The polar vortex will bring Arctic air directly ... for the NFL playoff game in Philadelphia Sunday afternoon, where low visibility and snow accumulation on the field is likely.
Maps show what to expect as the cold front arrives. The polar vortex is a large area of cold air and low pressure that normally spins over the North and South Poles. During the winter months and ...
The cold air can settled in for days. A polar vortex with low temperatures in the single digits and teens usually only ...
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