Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all ...

An unusually brutal winter storm is set to pummel more than 160 million Americans from Friday, as a stretched "polar vortex" sends a devastating blast of Arctic air, bringing heavy snows and freezing ...

Tens of millions of people are in the path of a major winter storm. Federal cuts threaten efforts to understand the causes of such weather.

The frigid temperatures, massive snow and deadly ice storm taking shape east of the Rockies might seem to conflict with life on a rapidly warming planet. But all of these things still happen, even ...

The sudden blast may come as a shock to many Americans after a mostly mild start to winter, but that warmth may be partly ...

Across the United States, winter storms are colliding with a warmer atmosphere and a disrupted Arctic, turning familiar ...

So last year, Chalif led a study that used machine learning to analyze climate records stretching back to 1901. The team ...

The North Pole is surrounded by a massive circular upper-air weather phenomenon in the Arctic called the polar vortex. It is ...

A severe winter storm in January 2026, impacting the U.S. from Texas to New England, highlights the dynamic role of the stratospheric polar vortex. Despite global warming, intense winter storms ...

The term "polar vortex" has gained popularity in recent years, but the phenomenon itself is not new. According to the U.S. National Weather Service, the polar vortex refers to the counterclockwise ...

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States.