The event displaced the polar vortex bringing much colder weather to portions of North America. The impact of these ...

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...

A polar vortex is a large, low-pressure system of cold air that typically resides near the Earth’s poles, surrounded by strong westerly winds in the upper atmosphere. "In the northern hemisphere ...

While the record-shattering weather system has moved out of the Midwest, frigid temperatures will likely remain. In the coming days, another blast of cold air is expected to move through the region, ...

In yet another sign that winter weather is either here or will be soon, the dreaded polar vortex is making news yet again. Its potential arrival in the United States over the next few weeks is cause ...

A Polar Vortex brought temperatures so cold in January 2014 that it froze Niagara Falls. Signals of a rare sudden stratospheric warming in the next two weeks have some forecasting an imminent Arctic ...

High above the North Pole, in a slice of atmosphere rarely noticed and even less understood, a transformation is underway. Over the next 10 days, changes in the stratosphere will upend weather ...