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

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States.

A massive winter storm is expected to impact more than half of the United States with some help from an arctic air mass.

Extremely cold air is going to take over Michigan, as the center of the Polar Vortex drops far south to just north of ...

The severe weather pattern is caused by disruption of the polar vortex, which normally remains uniform over the North Pole.

The big winter (and popular) topic is dusted off very early this season as frigid air plunges south next weekend. But what is ...

Large swaths of the United States will get an arctic blast this week, leading to heavy snow, sleet, and freezing rain in ...

A gargantuan winter storm, aided by a deep surge of Arctic air, is forecast to affect over half of the population in the ...