During winter in the Northern Hemisphere, the polar vortex can often expand and send cold air south, often referred to as an ...

While the Northeast braces for another frigid polar vortex, Oklahoma will experience unseasonable temperatures. Here's when ...

A winter buzzword, explained.

The relentless winter of 2025-26 in the East is about to unleash its most brutal cold outbreak yet.

The one influencing Ireland picks up whatever is the prevailing air mass coming across the Atlantic. It’s often mild – influenced by warm air moving upwards from the Caribbean and the gulf stream – ...

After weeks of brutal cold and disruptive storms tied to the Polar Vortex, the atmosphere is finally pivoting. A new jet ...

A sharp, late-season flip in the jet stream is setting up a winter pattern that looks very different from the one that opened ...

Global climate models capture many of the processes that shape Earth's weather and climate. Based on physics, chemistry, ...

Several rounds of bitter cold are expected in the eastern U.S. through early March, after a stratospheric warming event ...

This canine cutie was ready to brave the cold.

There are 588 reported measles cases across the United States as of Jan. 29, including in Florida.