Storm could dump 2 feet of snow on East Coast: Forecasters

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Major Snowstorm Possible For Millions in Eastern U.S.

Forecasters warned Wednesday of a major developing snowstorm that could dump snow, ice and treacherous conditions on every large Northeast city.

The Midwest and East Coast already have faced frigid temperatures this week -- and a storm due to start taking shape Thursday promises another wintery wallop for millions that is expected to last through the weekend.

Forecasters warned Wednesday of a major developing snowstorm that could dump snow, ice and treacherous conditions on every large Northeast city.

PHOTOS: Rising snow closed schools, highways in the Northeast last week

17 PHOTOS
NTP: Rising snow closes schools, highways in Northeast
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Storm could dump 2 feet of snow on East Coast: Forecasters
Numerous vehicles rest in a ditch along the shoulder of Interstate 90 after they were involved in a crash that closed the eastbound lanes, Wednesday, Jan. 13, 2016, in Harborcreek Township near Erie, Pa. About 25 vehicles were involved in the weather-related accident, which had multiple lanes of the interstate closed for more than five hours. (Greg Wohlford/Erie Times-News via AP) 
A bicyclist rides through downtown Pittsburgh during a mid-day snow fall, Tuesday, Jan. 12, 2016. (AP Photo/Gene J. Puskar)
A man walks in downtown Pittsburgh during a mid-day snow fall, Tuesday, Jan. 12, 2016. (AP Photo/Gene J. Puskar)
Snow covers vehicles in a parking lot in downtown Pittsburgh during a mid-day snowfall,Tuesday, Jan. 12, 2016. (AP Photo/Gene J. Puskar)
A bicyclist rides through the streets of downtown Pittsburgh during a mid-day snow fall, Tuesday, Jan. 12, 2016. (AP Photo/Gene J. Puskar)
A flock of pigeons find a resting place on a building during a snow fall in downtown Pittsburgh, Jan. 12, 2016. (AP Photo/Gene J. Puskar)
PORTLAND, ME - JANUARY 13: Dan Marks clears off cars belonging to his neighbors outside his residence on Munjoy Hill in Portland on Wednesday, January 13, 2016, following an overnight storm that left several inches of fresh snow. (Photo by Derek Davis/Portland Press Herald via Getty Images)
PORTLAND, ME - JANUARY 13: Russ Thorgerson of Ken Fengler Landscaping clears a sidewalk on Cumberland Avenue on Wednesday, January 13, 2016, after an overnight storm left several inches of fresh snow. (Photo by Derek Davis/Portland Press Herald via Getty Images)
PORTLAND, ME - JANUARY 13: Harrison Rice clears the sidewalk in front of his Portland residence on Wednesday, January 13, 2016, after an overnight storm left several inches of fresh snow. (Photo by Derek Davis/Portland Press Herald via Getty Images)
PORTLAND, ME - JANUARY 12: A person rides their bike down Free Street as snow begins to fall in Portland, ME on Tuesday, January 12, 2016. (Photo by Whitney Hayward/Portland Press Herald via Getty Images)
PORTLAND, ME - JANUARY 12: A pedestrian crosses Spring Street as snow billows in the background in Portland, ME on Tuesday, January 12, 2016. (Photo by Whitney Hayward/Portland Press Herald via Getty Images)
PORTLAND, ME - JANUARY 12: A pedestrian walks in Monument Square as snow falls in Portland, ME on Tuesday, January 12, 2016. (Photo by Whitney Hayward/Portland Press Herald via Getty Images)
PORTLAND, ME - JANUARY 12: Cars make their way down Congress Street as snow falls in Portland, ME on Tuesday, January 12, 2016. (Photo by Whitney Hayward/Portland Press Herald via Getty Images)
PORTLAND, ME - JANUARY 12: A pedestrian crosses Free Street as snow falls in Portland, ME on Tuesday, January 12, 2016. (Photo by Whitney Hayward/Portland Press Herald via Getty Images)
PORTLAND, ME - JANUARY 12: A pedestrian crosses Congress Street as snow begins to fall in Portland, ME on Tuesday, January 12, 2016. (Photo by Whitney Hayward/Portland Press Herald via Getty Images)
Wind-whipped snow creates patterns on a hillside as a jogger braves gusts of up to 40 miles-per-hour, Wednesday, Jan. 13, 2016, in Portland, Maine. A snow storm that started late Tuesday dumped up to 10 inches of snow on parts of southern Maine. (AP Photo/Robert F. Bukaty)
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The National Weather Service warned that between 1 and 2 feet of snow could fall in the Northeast, with coastal flooding also likely.

