The Upper Midwest and Northern Plains have been hit by Canada's freezing temperatures. On Thursday, Dec. 4, wind chills ...

A rare atmospheric collision is poised to deliver unprecedented Arctic air across North America in December 2025. On November ...

Over the next 10 days, scientists say, changes in the stratosphere will upend weather patterns and set the stage for a cold, snowy December across parts of the Northern Hemisphere.

This dramatic-sounding phenomenon is a naturally occurring component of the Earth’s atmosphere that can play a huge role in ...

Some light snow is possible across much of New Jersey on Friday night after an Arctic blast of much frigid air could ...

The phrase "polar vortex" has captured public attention and is now often misused to describe short-term bouts of frigid ...

A significant change in the atmosphere means the weeks after Thanksgiving could be colder and snowier than normal across ...

High above the North Pole, about 10 to 30 miles above Earth’s surface, sits a massive whirlpool of icy air known as the polar ...

A rare stratospheric warming event high above the Arctic could disrupt the polar vortex and send colder air toward Texas in ...

A Sudden Stratospheric Warming Event describes the rapid warming and disruption of the stratospheric polar vortex above the ...

As we look toward mid-December into January, the door is opening for some potentially significant winter weather.