Deep Freeze

A man sprays chemicals on the wing of a United Airlines airplane to de-ice before it takes off from JFK International Airport in New York on January 26, 2013. REUTERS/Adrees Latif (UNITED STATES - Tags: TRANSPORT ENVIRONMENT)

NEW YORK, NY - JANUARY 26: People play in the snow at the Winter Jam in Central Park on January 26, 2013 in New York City. The annual festival brings skiing, snowboarding and snowshoeing to New Yorkers with free equipment. (Photo by Mario Tama/Getty Images)

Young men participate in a pickup game of hockey on January 26, 2013 on the frozen reflecting pool in front of the US Capitol in Washington. Below freezing temperatures over the past few days have made conditions ideal for the skaters. AFP PHOTO/Karen BleierKAREN BLEIER/AFP/Getty Images

In this Friday, Jan. 25, 2013 photo, railyard signalman Phil Smith uses a portable propane torch to thaw the track switches from recent snowfall at the Norfolk Southern Roanoke Terminal in downtown Roanoke, Va. About 1 to 2 inches of snowfall covered the region with freezing temperatures, which are expected to continue through the weekend. (AP Photo/Don Petersen)

Debbie Dukes scrapes the ice off her daughter's sport utility vehicle Friday morning, Jan. 25, 2013 in Owensboro, Ky. Wide swaths of Kentucky were glazed with ice early Friday that caused numerous wrecks, including a 10-vehicle pileup and a Greyhound bus that slid off a slick interstate. (AP Photo/The Messenger-Inquirer, John Dunham)

A jogger runs with two dogs in the snow along the north side of Lakeshore Drive in Chicago, Friday, Jan. 25, 2013. The 1.1 inches that settled on Windy City streets and sidewalks marked the latest first seasonal snowfall of at least an inch in the Midwest metropolis since at least 1884, when records were first kept, National Weather Service forecaster Matt Friedlein said. The previous record was set on Jan. 17, 1899. Friday also broke Chicago's longest streak of consecutive days without an inch of snow. The city went 335 days, or about 11 months, without at least an inch, Friedlein said. (AP Photo/Nam Y. Huh)

Ice-encrusted Dennis Ring, of the Middleton Fire Department, works at the scene of a four-alarm fire in a brick business building in Lawrence, Mass. Thursday, Jan. 24, 2013. No injuries were reported according to authorities on the scene. Temperatures dipped into the single digits in the region Thursday. (AP Photo/Elise Amendola)

NEW YORK, NY - JANUARY 24: A pedestrian bundled up against the cold walks through the streets of Manhattan on January 24, 2013 in New York City. Polar air settled in over the northwest U.S. Wednesday, with temperatures in the teens and twenties. (Photo by John Moore/Getty Images)

Erin Leighton sips a coffee while seated next to a frost-covered window at a coffee shop, Thursday, Jan. 24, 2013, in Portland, Maine. An arctic cold front with sub-zero temperatures continues to grip the region. (AP Photo/Robert F. Bukaty)

A fountain partially covered by ice is seen at Bryant Park in New York, January 24, 2013. Frigid arctic air held the U.S. Midwest and Northeast in its icy grip on Wednesday, with the cold so dangerous that municipal emergency warming centers opened up and ski resorts shut down. Wintry conditions from Minneapolis to Washington marked the coldest conditions in many parts of the United States in four years, but were nowhere near the record lows for January, meteorologists said. REUTERS/Eduardo Munoz (UNITED STATES - Tags: ENVIRONMENT SOCIETY)

The White House walkway is cleared of fresh snow which fell overnight in the Washington region, January 24, 2013. REUTERS/Larry Downing (UNITED STATES - Tags: POLITICS ENVIRONMENT)

With the temperature at minus 6 degrees Fahrenheit, steam vapors from the Sappi paper mill dissipate into the early morning sky in Westrbook, Maine, Thursday morning, Jan. 24, 2013. An arctic cold front continues to grip the region. (AP Photo/Robert F. Bukaty)

Chicago Fire Department Lieutenant Charley De Jesus walks around an ice-covered warehouse that caught fire Tuesday night in Chicago January 23, 2013. Fire department officials said it is the biggest fire the department has had to battle in years and one-third of all Chicago firefighters were on the scene at one point or another trying to put out the flames. An Arctic blast continues to gripped the U.S. Midwest and Northeast Wednesday, with at least three deaths linked to the frigid weather, and fierce winds made some locations feel as cold as 50 degrees below zero Fahrenheit. (minus 46 degrees Celsius) REUTERS/John Gress (UNITED STATES - Tags: DISASTER ENVIRONMENT)

A man is bundled up against the cold on New York's 34th Street in Midtown Manhattan Wednesday, Jan. 23, 2013. The temperature was around 12 degrees, but with wind gusts of 15-20 mph, it felt more like five below as people started their day in New York City. (AP Photo/Mark Lennihan)

A man walks his dog across Lake Harriet near Minneapolis (background) January 23, 2013. The Upper Midwest remains locked in a deep freeze, with bitter sub-zero temperatures and wind chills stretching into a fourth day across several states due to waves of frigid Arctic air. REUTERS/Eric Miller (UNITED STATES - Tags: ENVIRONMENT)

South Boston residents who did not wish to be identified walk their dogs at Castle Island in Boston, Wednesday, Jan. 23, 2013. The National Weather Service says it's not expected to get above 17 degrees in Boston, with the wind chill making it feel five below. (AP Photo/Michael Dwyer)

Steve Tannen wears heavy clothing to protect himself against freezing wind chills as he practices for an upcoming bike race in northern Minnesota near Lake Harriet in Minneapolis, January 23, 2013. The Upper Midwest remains locked in a deep freeze, with bitter sub-zero temperatures and wind chills stretching into a fourth day across several states due to waves of frigid Arctic air. REUTERS/Eric Miller (UNITED STATES - Tags: ENVIRONMENT)

Icicles hang from pipes inside the Times Square subway station in New York Wednesday, Jan. 23, 2013 in New York. New York City commuters faced temperatures in the teens on their way to work Wednesday morning, and the National Weather Service warned that prolonged exposure to the arctic air can cause frostbite and hypothermia. (AP Photo/Donald King)

The temperature on Wednesday, Jan. 23, 2013 read 9 degrees as a pedestrian makes her frigid walk on Spruce Street in downtown Scranton, Pennsylvania. (AP Photo/The Scranton Times-Tribune, Butch Comegys) WILKES BARRE TIMES-LEADER OUT; MANDATORY CREDIT

People are bundled up against the cold on New York's 34th Street in Midtown Manhattan Wednesday, Jan. 23, 2013. The temperature was around 12 degrees, but with wind gusts of 15-20 mph, it felt more like five below as people started their day in New York City. (AP Photo/Mark Lennihan)

Bundled up against the extreme cold, Julie Caruso of Akron, Ohio, waits in a long line for a tour of the White House in Washington January 22, 2013. REUTERS/Kevin Lamarque (UNITED STATES - Tags: ENVIRONMENT)

Commuters bundle up against extreme cold conditions Tuesday, Jan. 22, 2013, in Chicago. Temperatures in the area were hovering around zero with sub-zero wind chill reading hitting 10 below. Forecasters say waves of frigid Arctic air began moving over the region Saturday night Jan. 19, 2013. (AP Photo/M. Spencer Green)