Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. In a study appearing in Science Advances, ...

Three factors are combining to increase the likelihood of a weaker polar vortex this winter, the website reports. And a ...

The polar vortex that brought the Chicago area to a halt in January will now be remembered as producing the state’s coldest temperature ever, according to weather officials. Weeks after the d… ...

You’ve probably already reached for your parka upon reading “polar vortex.” But for the blissfully uninitiated: When Chicago gets hit with one, crippling snowstorms can occur and ...

ABC7 Meteorologist Cheryl Scott sits down with Illinois state climatologist Trent Ford to dive deeper into the meaning of the polar vortex and its impact here in Illinois.

A record cold snap in the US has left 21 dead. Here's what makes these polar-vortex events so dangerous and why we may see more of them in the future.

As the polar vortex blankets the Chicago area with life-threatening cold temperatures this week, rail crews are literally turning up the heat in order to keep trains running.

The Arctic air in Chicago is dangerously cold, so much so that earlier on Tuesday Illinois Governor JB Pritzker issued a statewide disaster proclamation, which is equivalent to a state of emergency.

The polar vortex is an ever-present, large area of low-pressure and frigid air surrounding the Earth's poles.

The United States has been at the epicenter of the planet’s most unusually cold conditions early in 2025. The polar vortex is to blame.

Illinois police department shares photos of Frozen's Elsa "under arrest" for bringing polar vortex ...