More than a dozen states sound the alarm, declaring emergencies or urging people to stay home.
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More than 8,000 flights set to take off over the weekend have been cancelled as a major storm bears down across the United States, threatening widespread heavy snow and a band of catastrophic ice stretching from east Texas to North Carolina.
At least 3,400 flights were delayed or cancelled on Saturday, according to the flight tracking website FlightAware, and more than 5,000 were called off for Sunday.
