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

The polar vortex will engulf much of North America as we head into next week, with temperatures dipping down into the -20s and -30s in some Canadian provinces. Even states like the Carolinas, Georgia, ...

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

The polar vortex will bring single-digit temperatures and negative wind chills to the Poconos.

Cancel all your plans this week—you’re staying indoors. The North Pole has unleashed "a large pool of Arctic air" that’s ...

Our observed minimum wind chills from Friday morning ranged from -20° to -30°! We’re not done yet! Friday’s actual temperatures could fall below -15° for some.

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An extreme polar vortex moving from the Arctic across North America is expected to arrive in Quebec by Friday and persist ...

Bitter cold temperatures are expected to continue throughout the week in Chicago, with wind chills plunging to minus 20, the National Weather Service said. A cold weather advisory is in effect until ...