About 300,000 without power in U.S. southeast after storm

ATLANTA, Dec 10 (Reuters) - About 300,000 people in the U.S. southeast were without power on Monday and hundreds of flights were canceled after a storm dumped 20 inches of snow and left one motorist dead.

The storm headed out to sea but the region will stay cold this week, the National Weather Service's (NWS) Weather Prediction Center said.

"This remains a dangerous system even as it moves off the coast," said lead NWS forecaster Michael Schichtel. "It's slow to move off the Carolinas but a saving grace is that it won't hit New England."

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Winter storm blasts U.S. Southeast leaving hundreds of thousands without power
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Winter storm blasts U.S. Southeast leaving hundreds of thousands without power
A snow-covered car is parked outside a home in Greensboro, N.C., Sunday, Dec. 9, 2018. A massive storm brought snow, sleet, and freezing rain across a wide swath of the South on Sunday - causing dangerously icy roads, immobilizing snowfalls and power losses. (AP Photo/Chuck Burton)
A man jogs with his dog down a snow-covered street in Greensboro, N.C., Sunday, Dec. 9, 2018. A massive storm brought snow, sleet, and freezing rain across a wide swath of the South on Sunday - causing dangerously icy roads, immobilizing snowfalls and power losses. (AP Photo/Chuck Burton)
Joslyn Fontanella, 8, takes a break from shoveling a walkway to taste some snow in Greensboro, N.C., Sunday, Dec. 9, 2018. A massive storm brought snow, sleet, and freezing rain across a wide swath of the South on Sunday, causing dangerously icy roads, immobilizing snowfalls and power losses to hundreds of thousands of people.(AP Photo/Chuck Burton)
A driver in a small car follows three snow plows down a major road in Greensboro, N.C., Sunday, Dec. 9, 2018. A massive storm brought snow, sleet, and freezing rain across a wide swath of the South on Sunday - causing dangerously icy roads, immobilizing snowfalls and power losses to hundreds of thousands of people.(AP Photo/Chuck Burton)
Cars move slowly on a snowy Durham, N.C., street after several inches fell on Sunday Dec. 9, 2018. A storm spreading snow, sleet and freezing rain across a wide swath of the South has millions of people in its path, raising the threat of immobilizing snowfalls, icy roads and possible power outages. (AP Photo/Jonathan Drew)
A snow plow moves on a snowy Durham, N.C., street after several inches fell on Sunday Dec. 9, 2018. A storm spreading snow, sleet and freezing rain across a wide swath of the South has millions of people in its path, raising the threat of immobilizing snowfalls, icy roads and possible power outages. (AP Photo/Jonathan Drew)
A Duke Energy crew works to restore power in Raleigh, N.C,. as snow continues to fall Sunday morning, Dec. 9, 2018. A storm spreading snow, sleet and freezing rain across a wide swath of the South has millions of people in its path, raising the threat of immobilizing snowfalls, icy roads and power outages. (Travis Long/The News & Observer via AP)
A couple shovels their driveway in Greensboro, N.C., Sunday, Dec. 9, 2018. A massive storm brought snow, sleet, and freezing rain across a wide swath of the South on Sunday - causing dangerously icy roads, immobilizing snowfalls and power losses to hundreds of thousands of people.(AP Photo/Chuck Burton)
SANTA ANA, CA - DECEMBER 06: A woman jumps over flowing water along East Santa Clara Avenue in Santa Ana as heavy rainfall fell throughout Orange County on Thursday, December 6, 2018. Heavy rain from a winter storm passing through Southern California flooded streets. (Photo by Mark Rightmire/Digital First Media/Orange County Register via Getty Images)
SANTA ANA, CA - DECEMBER 06: A curious onlooker watches a flash flood waters from heavy rainfall rushes through Hart Park in Orange on Thursday, December 6, 2018. Heavy rain from a winter storm passing through Southern California flooded streets. (Photo by Mark Rightmire/Digital First Media/Orange County Register via Getty Images)
COSTA MESA, CA - DECEMBER 06: Joe Suzuki paddles around submerged cars on Pomona Avenue near 17th Street in Costa Mesa, CA, on Thursday, Dec 6, 2018. Heavy rain from a winter storm passing through Southern California flooded streets. (Photo by Jeff Gritchen/Digital First Media/Orange County Register via Getty Images)
GARDEN GROVE, CA - DECEMBER 06: A women rides her bicycle on the sidewalk of Downie Place near Fairview Street in Garden Grove, CA, on Thursday, Dec 6, 2018. Heavy rain from a winter storm passing through Southern California flooded streets. (Photo by Jeff Gritchen/Digital First Media/Orange County Register via Getty Images)
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One motorist died outside Charlotte, North Carolina, on Sunday, and divers searched for a driver whose 18-wheeler was found in a river in Kinston, North Carolina, a NBC affiliate in Raleigh reported.

Motorists in north Georgia, the Carolinas and Virginia can expect snow and ice on Monday.

More than 300,000 customers were without power in the Carolinas, Tennessee and Virginia, Poweroutage.us reported.

The storm prompted more than 1,000 flight cancellations at Charlotte/Douglas International Airport, the sixth-busiest airport in the country, and other airports across the region, according to flight-tracking website FlightAware, early Monday.

North Carolina Governor Roy Cooper said on Sunday a state of emergency would remain in effect and the North Carolina National Guard had been activated to help with the response.

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