The storm could produce a "prolific" amount of snow that affects millions across the eastern part of the U.S., according to The Weather Channel.

While the track of the storm was still not immediately clear, snow is expected to start in the central plains on Thursday then move into the northeast corridor with over a foot of snow possible in some places, The Weather Channel said.

It said "some or all" of the largest cities in the Northeast -- from New York to Washington -- would be "significantly impacted," with snow and winds which could bring traffic to a "grinding halt" between Friday and Sunday.

The National Weather Service warned the central Appalachians could get at least 12 inches of powder.

New York City Mayor Bill de Blasio said officials were keeping an eye on the storm but didn't expect the need for drastic measures.

"(This is) not the sort of storm that would shut down train service," he said according to NBC New York.

Connecticut residents were making preparations for a heavy hit, with local hardware stores doing brisk business in shovels, batteries and flashlights.

"We've been very busy all day, very busy selling any storm related items," the manager of Cheshire's R.W. Hine Hardware store, Tom Gaetani, told NBC Connecticut.

See more photos of how the U.S. has faired so far this winter:

21 PHOTOS
Snow, winter weather 2015-2016 season across the U.S.
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Storm could dump 2 feet of snow on East Coast: Forecasters
LUBBOCK, TEXAS - DECEMBER 27: A highway worker tries to shield himself while walking to his truck on December 27, 2015 in Lubbock, Texas. Coming on the heels of several strong tornadoes, some northern parts of Texas are experiencing blizzard conditions with wind gusts up to 50 mph and as much as 13 inches of snow forecast. (Photo by John Weast/Getty Images)
NEDERLAND, CO - DECEMBER 15: Steve Hauser plows snow in the Caribou Shopping Center in Nederland, Colorado on December 15, 2015. Snow is expected to continue throughout the day. (Photo by Helen H. Richardson/The Denver Post via Getty Images)
NEDERLAND, CO - DECEMBER 15: A yellow lab waits patiently in his owner's snowy old truck along East 1st Street in Nederland, Colorado on December 15, 2015. Snow is expected to continue throughout the day. The dog looked warm and didn't wait long in the car as his owner returned shortly after an errand in the town. (Photo by Helen H. Richardson/The Denver Post via Getty Images)
DENVER, CO - DEC. 15: Anna Renton, 7, right, relaxes while neighbor Graham Langner, 7, has a snow fight with his nanny, Ashely Kish.The Denver metro area received more snow than expected overnight, closing schools across the city with some areas measuring a foot of snow by the early morning. (Photo by Kathryn Scott Osler/The Denver Post via Getty Images)
LAKEWOOD, CO - DECEMBER 15: Crut Liles clears snow from his walkways outside his home in Lakewood, December, 15, 2015. Many schools in the area are closed due to the snow storm. (Photo by RJ Sangosti/The Denver Post via Getty Images)
DENVER, CO - DEC. 15: A CDOT crew runs their plow truck southbound on Colorado Blvd. near E. 13th Ave. in Denver. The Denver metro area received more snow than expected overnight, closing schools across the city with some areas measuring a foot of snow by the early morning. (Photo by Kathryn Scott Osler/The Denver Post via Getty Images)
Al Frelk walks his dog, Shiba, 10, in Lords Park in Elgin, Ill., on Saturday, Nov. 21, 2015. Asked about the snow, Frelk said, 'It's beautiful, but can be tough to drive in. Though Shiba has been waiting 9 months for this.' The first winter storm of the season dropped more than 10 inches of snow at numerous Chicagoland locations. (Stacey Wescott/Chicago Tribune/TNS via Getty Images)
