U.S. is being blasted by ice, snow and wind, as the polar vortex that dipped south over the weekend is maintaining its frigid grip.

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. It will stay frozen there all ...

Earth’s major climate goal is too warm for the polar ice sheets, study says If Earth stays at its current levels of warming — below policymakers’ goal of 1.5 degrees Celsius — polar ice ...