National Guard troops check on Buffalo residents on December 28.
Jeffrey T. Barnes/AP
A traveler searches for luggage December 28 at a Southwest Airlines baggage holding area in Denver International Airport. More than 90% of Wednesday's US flight cancellations were Southwest flights, according to flight tracking website FlightAware. Southwest canceled more than 2,500 flights.
Michael Ciaglo/Getty Images
People help push a car out of snow in Buffalo on Tuesday, December 27.
John Normile/Getty Images
Niagara Falls in New York is partially frozen on December 27.
Lokman Vural Elibol/Anadolu Agency/Getty Images
Travelers at Baltimore/Washington International Airport deal with the impact of canceled flights on December 27.
Michael McCoy/Reuters
A gas station canopy lays on its side after high winds and heavy snow in Lackawanna, New York, on December 27. The historic winter storm dumped up to 4 feet of snow on the area.
John Normile/Getty Images
Hundreds of unclaimed suitcases sit near the Southwest Airlines baggage claim area in Tennessee's Nashville International Airport after the airline canceled thousands of flights on December 27.
Seth Herald/AFP/Getty Images
A street is blanketed by snow in downtown Buffalo on Monday, December 26.
Gov. Kathy Hochul/Twitter/AP
A person clears a snow-covered driveway in Buffalo on December 26.
Faith Aktas/Anadolu Agency/Getty Images
A man and a boy walk across the frozen Reflecting Pool towards the Lincoln Memorial in Washington, DC, on December 26.
Jim Watson/AFP/Getty Images
Firefighters carry rescue equipment as they respond to a fire on a snow-covered street in Buffalo on Sunday, December 25.
Jalen Wright/The New York Times/Redux
Snow blankets a neighborhood in Cheektowaga, New York, on Christmas Day. Western New York is drowning in thick "lake effect" snow -- which forms when cold air moves over the warm waters of the Great Lakes -- just one month after the region was slammed with a historic snowstorm.
John Waller via AP
A man tries to dig out his car after he got stuck in a snowdrift about a block from home in Buffalo on Saturday, December 24.
Derek Gee/The Buffalo News via AP
Icicles created by a sprinkler hang from an orange tree in Clermont, Florida, on December 24.
Paul Hennessy/Anadolu Agency via Getty Images
A young holiday traveler passes the time at Detroit Wayne County Metro Airport on December 24.
Matthew Hatcher/Getty Images
Pedestrians deal with the cold in Chicago on December 24.
Pat Nabong/Chicago Sun-Times via AP
Hoak's Restaurant in Hamburg, New York, is seen covered in ice from the spray of Lake Erie on December 24.
Kevin Hoak via Reuters
Nissan Stadium employees clear the field in Nashville before the an NFL football game on December 24.
Mark Zaleski/AP
Amanda Kelly cleans off snow and ice from her car in Columbus, Ohio, on Friday, December 23.
Joseph Scheller/Columbus Dispatch/USA Today Network
Cars drive in whiteout conditions in Orchard Park, New York, on December 23.
Mark Mulville/The Buffalo News/AP
Travelers sleep while lines of people pass through a security checkpoint at Denver International Airport.
David Zalubowski/AP
Snow-covered buildings are seen in Louisville, Kentucky.
Leandro Lozada/AFP/Getty Images
The waters of Lake Erie wash over the shoreline in Hamburg, New York, on December 23.
John Normile/Getty Images
Snow collects on a bison at the Longfield Farm in Goshen, Kentucky, on December 23.
Michael Clevenger/Courier Journal/USA Today Network
Volunteers welcome a homeless person to a shelter at Louisville's Broadbent Arena on December 23.
Leandro Lozada/AFP/Getty Images
Stones are removed from a road in Westport, Massachusetts, after a storm surge made landfall, flooding many coastal areas on December 23.
Peter Pereira/The Standard-Times/AP
The Louisville skyline is obscured by steam rising from the Ohio River on December 23.
Matt Stone/The Louisville Courier/USA Today Network
Antonio Smothers jump-starts his vehicle in Nashville on December 23.
Seth Herald/AFP/Getty Images
Rows of headstones at the North Dakota Veterans Cemetery are blanketed by drifting snow in Mandan on Thursday, December 22.
Tom Stromme/The Bismarck Tribune/AP
Migrants warm themselves by a fire next to the US-Mexico border fence on December 22 in El Paso, Texas.
John Moore/Getty Images
Robert Arnold puts chains onto the tires of his semitrailer while he waits for the eastbound lane of I-70 to reopen in Silverthorne, Colorado, on December 22.
Jason Connolly/AFP/Getty Images
A musician departs following a show on Broadway in Nashville on December 22.
Seth Herald/AFP/Getty Images
Brady Myers helps turn the Stewpot Community Services day shelter for the unhoused into an emergency overnight shelter in Jackson, Mississippi, on December 22.
Barbara Gauntt/Clarion Ledger/USA Today Network
Vehicles travel along Interstate 44 on December 22, in St. Louis.
Jeff Roberson/AP
A person walks through the snow on December 22 in downtown Minneapolis.
Alex Kormann/Star Tribune/AP
A clean car passes a snow-covered car in Des Moines, Iowa.
Charlie Neibergall/AP
Travelers walk in front of flight information screens at O'Hare International Airport in Chicago on December 22.
Nam Y. Huh/AP
Ice collects on a window in Oklahoma City on December 22.
Bryan Terry/The Oklahoman/USA Today Network
Bus riders wait at a sheltered stop in Chicago on December 22.
Charles Rex Arbogast/AP
An accident involving a semi-tractor-trailer blocks the eastbound lanes of Interstate 80 in West Des Moines on December 22.
Bryon Houlgrave/The Des Moines Register/AP
Kids shovel snow off a sidewalk and driveway in Minneapolis on December 22.
Abbie Parr/AP
Travelers arrive for their flights at O'Hare International Airport on December 22 in Chicago.
Kamil Krzaczynski/AFP/Getty Images
Mist rises above ice flows on the Yellowstone River on December 22 in Paradise Valley, Montana.
William Campbell/Getty Images
Students walk to school buses after early dismissal at a middle school in Wheeling, Illinois, on December 22.
Nam Y. Huh/AP
Miguel Salazar clears sidewalks in Denver on December 22.
Hyoung Chang/Denver Post/Getty Images
Travelers arrive at the Minneapolis-Saint Paul International Airport on December 21.
Alex Kormann/Star Tribune/AP
Salt is prepared to be loaded onto a truck at the Department of Public Works sanitation yard in Milwaukee on December 21.
Mike De Sisti/Milwaukee Journal-Sentinel/AP
Propane heaters sit next to pens at the City of Mission Animal Shelter in Mission, Texas, on December 21.
Joel Martinez/The Monitor/AP
Crews de-ice a Southwest Airlines plane before takeoff in Omaha, Nebraska, on December 21.
Chris Machian/Omaha World-Herald/AP
An Iowa Department of Transportation plow clears a road in Iowa City on December 21.
Joseph Cress/Iowa City Press Citizen/AP
Snow covers homes in Seattle on December 20.
Daniel Kim/The Seattle Times/AP
