Fierce winds blow snow as snowboarder Garrett Ramos, 20, uses a shovel to build a jump in Portland, Maine, on January 3, 2014. (AP Photo/Robert F. Bukaty)

Ice from breaking waves coats a house along the shore in Scituate, Massachusetts, on January 3, 2014. A winter storm slammed into the U.S. Northeast with howling winds and frigid cold, dumping nearly 2 feet (60 centimeters) of snow in some parts and whipping up blizzard-like conditions. (AP Photo/Michael Dwyer)

U.S. Postal Service letter carrier Jamie Jasmon struggles through snow and below zero temperatures while delivering the mail in Springfield, Illinois, on January 6, 2014. (AP Photo/Seth Perlman)

This Friday, January 3, 2014 satellite image provided by the National Oceanic and Atmospheric Administration shows the blanket of snow that stretched from the Midwest across to New England after a massive winter storm moved over the region. (AP Photo/National Oceanic and Atmospheric Administration)

Snowmen sit in front of the Capitol in Washington D.C., on January 3, 2014, after a winter snow storm in the nation’s capital. (AP Photo/Evan Vucci)

A light dusting of snow from an overnight storm covers the statutes at the Korean War Memorial in Washington D.C., early Friday morning, January 3, 2014. (AP Photo/J. David Ake)

Nicholas Simmons, 20, of Greece, New York, warms himself on a steam grate with three homeless men by the Federal Trade Commission, just blocks from the Capitol, during frigid temperatures in Washington, D.C., on January 4, 2014. On New Year’s Day, Simmons disappeared from his parents’ house in a small upstate New York town, leaving behind his wallet, cellphone and everything else. Four days later, an Associated Press photographer, looking for a way to illustrate unusually cold weather, took his picture as he warmed himself on a steam grate a few blocks from the U.S. Capitol. His parents Paul and Michelle Simmons saw the photograph in USA Today Sunday morning after it was brought to their attention through a Facebook page set up to help find their son, according to police and family friends. They were able to report his location to D.C. police who transported Nick to a hospital where he was reunited with his father and brother who drove all day to find him. (AP Photo/Jacquelyn Martin)

A mailbox and bench are covered with ice near a building which caught on fire, and was doused by firefighters in Plattsmouth, Nebraska, on January 3, 2014. (AP Photo/Nati Harnik)

A person struggles to cross a street in blowing and falling snow in St. Louis, on January 5, 2014. (AP Photo/Jeff Roberson)

Farmer Randy Cree chops a hole in the ice while a cow waits to drink water from a pond near Big Springs, Kansas, on January 6, 2014. (AP Photo/Orlin Wagner)

Aidan Morton and Monica Margolis play in the snow on the Brooklyn Bridge during a snowstorm in New York, on January 3, 2014. (AP Photo/John Minchillo)

Passengers at Union Station after their Amtrak train from Los Angeles became stuck in snow drifts on Tuesday, Jan. 7, 2014, in Chicago. The severe weather forced hundreds of Amtrak passengers to spent the night onboard three trains stranded due to the snow in northern Illinois. (AP Photo/Andrew A. Nelles)

The skyline of Pittsburgh is framed by ice along the bank of the Allegheny river at sunset Tuesday, Jan. 7, 2014. Pittsburgh reached a low temperature of minus 9 degrees early Tuesday morning, and a high of 5 degrees. AP Photo/Gene J. Puska

ce in the Mississippi River flows past the Gateway Arch 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)

With temperatures in downtown Pittsburgh -5 degrees early Tuesday, Jan. 7, 2014, a flock of seagulls huddles on the ice formed on the Allegheny river. A high of 2 degrees is predicted for Tuesday in Pittsburgh. (AP Photo/Gene J. Puskar)

A crew works to de-ice planes at O’Hare International Airport in Chicago on Sunday, Jan. 5, 2014. In Chicago, temperatures were expected to fall throughout Sunday to about 11 degrees by 5 p.m. About 1,200 flights had been cancelled Sunday morning at O’Hare and Midway international airports in Chicago, aviation officials said. (AP Photo/Nam Y. Huh)

