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Pedestrians cross an intersection near a subway steam vent in downtown Toronto on Tuesday, Jan. 7, 2014. Brutal, record-breaking cold descended on the East and South, sending the mercury plummeting Tuesday into the single digits and teens from Boston, New York and Washington to Atlanta, Nashville and Birmingham places where many people have almost no idea how to deal with freezing weather. (AP Photo/The Canadian Press, Chris Young) ( Deep Feeze Canada )

The cold weather makes vision challenging as Jobin Curoe's glasses fog up while walking in subzero temperatures and wind chills reaching minus 40 to minus 50 degrees on the Lawrence University campus Monday, Jan. 6, 2014, in Appleton, Wis. Frigid, dense air swirled across much of the U.S. on Monday, forcing some cities and their residents into hibernation while others layered up and carried on despite a dangerous cold that broke decades-old records. (AP Photo/The Post-Crescent, Sharon Cekada ) ( CORRECTION Deep Freeze Wisconsin )

The Chicago skyline is seen behind a large chunk of ice near North Avenue Beach as cold temperatures remain with wind chills nearing minus 30 Fahrenheit on Tuesday, Jan. 7, 2014, in Chicago. Dangerously cold polar air snapped decades-old records as it spread Tuesday from the Midwest to southern and eastern parts of the U.S. and eastern Canada, making it hazardous to venture outside and keeping many schools and businesses closed. (AP Photo/Andrew A. Nelles) ( Deep Freeze Illinois )

Passengers heading into downtown wait on an "L" platform for the train to arrive in below zero temperatures on January 7, 2014 in Chicago, Illinois. Platforms were crowded and trains were delayed because doors on the trains kept freezing open. Chicago is experiencing its third consecutive day of below zero temperatures. (Photo by Scott Olson/Getty Images) ( 461195445 )

Ice-covered plants are seen in Panama City Beach, Fla. on Tuesday, Jan. 7, 2014. Brutal, record-breaking cold descended on the East and South, sending the mercury plummeting Tuesday. Sprinklers left on overnight created the icy cover. (AP Photo/The News Herald, Andrew Wardlow) ( APTOPIX Deep Freeze Florida )

Buyers are bundled up as record low temperatures didn't stop the foreclosure sale on the steps of the Fulton County Courthouse Tuesday Jan. 7, 2014, in Atlanta Ga.. Buyer representative Adam Nagel was prepared for the long day in the cold, but not everyone was. "I'm actually pretty warm, I feel sorry for some of the other guys" (AP Photo/Atlanta Journal-Constitution, Brant Sanderlin) ( Deep Freeze Atlanta )

A man crosses Woodward Avenue in front of a steam vent in Detroit, Michigan, USA, 07 January 2014. A deep freeze threatened much of the eastern US seaboard on 07 January as the mercury plunged into lows not seen in nearly two decades, government forecasters said. 'Dangerously cold Arctic air' will be descend on the eastern two-thirds of the nation after gripping northern and mid-western states since 05 January, the National Weather Service warned. EPA/JEFF KOWALSKY ( USA WEATHER )

Doc Cheng bundles up with her chihuahua Happy as she braves a cold Arctic blast that brought temperatures down to 6 degrees above zero, closing local schools and shattering cold weather records, on Tuesday, Jan. 7, 2014, in Atlanta. (AP Photo/David Tulis) ( Deep Freeze Pets )

A police officer walks past a steam grate in Lower Manhattan Borough of New York, New York, USA, 07 January 2013. Many parts of the United States are experiencing record cold temperatures due to an usual polar vortex of arctic air. EPA/ANDREW GOMBERT ( USA NEW YORK WEATHER )

Cecy Wang, right, clears snow off her car as Samuel Scott, left, shovels a sidewalk Tuesday, Jan. 7, 2014, in St. Louis. As Missourians muddled through another frigid day Tuesday, the worst cold snap in nearly two decades was about to come to an end but many roads remained partly snow-covered two days after a winter storm dumped several inches of snow. (AP Photo/Jeff Roberson) ( Deep Freeze Missouri )

A woman in wheelchair passes a steam grate in Lower Manhattan Borough of New York, New York, USA, 07 January 2013. Many parts of the United States are experiencing record cold temperatures due to an usual polar vortex of arctic air. EPA/ANDREW GOMBERT ( USA NEW YORK WEATHER )

A pedestrian bundles up and crosses an icy patch on the sidewalk at Georgia State University as a cold Arctic blast brought temperatures down to 6 degrees above zero to shatter cold weather records, on Tuesday, Jan. 7, 2014, in Atlanta. (AP Photo/David Tulis) ( Deep Freeze )