DENVER, CO - NOVEMBER 17: Snow hit the Denver metro area having an impact on air travel at Denver International Airport. They were clearing out from the snow on Tuesday, November 17, 2015. Raul Hernandez shovels snow in the economy lot. Hernandez and his crew had worked all night to clear snow. (Photo by Cyrus McCrimmon/The Denver Post via Getty Images)
LAKEWOOD, CO - NOVEMBER 11: Brandon Nelli, a student at Colorado Christian University in Lakewood, shovels snow during a Veteran's Day snow storm the moved into the area overnight, November, 11, 2015. Lakewood got almost 3 inches in some areas form the storm. (Photo by RJ Sangosti/The Denver Post via Getty Images)
DENVER, CO - NOVEMBER 11: A blanket of white snow covers Fort Logan National Cemetery during a Veteran's Day snow storm the moved into the area overnight, November, 11, 2015. (Photo by RJ Sangosti/The Denver Post via Getty Images)
MONUMENT, CO. - November 17: Bob Swift clearing his driveway of a deep drift of snow in Monument, CO. November 17, 2015 Monument, CO (Photo By Joe Amon/The Denver Post via Getty Images)
An above-average amount of snow covers a small cabin near where the first snow survey of winter conducted by the California Department of Water Resources in Phillips, California December 30, 2015. REUTERS/Fred Greaves
Cameron Shonnard backflips a jump at Squaw Valley in Olympic Valley, California, December 5, 2015. An El Nino is forecasted for California, and regular precipitation has been welcomed after years of drought. REUTERS/Max Whittaker TPX IMAGES OF THE DAY
Fresh snow clings to trees near Big Bend, California, December 4, 2015. An El Nino is forecasted for California, and regular precipitation has been welcomed after years of drought. Picture taken December 4. REUTERS/Max Whittaker
The U.S. Capitol dome can be seen behind piles of snow removed from parking areas and walkways around the Capitol grounds in Washington January 26, 2016. The snowbound Washington area was resuming partial business on Tuesday as trains and buses restarted near-normal service, while federal offices remained closed following a massive blizzard that hammered the U.S. East Coast. REUTERS/Jonathan Ernst TPX IMAGES OF THE DAY
Floodwaters cover Green Avenue after a winter storm in Manasquan, New Jersey, January 24, 2016. A morning high tide surge of 2 feet followed snowfall of about 2 feet in the first major storm of the season. REUTERS/Dominick Reuter
A couple poses for a photo on a snow pile during a snow storm in Times Square in the Manhattan borough of New York, January 23, 2016. REUTERS/Carlo Allegri TPX IMAGES OF THE DAY
WASHINGTON, DISTRICT OF COLUMBIA, UNITED STATES - 2016/02/15: Snow is once again falling across Washington, D.C on Monday, 15 February 2016. The bitter cold was replaced by snow, sleet and rain Monday in the mid-Atlantic states and the South, but many residents were able to hunker down at home with federal offices and many businesses closed for Washington's Birthday. (Photo by Probal Rashid/LightRocket via Getty Images)
A barn painted with the U.S. flag is seen in the snow covered field in Kanawha, Iowa, United States, January 16, 2016. Iowa will be the first state to hold its primary, with both Democratic and Republican events being held February 1, 2016. Picture taken January 16, 2016. REUTERS/Jim Young
Police officers gather outside the Montgomery County Courthouse, where actor and comedian Bill Cosby will arrive for a preliminary hearing on sexual assault charges, in Norristown, Pennsylvania February 2, 2016. Cosby has been charged with the 2004 sexual assault of Andrea Constand, a former women's basketball team manager at Temple University in Philadelphia, Cosby's alma mater. REUTERS/Mark Makela REUTERS/Mark Makela
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