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 ... Plains and Mississippi Valley, and the East Coast ...
Anytime we get an Arctic air blast down this far south, this is an artifact of the polar vortex rearing its ugly head,” said climatologist Barry Keim .
Some results have been hidden because they may be inaccessible to you