A pedestrian braves the cold on January 7, 2014 in New York City. A 'polar vortex' of frigid air centered on the North Pole dropped temperatures to a record low 4 degrees in New York City. (Photo by John Moore/Getty Images) ( 461181749 )

A cold sun rises over the city of Johnstown, Pa. Tuesday Jan. 7, 2014. The temperature was at minus 18 degrees at 8 a.m. (AP Photo/The Tribune-Democrat, Todd Berkey) ( Deep Freeze )

A woman bundles up against the cold on the morning of January 7, 2014 in New York, United States. A polar vortex has descended on much of North America, coming down from the Arctic, bringing record freezing temperatures across much of the country. (Photo by Andrew Burton/Getty Images) ( 461169407 )

A man walks past an American flag sign in the cold through Times Square in Midtown Manhattan on January 7, 2014 in New York City. A 'polar vortex' of frigid air centered on the North Pole dropped temperatures to a record low 4 degrees in New York City. (Photo by John Moore/Getty Images) ( 461194451 )

A runner jogs on a stretch of beach at Coney Island during subzero cold weather on January 7, 2014 in the Brooklyn borough of New York City. A "polar vortex" carrying Arctic air and wind gusts of up to 50 mph has engulfed New York City and much of the Northeast making for life threatening weather conditions. (Photo by Spencer Platt/Getty Images) ( 461194559 )

Commuters wait on a frozen sidewalk in below zero temperatures for a bus to arrive on January 7, 2014 in Chicago, Illinois. Chicago is experiencing its third consecutive day of below zero temperatures. (Photo by Scott Olson/Getty Images) ( 461200397 )

Passengers heading into downtown share some warmth as while they wait on an "L" platform for the train to arrive in below zero temperatures on January 7, 2014 in Chicago, Illinois. Platforms were crowded and trains were delayed because doors on the trains kept freezing open. Chicago is experiencing its third consecutive day of below-zero temperatures. (Photo by Scott Olson/Getty Images) ( 461200405 )

A family braves the cold to take photographs along the icy shore of Lake Michigan as temperatures remain in the negative digits on January 7, 2014 in Milwaukee, Wisconsin. A 'polar vortex' of frigid air centered on the North Pole dropped temperatures to the negative double digits at its worst. (Photo by Darren Hauck/Getty Images) ( 461201103 )

A pedestrian braves the cold as temperatures remain in the negative digits on January 7, 2014 in Milwaukee, Wisconsin. A 'polar vortex' of frigid air centered on the North Pole dropped temperatures to the negative double digits at its worst. (Photo by Darren Hauck/Getty Images) ( 461201151 )

A cyclist braves the cold as temperatures remain in the negative digits on January 7, 2014 in Milwaukee, Wisconsin. A 'polar vortex' of frigid air centered on the North Pole dropped temperatures to the negative double digits at its worst. (Photo by Darren Hauck/Getty Images) ( 461201155 )

Pedestrians brave the cold as temperatures remain in the negative digits on January 7, 2014 in Milwaukee, Wisconsin. A 'polar vortex' of frigid air centered on the North Pole dropped temperatures to the negative double digits at its worst. (Photo by Darren Hauck/Getty Images) ( 461201159 )

A man braves the cold and walks along the shore of Lake Michigan as temperatures remain in the negative digits on January 7, 2014 in Milwaukee, Wisconsin. A 'polar vortex' of frigid air centered on the North Pole dropped temperatures to the negative double digits at its worst. (Photo by Darren Hauck/Getty Images) ( 461201163 )

A homeless woman is layered in clothes as she sorts her possessions during subzero cold weather on January 7, 2014 in New York City. A "polar vortex" carrying Arctic air and wind gusts of up to 50 mph has engulfed New York City and much of the Northeast making for life threatening weather conditions. (Photo by Spencer Platt/Getty Images) ( 461201885 )

Ice covers rocks and brush on the break wall at Edgewater Park in Cleveland Tuesday, Jan. 7, 2014. An official low of -11 degrees broke the 130-year-old record for the date as cold polar air spread from the Midwest to southern and eastern parts of the U.S. and eastern Canada. (AP Photo/Mark Duncan) ( Deep Freeze Ohio )

Steam rises from buildings Tuesday, Jan. 7, 2014, in downtown Cincinnati where temperatures were below zero in the morning. Brutal, life-threatening cold descended over the East and the South, sending the mercury plummeting Tuesday into the single digits and teens. (AP Photo/Al Behrman) ( Deep Freeze Ohio )

