A major winter storm began Saturday in southeastern states, especially North and South Carolina, and is expected to bring unusually heavy snow through Monday. "Snowfall amounts in some locations will likely exceed a foot and result in several days of difficult or impossible travel, extended power outages, and downed trees," the National Weather Service warned. Already more than 200,000 customers in the region have lost power, the bulk of them in North Carolina, and hundreds of flights were grounded Sunday. North Carolina Gov. Roy Cooper (D) urged residents to stay safe indoors.

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