Three separate rounds of Arctic air have already swept across the central and eastern United States through mid-December, ...

A polar vortex is set to push frigid winds throughout the nation this month, posing heightened risks for vulnerable populations.

Something unusual may be brewing in the stratosphere, and meteorologists say it could change the course of the winter forecast. The atmosphere is at a "critical juncture," and what happens in November ...

A weakened polar vortex is expected to bring frigid Arctic air to the central and eastern United States. Louisville could see temperatures in the single digits with wind chills as low as -8 degrees. A ...