The Chicago skyline is photographed behind a large chunk of ice near North Avenue Beach as cold temperatures remain with wind chills nearing minus 30 Fahrenheit on Tuesday, Jan. 7, 2014, in Chicago. Dangerously cold polar air snapped decades-old records as it spread Tuesday from the Midwest to southern and eastern parts of the U.S. and eastern Canada, making it hazardous to venture outside and keeping many schools and businesses closed. (AP Photo/Andrew A. Nelles) ( Deep Freeze Illinois )

Leaves are captured in the frozen runoff water along the curb on Wiley Drive in South Roanoke, Va., Tuesday, Jan. 7, 2014. Brutal, life-threatening cold descended over the East and the South, sending the mercury plummeting Tuesday into the single digits and teens. (AP Photo/The Roanoke Times, Stephanie Klein-Davis) ( Deep Freeze Virginia )

A vehicle drives through a barely visible intersection of Route 33 and Batavia Stafford Townline Road on Tuesday, Jan. 7, 2014 in Stafford, NY. Dangerously cold polar air snapped decades-old records as it spread Tuesday from the Midwest to southern and eastern parts of the U.S. and eastern Canada, making it hazardous to venture outside and keeping many schools and businesses closed. (AP Photo/Democrat & Chronicle, Tina Macintyre-Yee) ( Deep Freeze )

A driver negotiates an ice patch in a parking lot as a cold Arctic blast brought temperatures down to 6 degrees above zero to shatter cold weather records, on Tuesday, Jan. 7, 2014, in Atlanta. (AP Photo/David Tulis) ( Deep Freeze )

A homeless man bundled against the cold goes through the trash as temperatures dipped into the single digits Fahrenheit and minus degrees with the wind chill on January 7, 2014 in Washington, DC. A blast of bone-chilling cold reaching lows not seen in two decades gripped the United States early Tuesday, snarling air travel, closing schools and prompting calls for people to stay inside. Superlatives of cold-talk abounded, even in midwestern states used to chest-high snow and bitter cold, as the National Weather Service said the deep freeze was making its way east. AFP PHOTO / Karen BLEIER/AFP/Getty Images ( 525801016 )

At 8:30 a.m. the temperature outside the United Bank building is minus two degrees in Charleston, W. Va., Tuesday Jan. 7, 2014.s Brutal, record-breaking cold descended on the East and South, sending the mercury plummeting Tuesday . (AP Photo/The Daily Mail, Craig Cunningham ) ( Deep Freeze West Virginia )

With temperatures below zero, Brenda Williams, 53, of Charleston, braves the cold to get her haircut downtown Charleston, W.Va.. Her glasses had frosted over and she could barely see. (AP Photo/The Daily Mail, Craig Cunningham) ( Deep Freeze )

A man walks past a snow encrusted bicycle with wind chills nearing minus 30 Fahrenheit on Tuesday, Jan. 7, 2014, in downtown Chicago. Dangerously cold polar air snapped decades-old records as it spread Tuesday from the Midwest to southern and eastern parts of the U.S. and eastern Canada, making it hazardous to venture outside and keeping many schools and businesses closed. (AP Photo/Andrew A. Nelles) ( Deep Freeze )

Sarah Smith tries to kick a clear path in the snow to free her trapped car on Tuesday, Jan. 7, 2014, outside of her apartment along the 5100 block of Waterman Blvd. in St. Louis. "I had a shovel but it was stolen off my porch!, " said Smith. (AP Photo/St. Louis Post-Dispatch, Laurie Skrivan) ( Deep Freeze )

A woman bundled against the cold walks past a homeless man in McPherson Square as temperatures dipped into the single digits Fahrenheit and minus degrees with the wind chill on January 7, 2014 in Washington, DC. A blast of bone-chilling cold reaching lows not seen in two decades gripped the United States early Tuesday, snarling air travel, closing schools and prompting calls for people to stay inside. Superlatives of cold-talk abounded, even in midwestern states used to chest-high snow and bitter cold, as the National Weather Service said the deep freeze was making its way east. AFP PHOTO/MLADEN ANTONOV/AFP/Getty Images ( 525801492 )

Pedestrians bundled against the cold walk past a warning board as temperatures dipped into the single digits Fahrenheit and minus degrees with the wind chill on January 7, 2014 in Washington, DC. A blast of bone-chilling cold reaching lows not seen in two decades gripped the United States early Tuesday, snarling air travel, closing schools and prompting calls for people to stay inside. Superlatives of cold-talk abounded, even in midwestern states used to chest-high snow and bitter cold, as the National Weather Service said the deep freeze was making its way east. AFP PHOTO/MLADEN ANTONOV/AFP/Getty Images ( 525805722 )