A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to ...

Americans were bracing Thursday for frigid temperatures that forecasters said could produce life-threatening conditions, with ...

The United States has been experiencing severe winter storms ... to as low as -50C (-60F), is caused by the expansion of the polar vortex – an area of extremely cold, rotating air around ...

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 ...

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 ...

With the Northern Hemisphere well into the winter months, it may seem like temperatures are cold enough already. However, a deep freeze, thanks to the polar vortex dipping down from Siberia ...

It's going to get cold in Tennessee. Meteorologists predict freezing temperatures for much of the state. Here's the latest.

This winter, the snow has not stopped falling ... Waterloo Region is about to get hit with the worst polar vortex seen in Ontario in over a decade, with the Weather Network predicting parts ...

Millions of people across the U.S. will experience subzero or below-average temperatures in the coming days as a polar vortex coming ... summer and strengthens in winter, often expanding and ...

What’s shaping up to be the most expansive polar vortex in over a decade is about ... into the coldest temperatures the country has seen all winter, meteorologists forecast.

The polar vortex is a gigantic, circular area of cold air high up in the atmosphere that usually spins over the north pole. It's a normal pattern that's stronger in the winter and usually tends ...

A dangerous and potentially life-threatening stretch of cold weather has much of the U.s. on alert as a lobe of the polar vortex invades ... s been a somewhat mild winter so far, but things ...