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 ...

The phrase “historic polar vortex” evokes a country locked in ice from the Great Lakes to the Gulf, but the most reliable ...

Frigid temps and heavy snow gripped much of the U.S. on December 1, the first day of meteorological winter. It looks like ...

A rare and exceptionally early disruption of the polar vortex is sending brutally cold air across much of the United States, ...

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

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

The 2025 ozone hole is the fifth smallest since 1992, signaling significant progress in the recovery of Earth’s protective ozone layer thanks to international efforts like the Montreal Protocol.

Ken Mahan explains the “tug of war” that will determine our winter weather, when to know what you’re in for this Thanksgiving, and how he tracks changing conditions.

Early-season stratospheric warming events spark hype around frigid temperatures. Learn the myths and the science about the ...

But across the country, AccuWeather meteorologists are predicting major travel disruptions as a storm system is set to batter ...

This winter will be marked by a La Niña event, warmer North Pacific waters, and an undulating polar vortex where cold air ...

The polar vortex could be disturbed in a way that hasn't happened this early in 25 years. You’d be forgiven for being ...