It's like "bomb cyclone" or "firenado." It seems like the sort of phenomenon that would be responsible for the ...

The polar vortex's blast of Arctic air from Canada brought the season's coldest weather to the majority of U.S. The vortex is ...

Arctic air surging south ... on warm roads has the potential to melt and then harden into an icy crust. RELATED: Everything you need to know about the polar vortex bringing extreme cold to ...

This blast of cold weather is due to activity of the polar vortex.

When this stratospheric vortex becomes disrupted or stretched, it can distort the jet stream as well, pushing it southward in some areas and causing cold air outbreaks. The Arctic polar vortex is ...

This can cause warmer air from the mid-latitudes to move up to the Arctic Circle, and vice versa, the cooler air from the Arctic Circle can move down to the mid-latitudes. The polar vortex moving into ...

A polar vortex of brutally cold air that normally circles the Arctic will be spilling southward ... cold winds and plummeting temperatures could cause pipes to freeze and burst, possibly affect ...

Denver weather forecast Colorado weather: Front Range feels brunt of arctic cold and snow surge Plunging temps from polar vortex could cause icy metro Denver commute Friday night Denver forecast ...

Most of the country will likely be hit by an arctic blast this weekend into early next week as the polar vortex ushers in cold ... around longer and struggle to melt as a result of the arctic ...

The end of the workweek has spoiled us with snow melt thanks to high temperatures ... A developing area of upper-level arctic cold air will swing into much of the northern and eastern United ...

Friday morning will be a cold and gloomy one but with upper level winds changing westerly and high pressure working in, ...