Ice climber Howie Mievogel uses ice tools and crampons to ascend a frozen waterfall on the cliffs in Riegelsville, Pa. near the Delaware River, Saturday, Jan. 4, 2014. Below zero temperatures have brought ice climbers out of hiding the past few days. (AP Photo/Steve Klaver)

A city bench and other structures are covered in a thick layer of ice after a nearby building caught on fire in Plattsmouth, Neb., Friday, Jan. 3, 2014, and the water sprayed on it by fire fighters froze. Much of the American northeast and the midwest are suffering from sub-freezing temperatures. (AP Photo/Nati Harnik)

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)

In an image made with a fisheye lens, Marguerite Johnston uncovers her car in Grosse Pointe, Mich., Monday, Jan. 6, 2014. Michigan residents are preparing for diving temperatures as they dig out from more than 15 inches of snow in places. (AP Photo/Paul Sancya)

Discharge from a snow blower falls in front of snow covered tress as a man clears his driveway in Indianapolis Monday, Jan. 6, 2014 as temperatures hovered around 10 below zero. More than 12 inches of snow fell on Sunday. (AP Photo/Michael Conroy)

A Kashmiri Muslim girl smiles as she eats snow on the outskirts of Srinagar, India, Monday, Jan. 6, 2014. Overnight snowfall in Kashmir led to an increase in night temperatures by several notches in most places of the valley, according to local reports. (AP Photo/Mukhtar Khan)

Motorists drive along a snow covered northbound Interstate-94 in Chicago on Sunday, Jan. 5, 2014. Sunday night temperatures will drastically drop to about minus 20 degrees. (AP Photo/Nam Y. Huh)

Two people help a stranded motorist up snow-covered exit ramp on I-44 Sunday, Jan. 5, 2014, in St. Louis. Snow that began in parts of Missouri Saturday night picked up intensity after dawn Sunday with several inches of snow on the ground by midmorning and more on the way. (AP Photo/Jeff Roberson)

A person struggles to cross a street in blowing and falling snow Sunday, Jan. 5, 2014, in St. Louis. Snow that began in parts of Missouri Saturday night picked up intensity after dawn Sunday with several inches of snow on the ground by midmorning and more on the way. (AP Photo/Jeff Roberson)

A woman rests on her luggage as she waits in the baggage area of Terminal 2 at Kennedy International Airport after a Delta flight from Toronto to New York skidded off the runway into a snow bank, temporarily halting all airport flights, Sunday, Jan. 5, 2014, in New York. (AP Photo/Kathy Willens)

Michael Jordan statue is covered by snow outside of United Center in Chicago on Saturday, Jan. 4, 2014. The National Weather Service issued a winter storm warning that is in effect until 6 p.m. Sunday calling for moderate to heavy snow that will make for hazardous travel conditions. (AP Photo/Nam Y. Huh)

Sonja Keller walks her dog along the shore in Scituate, Mass., Friday, Jan. 3, 2014. Wind-whipped, fluffy snow continued to fall across the state, buffeted by wind gusts at around 40 miles per hour. National Weather Service reported Friday morning that the temperature in Boston was 2 degrees, but 20-below when the wind chill is factored in. (AP Photo/Michael Dwyer)

A pedestrian uses his cross-country skies on 58th Street during his morning commute, Friday, Jan. 3, 2014, in New York. New York City public schools were closed Friday after up to 7 inches of snow fell by morning in the first snowstorm of the winter. (AP Photo/John Minchillo)

Workers clear snow from a pedestrian passageway at the Astoria Blvd. subway station, Friday, Jan. 3, 2014, in the Queens borough of New York. New York City public schools were closed Friday after up to 7 inches of snow fell by morning in the first snowstorm of the winter. (AP Photo/John Minchillo)

A child makes a snow angel in Times Square, Thursday, Jan. 2, 2014, in New York. The snow storm is expected to bring snow, stiff winds and punishing cold into the Northeast. (AP Photo/John Minchillo)

A general view of a street covered in snow in Kabul, Afghanistan, Monday, Dec. 30, 2013. Kabul has been experiencing below freezing weather and snow. (AP Photo/Rahmat Gul)