Colorado will see its coldest temperatures of the winter as a mass of cold air descends on the state from the Artic. But despite the bitter cold, this weather event is not a polarvortex.
A dangerous and potentially life-threatening stretch of cold weather has much of the U.S. on alert as a lobe of the polarvortex invades the nation and sends temperatures tumbling to levels not ...
The polar vortex can be a powerful source of winter weather, but it's not the only cause of severe cold and snow in regions better known for warmth and sunshine. The Gulf Coast states are still ...
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