Intense cold is settling in over the northeastern United States after winter storms brought snow and ice. Will the bitter ...

While the Northeast braces for another frigid polar vortex, Oklahoma will experience unseasonable temperatures. Here's when ...

As another winter storm hits Western North Carolina and other regions, here's what to know about deciphering forecaster terms ...

A winter buzzword, explained.

During winter in the Northern Hemisphere, the polar vortex can often expand and send cold air south, often referred to as an ...

As a winter storm approaches Western North Carolina and other regions, here's what to know about deciphering forecaster terms ...

Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all ...

Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march ...

The meteorologists said the polar vortex system is set up due north of Michigan over Canada's Hudson Bay. It's at least partly responsible for the frigid temperatures around the region that ...

The polar vortex is sending arctic blasts and chilly temperatures to most of the United States, and states from Texas to Oklahoma could see snow, sleet and ice. As of Wednesday, Jan. 21, millions of ...