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

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 ...

When the polar vortex stumbles, the weather at ground level can pivot from mild to brutal in a matter of days. A circulation ...

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 ...