Polar vortex to send bitter cold to the U.S. including DC area
The polar vortex is a ring of cold air that typically circles the Arctic. A strong jet stream essentially acts like a fence, keeping it locked there. If there's any weakening in the jet stream (the fence), the frigid air can become unstable and spill out. This sends the normally trapped cold air much farther south.
1don MSN
A polar vortex dipping down from Siberia will bring a cold front with frigid temperatures to nearly 300 million Americans.
The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously ...
A polar vortex is slated to sweep most of the continental United States bringing a hazardous freeze to millions of Americans ...
Americans were bracing Thursday for frigid temperatures that forecasters said could produce life-threatening conditions, with ...
Washington, D.C., received heavy snow as President ... The warnings extended to New Jersey into early Tuesday. PHOTOS: Polar vortex keeps much of the US in its icy grip At the storied Calumet ...
Although people from all over the country, of all ages and backgrounds, joined the People's March, one protester said no one ...
Americans face dangerously cold temperatures as a polar vortex brings life-threatening conditions. Nighttime lows may drop to ...
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