Polar vortex maps show where arctic blast is set to freeze the U.S. as far as the Deep South
A polar vortex dipping down from Siberia will bring a cold front with frigid temperatures to nearly 300 million Americans.
Winter storm plods into the Deep South, prompting states of emergency and school closures
Another blast of winter storms is closing schools, snarling flights and putting millions of residents on alert across parts of the Deep South and south-central U.S. The National Weather Service says ...