With the bitter cold of winter descending upon the U.S., one may question what is responsible for this upcoming period of below-average temperatures. In short, the answer is the polar vortex. But what ...

A polar vortex is set to bring weeks of icy temperatures to the Lower Hudson Valley and New York City. The frigid period will impact the Northeast and Midwestern regions of the United States starting ...

With Monday’s snowfall still piled high on lawns and driveways, much of the Mid-Atlantic looks like the inside of a freezer. Thanks to the polar vortex, it feels like one, too. The Philadelphia region ...

Like much of the U.S., Wisconsinites woke up Tuesday morning to bitter cold conditions. Many schools and colleges throughout the Milwaukee area closed as the area braced for the dangerous freezing ...