A dramatic blast of cold air may be coming for the United States in late January, courtesy of the polar vortex. Here's what ...

This article originally published at Polar vortex sends another arctic blast barreling toward Texas. In today's edition: ...

A displacement of the Polar Vortex will usher in days of Arctic cold through the end of January. The core of the Polar Vortex ...

High above the Arctic, scientists are tracking a major change in the atmosphere this January, an event similar to what ...

With San Antonio expecting its first official freeze of the season in less than 24 hours, meteorologists are already eyeing ...

The Texas Panhandle is set to see the first of this frigid air blowing in from the north. By Thursday night, January 8, snow ...

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

Cross-polar flow describes a unique meteorological setup most common during the winter. This is often responsible for many of the intense Arctic outbreaks that occur in the U.S. each decade. For cross ...