A Siberian chill is on the horizon, threatening to plunge the U.S. into a deep freeze in parts of the east coast ...

The vast majority of Americans are about to get an extended taste of frigid Siberian weather. Another polar vortex disruption ...

NEW ORLEANS — The vast majority of Americans are about to get an extended taste of frigid Siberian weather. Another polar ...

A huge swath of the U.S. was blasted with ice, snow and wind on Monday as the polar vortex that dipped south over the weekend kept much of the country east of the Rockies in its frigid grip ...

But during the winter, it is joined by a second atmospheric phenomenon dubbed the polar vortex. This swirl of frigid air, located more than 10 miles above Earth’s surface, strengthens each year ...