According to the latest data compiled by PowerOutage.us, more than 1 million people in more than 20 US states lost electricity as a winter storm swept from the plains to the East Coast.
North Carolina tops the list with 165,654 electricity customers, whose electricity was cut off as of 10:30 Eastern time.
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Eleven other states have more than 50,000 reported outages at 10:30 a.m. ET. Three of these states border the Great Lakes: New York, Ohio, Pennsylvania. The National Weather Service said Lakes Effect snowfall could be expected for preferred leeward locations Saturday, as there are very cold arctic air currents across the region.
Four other states with more than 50,000 blackouts are in New England: Connecticut, Massachusetts, New Hampshire, and Vermont. Others are Georgia, South Carolina, Texas and Virginia.
Widespread record low maximum temperatures are possible on Friday, stretching from the Lower Mississippi Valley to the northeast into the Tennessee and Ohio Valleys and southeast to large parts of the east, South to the Central Appalachians and the Mid-Atlantic.
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According to flight tracking site FlightAware, as of 10:30 a.m. ET on Friday, more than 2,600 US flights were delayed, while more than 3,600 were cancelled.
More than 10,028 flights across the US on Thursday were delayed and about 2,539 flights were cancelled.
Airlines are now proactively issuing waivers to assist passengers whose flights have been canceled during a certain period of the holiday.
HOLIDAY FLIGHT CANCELLATIONS: LEARN YOUR AIRLINES POLICIES AND BEST OPTIONS