Under the Rotunda of the U.S. Capitol, Donald Trump was again inaugurated, this time as the 47th president of the United ...

The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously ...

Polar vortex brings frigid air to US, making Trump's inauguration coldest in 40 years, moved indoors due to cold.

Arctic air has brought chilling temperatures as low as 12 degrees in New York City on Monday night but are we in a polar ...

A lobe of the polar vortex will arrive in the United States this weekend, bringing the lowest temperatures in years and snow ...

The polar vortex will soon elongate over North America with a dangerous cold moving into sections of Canada and the U.S.

MINNEAPOLIS, Minnesota — Our entire region is under an Extreme Cold Weather Warning until 12 p.m. Tuesday; wind chills could fall as low as -45 degrees. This Arctic blast is thanks to a polar vortex.

This blast of frozen temperatures is tied to a polar vortex... but what is that? Air spins around the notoriously cold North and South Poles. When the air is spinning fast, it's stable, but when it is ...

One of the most notable and widespread Arctic outbreaks that we have seen across North America since 2014 is on the way ... RELATED: What is the polar vortex? How it’s responsible for dangerous cold ...

Every few years or so, a dip in the jet stream allows this cold air to sink into the U.S. The last few visits from the polar vortex occurred in 2021, 2019, and 2014.