The polar vortex is a gigantic circular upper-air weather pattern in the Arctic that envelops the North Pole. It's a normal ...

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 ...

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

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.

While Winter Storm Blair and the polar vortex are not the same, they are expected to overlap, potentially intensifying and causing more extreme conditions, particularly ice and sleet. Per the NWS ...

The polar vortex is a gigantic circular upper-air weather pattern in the Arctic that envelops the North Pole. It's a normal pattern that is stronger in the winter and tends to keep the coldest ...

The polar vortex has plunged much of the US into freezing conditions, causing widespread chaos. Heavy snow, ice, and wind led to road closures, power outages, and flight cancellations. At least ...

The vortex is located in the stratosphere, the layer above the troposphere (the troposphere is where we live and most weather occurs). In the winter, the polar vortex helps keep frigid ...

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