Fueled by a disturbed polar vortex, 18 states and D.C. have had more snow than average into December. In some areas, snowfall ...
A long-awaited blast of cold air, courtesy of the polar vortex, will overtake much of the US, but the forecast says the low temperatures won't last.
The Polar vortex is causing temperatures to plummet dangerously across the Philadelphia region, and frostbite could become a ...
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