Three factors are combining to increase the likelihood of a weaker polar vortex this winter, the website reports. And a ...

On Monday, the polar vortex will reach the Deep South, with temperatures down to the freezing point of 32 degrees Fahrenheit in Atlanta. Wind chills will be in the 20s.

During the 2014 January polar vortex, more than 20 people across the country died from the cold as places like Georgia — which rarely see serious cold — dealt with lows under 10 degrees ...

The polar vortex spins anticlockwise around the North Pole with wind speeds of about 155mph (250km/h). There are two types of polar vortexes – tropospheric and stratospheric.

- The polar vortex doesn't always mean snow: Temperatures on the ground still have to be cold enough for snow production. If the atmosphere is too dry or too warm, you'll miss out on the snow.

A polar vortex is set to bring weeks of icy temperatures to the Lower Hudson Valley and New York City. “This could end up being the coldest January since 2011 for the U.S. as a whole,” said ...

A new study challenges the idea that climate change is behind the erratic wintertime behavior of the polar jet stream, the ...