Winter storm impacts much of East Coast, thousands of flights canceled: LIVE UPDATES

(Fox News)More than a foot of snow is expected to fall Monday in parts of the Northeast.As of 7:20 a.m. ET, dozens of counties stretching from South Carolina to Maine remain under winter weather warnings and advisories.The village of Flat Rock, N.C., received more than 15 inches of snow in the winter storm, according to the National Weather Service.A powerful winter storm that brought record breaking snow and ice to the south, tornadoes in Florida, hundreds of thousands of power outages and hurricane force winds along the coast is still cranked up and bringing many weather hazards for the Northeast and New England. No additional snowfall is expected," the NWS wrote.More than a thousand flights were cancelled Monday as the winter storm moves across the eastern U.S.As of 3:00 a.m., more than 1,200 flights have been cancelled, including 207 at Charlotte Douglas International Airport in North Carolina, according to FlightAware.Meanwhile, at least 78 flights were cancelled thus far at Ronald Reagan Washington National Airport, in Arlington, Virginia.Hundreds of thousands of people were without power early Monday as the winter storm continued to impact the East Coast.As of Monday morning, more than 60,000 people are without power in North and South Carolina, according to the website PowerOutage.us.Georgia had more than 27,000 customers without power while Pennsylvania had at least 25,000.The National Weather Service Weather Prediction Center released its key messages for the storm on Sunday."Impacts will be felt across 20 or more states from the eastern Tennessee Valley into the Carolina Piedmont, then northward across the Appalachians, Mid Atlantic, and Northeast," according to the National Weather Service (NWS).Fox Weather graphicThe weekend's winter storm that dropped over a foot of snow across the South and Mid-Atlantic states is charging north up the eastern seaboard.