A polar vortex is a large, low-pressure system of cold air that typically resides near the Earth’s poles, surrounded by ...

The first of three rounds of bitter air has arrived, threatening record lows in cities from the Midwest to the Northeast.

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

It’s a pattern responsible for holding back the coldest temperatures on the planet. The lowest readings ever recorded in Canada and around the northern hemisphere occurred when this Arctic feature ...

Will the polar vortex change Alabama’s winter outlook and could it set the stage for a white Christmas? Here’s what we know so far.

Polar lows and mesoscale cyclones represent a distinctive class of intense, short‐lived storm systems that frequently form in the cold maritime environments of the Nordic Seas. These phenomena, driven ...

The Antarctic winter sea ice maximum is on track to be the second lowest on record, at 17.15 million square km² (6.62 million mi²), close to the 2023 record low of 16.96 million km² (6.55 million mi²) ...

Enjoy your balmy Monday, South Florida: The polar vortex snarling much of the U.S. in snow and ice is on its way — and it’s planning to chill here for a few days. The National Weather Service is ...

This is a diagram of the spatial frequency distribution of polar lows in the North Atlantic. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert ...