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(CNN) -- A major winter storm whipped the Upper Midwest early Monday, just after a historic snowfall buried much of the Northeast.
The latest blizzard dumped 8 to 15 inches of snow across parts of seven states but saved most of its fury for the Dakotas and Minnesota, the National Weather Service said. Snow showers and blowing snow were expected to linger Monday across the area.
More than 1,000 miles away, residents of the Northeast spent the weekend digging out from a storm that dumped several feet of snow across the region.
Sean McCullough, left, plays with his children in Copley Square in Boston on Sunday, February 10, following a powerful blizzard. The storm dumped more than two feet of snow in parts of New England.
Photos: Northeast blizzard
Blizzard bombards Northeast
Girl gets super excited about snow
Streets left to skiers in Boston snow
In the Southeast, at least 15 tornadoes formed across southern Mississippi and Alabama on Sunday afternoon as a cold front moved in. Major damage was caused by a tornado that struck Hattiesburg, Mississippi. The Mobile, Alabama, National Weather Service Office was to begin conducting damage surveys Monday.
According to Storm Prediction Center reports, nearly 70 people were injured in Sunday's storms, with at least 61 of those in Hattiesburg.
North begins recovery
In the Northeast, the heavy snow that fell over the weekend was still causing problems Monday. Scott Devico, a spokesman for the Connecticut Department of Emergency Management, said Monday the roofs of 16 homes and buildings had collapsed because of the weight of the snow piled atop them.
The storm's toll rose to 11 when a man and woman were found dead in a car in Meriden, apparently due to carbon monoxide poisoning, Devico said. Five of the nine other fatalities were in Connecticut, along with one in New York, one in Massachusetts and two in the Canadian province of Ontario.
In Bridgeport, Connecticut, Mayor Bill Finch said the city had gotten some 30 inches of snow. As of Monday morning, 10% to 20% of it had been plowed, with the city's main roads expected to be cleared by Tuesday morning, secondary roads by Thursday and Friday, and residential streets by Sunday, he said.
Bridgeport is no special case. "I've talked to other mayors; we're all buried," he said.
National Guard soldiers were helping pick up emergency-center workers and retrieve operators for pay loaders, he said.
Abandoned cars were making the task difficult. "The plows can't get through; pay loaders have to work surgically to try and remove these cars and get the streets cleared," Finch said.
On Sunday night, he said, only two tow trucks were available to the city; the rest were snowed in. By Monday, six tow trucks were operating, he said.
Alternative forms of transportation weren't much better. "It took me 40 minutes to walk four blocks from my house to the Emergency Operations Center," he said.
About 200 people were in shelters Sunday in southeastern Connecticut, Gov. Dannel Malloy said. More than that number found refuge in schools on the South Shore of Massachusetts, where dozens of National Guard soldiers were helping local authorities and residents deal with flooding and storm damage.
The Boston Globe reported that recovery efforts were in motion, and the Massachusetts Emergency Management Agency dispatched eight rapid assessment teams to look at conditions in coastal communities. The paper reported that thousands of National Guard soldiers were assisting.
"The devastation we have seen here would lead one to believe that it'll be days before we get power back," said Jim Cantwell, a state representative for the Massachusetts towns of Marshfield and Scituate, where about 90% of customers were without power late Sunday.
In Massachusetts, about 113,000 customers were still without power Monday afternoon, with the greatest concentration of outages in the southeastern and Cape regions, said Gov. Deval Patrick. "I think the utility companies have made great progress, but they need to keep making great progress," he told reporters.
He pleaded with residents using generators to ensure they are properly vented. Officials have received reports of people being overcome with carbon monoxide, "a deadly and silent killer," he said.
Amtrak announced that it would resume normal operations between New York and Boston beginning Tuesday. "Amtrak crews have been working around the clock to clear affected track of large amounts of snow, in excess of several fee in some cases," the rail line said in a statement.
South takes hit
Storms were only one aspect of the extreme weather across the Southeast as heavy rain soaked much of the region. Rain around the slow-moving cold front prompted flood watches and warnings from southeastern Louisiana to central Georgia through Tuesday afternoon.
Those states could get 3 to 5 inches of rain, CNN meteorologists said.
The Southeast and Gulf Coast may see severe storms Monday, with heavy rainfall and gusty winds, the Storm Prediction Center said.
Warmer weather
Daytime temperatures were expected to climb Monday into the 40s in much of southern Connecticut, Rhode Island and Massachusetts, where rain may fall as well.
That would help melt snow, though it could make what's there heavier and increase the risk of roof collapses. There were reports Sunday of a barn, a sports facility, commercial buildings and other buildings suffering cave-ins, Malloy said.
Freezing rain will change to rain as temperatures warm in the Northeast on Monday. But overnight lows will dip below freezing, causing melted snow to refreeze on roads.
A weak system will move through the area on Wednesday and will drop dustings of snow across the area, but the system should clear out by Thursday morning.
The mix made for a messy Monday morning commute into cities such as Boston, though schools remained closed there and in many other locales as the snow clean-up effort continued.
Flights resumed Sunday at Boston's Logan Airport and Amtrak restored limited service.
"We're working as hard as we can," Rhode Island Gov. Lincoln Chaffee said of efforts in his state. "We're seeing efforts every hour."
Lots and lots of snow
The blizzard that began burying the Northeast on Friday was historic by many measures -- most of all, by the amount of snow that fell.
In Hamden, Connecticut, for instance, 40 inches of snow made it difficult for plows to get on the roads. CNN iReporter Mia Orsatti said streets there had transformed into "white, wide, soft blanket(s) of snow."
Tornado strikes in the Deep South
Lesser depths still led to major headaches, especially when combined with hurricane-force wind gusts, storm surges and snow drifts.
"There's a ton of snow, and there's nowhere to put it," said Lena Berc of Boston, where 24.9 inches fell. "So it's really frustrating to find nooks and crannies."
Many still without power
About 270,000 utility customers were in the dark late Sunday, down from 635,000 a day earlier.
The outages were the result of a combination of whipping winds and power lines sagging, and sometimes snapping, under the weight of wet snow and ice.
"There was a phenomenal amount of trees that went down," Cantwell said, noting that no Scituate residents had power Sunday morning and estimating it may be Thursday before all the lights are back on.
For all the headaches in New England, however, many people were enjoying the wintry conditions.
iReporter Filipe Pereira said students at Wentworth Institute of Technology in Boston, who were set to return to class Monday, had enjoyed the weekend storm, engaging in massive snowball fights and building snowmen everywhere. People were even skiing down one street, he said. Students earlier took a series of photographs tracking the storm over 26 hours.
The streets around the small school were still a mess, but they were no longer closed.
"People have been going all over the roads with no problem," Pereira said.
CNN's Dave Alsup, Laur Ly, Sean C. Morris, Mary Snow, Brian Rokus and AnneClaire Stapleton contributed to this report.
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A man walks by a storefront behind large snowdrifts on Boylston Street in Boston on February 10.
A woman walks past a man clearing snow from a sidewalk on February 10 in Boston.
A man walks past snow banks in the Back Bay neighborhood on February 10 in Boston.
Snowmen made from backstage lamps, paper rolls and water bottle caps stand outside the rest area during Fashion Week in New York on February 10.
Snow blankets Copley Square on Saturday, February 9, in Boston.
People walk and sled through a snowy Prospect Park in Brooklyn, New York, on Saturday.
People attempt to push a stuck vehicle in the Back Bay neighborhood of Boston on Saturday.
A boy pulls a sled through a snowy Prospect Park in Brooklyn on Saturday.
A boy snowboards in Boston Common on Saturday.
People play in the snow in New York's Central Park on Saturday.
A young woman jumps down from snow piled in front of the Massachusetts State House after posing for a photo in Boston on Saturday.
A man walks along a snow-covered trail in Central Park on Saturday.
A child tubes down snow-covered stairs in Central Park on Saturday.
Emmet's on Beacon Street is covered in snow in Boston on Saturday.
A front loader and truck drive down Warren Street in the Brighton neighborhood on Saturday in Boston.
People walk along the Brooklyn Bridge following a major winter storm on Saturday in New York City. Possible record-setting blizzard conditions are expected with heavy snow warnings in effect from New Jersey through southern Maine.
The sculpture "Double Check" by John Seward Johnson II is seen in Zuccotti Park following a major winter storm on Saturday in New York City on Saturday.
People walk along a street devoid of snow due to ocean flooding Saturday in Winthrop, Massachusetts. Coastal flooding is expected as the storm lingers into the day.
A person walks through the snow in an alley in Hoboken, New Jersey, on Saturday.
Children carry a sled through the Financial District in New York City on Saturday.
Saniyyah Phillips, 8, scrapes the snow off of the top of her father's car in the Brighton neighborhood of Boston on Friday.
Snow covers a sidewalk and building awning in Boston on Saturday.
Josephine Sipayung and her son Eric, 6, sled down an empty street past snow-covered vehicles in Boston on Saturday.
Snow-covered vehicles sit on Commonwealth Avenue in the Brighton neighborhood of Boston on Saturday.
A worker carries a snow shovel across the Ground Zero construction sight on Saturday in New York.
A woman walks through the snow as a worker clears snow from a sidewalk in the Back Bay neighborhood of Boston.
Snow gathers on shoes hung from power lines in the Lower East Side of New York City.
Mary Leahy shovels her sidewalk in Medford, Massachusetts.
Paul DeCarlo uses a snow blower to clear the walk in front of his house in Greenfield, Massachusetts.
A man walks through snowy Central Park in New York.
Mike Streeter shovels snow in his front yard as ocean water crashes over the sea wall just feet away on February 9 in Winthrop, Massachusetts.
A pair of cows feed in the snow at Eden Pond Farm in Leyden, Massachusetts.
A child drags his toboggan up a hill in Central Park.
A woman walks in Boston on Saturday.
Phoebe Lightburn, 9, makes a snow angel in Central Park in New York.
A man shovels snow along Winthrop Shore Drive in Winthrop, Massachusetts.
A cyclist rides through the snow in the Back Bay neighborhood of Boston.
Snow blankets Boston on February 9.
Pedestrians shield themselves from blowing snow as a blizzard arrives in the Back Bay neighborhood of Boston on Friday, February 8.
Two women look for a taxi in snow-covered Times Square on February 8.
A food vendor stands under his cart as snow falls in Times Square.
A man shovels snow in front of the Apple store in New York on February 8.
People wait for a taxi in the snow in Times Square.
A pedestrian makes his way through driving snow with a broken umbrella in the Back Bay neighborhood on Friday, February 8 in Boston.
A fashion week attendee makes her way through the snow in high-heeled shoes on Friday.
Snow is cleared in front of Boston Public Library on Friday.
New York City residents cross a street covered in slush on Friday during a storm affecting the Northeast on Friday.
A woman walks through the snow past Copley Square on Friday in Boston. Massachusetts and other states from New York to Maine are preparing for a major blizzard with possible record amounts of snowfall in some areas.
A snowplow sits on the street while snow falls near Boston Common on Friday.
People walk through Times Square as a major winter storm moves in on Friday.
A snowman sits on the duck pond in the Boston Common.
A woman hails a taxi as snow and freezing rain fall over Midtown Manhattan as the city braced for the major storm on Friday.
A man operates a snow blower in the Back Bay neighborhood on Friday in Boston.
Memorial Drive sits empty following a driving ban and state of emergency that was issued in Boston on Friday.
Pedestrians battle wind, snow and sleet in Manhattan on Friday.
People walk through the snow in Boston's Back Bay neighborhood on Friday.
Bicyclists wait at a light in wind, snow and sleet on Friday.
This umbrella doesn't stand a chance in the wind-driven snow Friday in Boston as a potentially historic winter storm closes in on the Northeast, especially New England.
Jeannine Strampel walks through the snow past a statue of Alexander Hamilton along Commonwealth Avenue Mall on February 8.
Jerry Trebino loads sand onto the back of a snowplow February 8 in Wrentham, Massachusetts. The storm is expected to spawn travel headaches for a large swath of the region.
A woman battles her way to the subway in Boston on February 8.
Skiing seems like a good idea as snow begins to fall in Boston on February 8.
A woman struggles with her umbrella in New York's Financial District on February 8. Accumulations of up to a foot of snow are expected in the Big Apple.
Ines Cuadrado, left, and Anne Levine trek along a snow-covered road in Middlefield, Connecticut, on February 8.
Alfie Times shovels snow from the sidewalk outside the XL Center in Hartford, Connecticut, on February 8.
Ricky Varona copes with the wind and precipitation February 8 in New York.
Tourists brave the high winds in New York's Financial District on February 8.
A sweeper clears snow in front of the Mercedes-Benz Fashion Week tents on February 8 at Lincoln Center in New York.
A man walks along the promenade in Brooklyn Heights as Lower Manhattan stands in a cloud of snow and sleet in the early hours of a major winter storm on February 8.
A man walks across the Brooklyn Bridge in the snow and sleet on February 8.
Cars are lined up outside a gas station in Queens borough of New York on February 8.
A sign bears bad news on a fuel pump in Manhasset, New York, on February 8.
A woman tries to shield herself from wind and precipitation as the beginnings of a large winter storm hits the New York area on February 8.
Snow falls over Lower Manhattan in the early hours of a major winter storm on February 8.
A woman tries to right her umbrella while dealing with wind and precipitation in New York on February 8.
Two people carefully walk across the Brooklyn Bridge in the snow and sleet on February 8.
A satellite image released by the National Oceanic & Atmospheric Administration on February 8, shows a large storm over the Northeastern United States.
People walk through the blowing snow while a blizzard arrives in the Back Bay neighborhood on February 8 in Boston.
A man operates a snowblower while a blizzard arrives in the Back Bay neighborhood in Boston on February 8.
A sign warns drivers along Interstate 495 of a blizzard watch in Franklin, Massachusetts, on Thursday, February 7.
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