Anna Skinner is a Newsweek senior reporter based in Indianapolis. Her focus is reporting on the climate, environment and weather but she also reports on other topics for the National News Team. She ...

The polar vortex is a broad, fast ribbon of cold air that encapsulates the Arctic high in the stratosphere. Stable, it confines cold air near the North Pole. Unstable, it is rocked and stretched out ...

Some forecast models have suggested lobes of the polar vortex's frigid airs could push far into the southern United States. With Texas being one of the most populous U.S. states, the prospect of ...

A second bout of severe winter weather pummeled the central United States on Friday with freezing temperatures and icy conditions. It arrived just days after a massive winter storm, traveling from ...

ROCHESTER, N.Y. (WROC) — The buzzword made famous from an arctic blast in 2015 is making a comeback. The polar vortex, a rotating bubble of cold air around the North Pole, is about to break off and ...

It’s really, really cold again — as the US shivers through at least the eighth blast of air from the Arctic this winter. Winter, which is warming faster than any other season for much of the US, seems ...

Editor's note: CNN’s Laura Paddison contributed to this report. (CNN) — It’s really, really cold again — as the US shivers through at least the eighth blast of air from the Arctic this winter. Winter, ...