In the winter, a disruption in the polar vortex can occur as it tends to expand in the Northern Hemisphere, pushing that cold air farther south, according to the National Weather Service (NWS).

A polar vortex is unleashing extreme winter weather across the United States, affecting millions with dangerous cold, heavy snowfall, and treacherous icy conditions. The US National Weather ...

According to the National Weather Service, a polar vortex will impact most of the country this weekend, here is what you need to know. Hotspots ranked Start the day smarter ☀️ Funniest cap ...

The polar vortex, as explained by the National Weather Service, is a large area of low pressure and cold air that encircles the Earth’s poles. Even though it’s often framed in the media as a weather ...

A polar vortex is descending on the U.S. What does that mean? ... a meteorologist with the National Weather Service's Weather Prediction Center. "Particularly the Rockies, ...

A National Oceanic and Atmospheric Administration graphic shows cold air surging south into the U.S. from the polar vortex above the north pole.

Specifically, the National Weather Service in Cleveland said a couple of inches of snow are possible in northwest Pennsylvania, with an inch or less in northeast Ohio.. Cover your plants! Weather ...

Polar Vortex According to the National Weather Service, a polar vortex “is a large area of low pressure and cold air surrounding both of the Earth’s poles.

The polar vortex is aways around - it just normally stays near the North Pole. But when it descends into our area, get ready for really cold weather.

The windchills during the Polar Vortex in January 2019. The National Weather Service defines a wind chill index as the apparent temperatures which take into account the combined effect of lowering ...

The National Weather Service said the polar vortex always exists near the poles, but weakens in summer and strengthens in winter. The term "vortex" refers to the counter-clockwise flow of air that ...

A phenomenon called the Polar Vortex is responsible for one of the nation's coldest periods in two decades. ... Could be so cold the National Weather Service is calling them life threatening, ...