Apolar 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 Service ...

A polar vortex could bring the coldest January the U.S. has faced in years. National Weather Service experts told Newsweek that Americans can expect a colder-than-average start to the new year.

During the winter, in the northern hemisphere, the polar vortex will expand and send cold air southward, according to the U.S. National Weather Service.

As clarified by the National Weather Service, the term “vortex” refers to the counter-clockwise flow of winds that bottle up the arctic air and keep it near the poles.

According to the National Weather Service office in Fort Worth, areas north and northwest of the Dallas-Forth Worth area have the greatest chances of seeing more than 0.1 inches of snow. DC ...

The National Weather Service issued winter storm warnings for Kansas and Missouri, where blizzard conditions brought wind gusts of up to 45 mph (72 kph). The warnings extended to New Jersey into ...

Disrupted polar vortex- cold-snap of air moves south, milder air moves north When the weakened polar vortex interacts with moist air in the mid-latitudes, it can lead to wintry weather.

The National Weather Service said temperatures have plummeted across the Rockies, Plains and Mississippi Valley, and the East Coast is now feeling the freeze as the new workweek begins. President ...

If you have seen an image circulating on Facebook showing an incoming polar vortex expected at the end of January and are worried about severe winter weather, you don't have to worry too much just ...

The polar vortex refers to the large area of low pressure and cold air surrounding both of the Earth’s poles, according to the National Weather Service. It always exists near the poles, but ...

Chicagoans are no strangers to cold weather, but some of the terminology used to describe frigid conditions can be confusing. That’s why experts from the National Weather Service’s Chic… ...