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.

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

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

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.

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 ...

During the 2014 January polar vortex, more than 20 people across the country died from the cold as places like Georgia — which rarely see serious cold — dealt with lows under 10 degrees ...

Erin Davis/Axios VisualsA powerful Arctic outbreak tied in part to the polar vortex is set to send temperatures by next week ...