Don't be fooled by the string of uneventful weather — the polar vortex is rebooting and will take another swing, or several, at the greater Philadelphia region, leading to a turbulent weather pattern ...

This story has been edited to correct an error. Judah Cohen is affiliated with the Massachusetts Institute of Technology. Our old wintertime friend the polar vortex ...

Michigan is experiencing frigid temperatures and heavy snow due to a dip in the jet stream, not the polar vortex. The polar vortex is a large-scale cyclone of cold air that typically stays far north ...

With over 170 million Americans facing below average temperatures, even colder air may be on the horizon thanks to the displacement of the polar vortex that will lock in a deep winter feel and park ...

The first thing most people will notice about the Vortex AMG 1-10×24 is its eye-popping price. It lists for a stunning $6,399, with a street price of $4,000. Now it’s one thing for military units to ...

Forecasters say that the polar vortex will usher in waves of frigid air across parts of the U.S. through January. The “more active polar vortex will drive colder air and snow across the central and ...

A massive winter storm is about to hit much of the United States, bringing snow, sleet, icy rain, and exceptionally low temperatures. Here’s how to protect yourself, especially if you have a medical ...