A polar vortex dipping down from Siberia will bring a cold front with frigid temperatures to nearly 300 million Americans. See maps of the arctic blast.

Preparations are underway as an arctic blast dives into the nation's interior and southern regions and pushes a snowstorm into the Mid-Atlantic and Northeast that will be followed by lethal cold.

Dangerously cold weather spread over the Midwest on Saturday and is headed toward the East Coast, where temperatures well below seasonal norms are expected starting late Sunday and into next week.

Temperatures will plummet as Arctic outbreak brings frigid weather to much of the U.S. Much of the United States will see temperatures plummet 20 to 40 degrees below average when a major Arctic outbreak bringing frigid temperatures sweeps through the country.

The Arctic is heating up particularly fast as a result of global warming—with serious consequences. The widespread permafrost in this region, where soils currently store twice as much carbon as the atmosphere,

Extreme cold could expose residents of several states to conditions like hypothermia and frostbite over the weekend.

A brutal polar vortex is set to bury the Big Apple in snow Sunday and then deliver deadly single-digit temperatures that will feel like 15 degrees below zero.

After a looming snowstorm hits the Tri-State Area on Sunday, arctic air is expected to chill New York City and the surrounding areas. According to a post on the National Weather Service’s X account, the National Weather Service is warning that there might be significant impacts on infrastructure and public health.

Permafrost thaw poses multiple risks to local Arctic communities, their livelihoods, infrastructure and environment. A transdisciplinary study led by Umeå University and others has identified key risks across four Arctic regions.

With the Arctic freeze on its way to Colorado and expected to last for several days, it's important to keep your pets well-protected during this deep freeze.

It will be the coldest Inauguration Day since former President Ronald Reagan’s second inauguration in 1985, when the noon temperature was 7 degrees.