Battling the early start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Battling snow and wind crossing the Kinzie Street bridge at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Biker crossing Kinzie Street bridge at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Demetrio Jimenez keeping the sidewalk clean on N. Clinton Street at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Chicago Harbors boat workers break up the freezing ice at Burham Harbor in the oncoming snow on Tuesday, March 5, 2013. They do this to relieve the structural stress to the piers caused by the freezing ice. | Al Podgorski~Chicago Sun-Times

Jenny O'Leary and her son William, 3, sled near Montrose Harbor in Chicago, Ill., on Tuesday, March 5, 2013. | Andrew A. Nelles~Sun-Times Media

The snow starts to fall in downtown Chicago. Tuesday, March 5, 2013 | Brian Jackson~ Sun-Times

The snow starts to fall in downtown Chicago. Tuesday, March 5, 2013 | Brian Jackson~ Sun-Times

Maury Lawson drags his suitcase through the snow Monday, March 4, 2013, while crossing N.P. Avenue in Fargo, N.D., on his way to the bus depot. (AP Photo/Michael Vosburg, The Forum)

Eric, a Moorhead, Minn. man who did not give his last name, plays with an ATV after a snowstorm left city streets slick on Monday, March 4, 2013. (AP Photo/Minnesota Public Radio, Nathaniel Minor)

Snow-covered trees form a scenic canopy over Avenue C in Bismarck on Monday, March 4, 2013, in the wake of a slow moving winter storm that passed through the state leaving southern areas of North Dakota with rain that later turned to snow. Northern areas of the state received significant snowfall totals causing school closings and many cancellations of scheduled events and travel advisories. (AP Photo/The Bismarck Tribune, Tom Stromme)

A tow truck operator prepares to haul away a car involved in an accident on Interstate 94 in Fargo, N.D. on Monday, March 4, 2013. Overnight snow made travel treacherous across much of the upper Midwest. (AP Photo/Minnesota Public Radio,Nathanial Minor)

In this Feb. 28, 2013 photo, Anthony LaGiglia, an Illinois State University art major from Frankfort, Ill., poses with the snow sculpture of Batman he created on the ISU quadrangle in Normal, Ill. LaGiglia used a plastic dining hall knife to help make the statue. (AP Photo/The Pantagraph, Steve Smedley)

In this Feb. 28, 2013 photo, Jonathon Napiorkowski, of Gurnee, Ill., a junior at Illinois State University photographs Anna Templin, a junior from Hagerstown, Indiana, by a large snow sculpture of Batman that has been drawing a large following on the ISU quadrangle in Normal, Ill. The sculpture was created by art major Anthony LaGiglia using a plastic dining hall knife. (AP Photo/The Pantagraph, Steve Smedley)

Sprinkling the snow salt at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Snow Train, an Amtrak train arriving at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Battling snow and wind crossing the Kinzie Street bridge at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Battling snow and wind crossing the Kinzie Street bridge at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Battling snow and wind crossing the Kinzie Street bridge at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

The Kennedy Expressway was nearly clear of traffic at 9am near Canfield looking west, as the snow only began to pick up in intensity after the morning rush hour on Tuesday, March 5, 2013. | Al Podgorski~Chicago Sun-Times

Dog time on Clinton Street during start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Chicago Harbors boat workers break up the freezing ice at Burham Harbor in the oncoming snow on Tuesday, March 5, 2013. They do this to relieve the structural stress to the piers caused by the freezing ice. | Al Podgorski~Chicago Sun-Times

Demetrio Jimenez keeping the sidewalk clean on N. Clinton Street at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Enjoy the snow flakes at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Clinton & Washington at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Crossing the Kinzie Street bridge at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Battling snow and wind crossing the Kinzie Street bridge at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Battling snow and wind crossing the Kinzie Street bridge at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Battling snow and wind crossing the Kinzie Street bridge at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Battling snow and wind crossing the Lake Street bridge at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

Clinton & Washington at start of heavy snow fall in Chicago, Tuesday, March 5, 2013. | John H. White~Sun-Times

An exercise walker uses ski poles to get a workout near Burnham Harbor despite the intensity of the oncoming snow in Chicago on Tuesday, March 5, 2013. | Al Podgorski~Chicago Sun-Times

An exercise walker uses ski poles to get a workout near Burnham Harbor despite the intensity of the oncoming snow in Chicago on Tuesday, March 5, 2013. | Al Podgorski~Chicago Sun-Times

At the Shedd Aquarium, one could look out and see the piers minus any boats fade in detail to the approaching snowstorm in Chicago on Tuesday, March 5, 2013.

The sculptures of Daphne are covered in snow at Northerly Island as the snow came down heavily on Tuesday, March 5, 2013. Adler Planetarium could be barely seen in the distance. (The figurative sculptures of Daphne are all made from scraps of discarded Cadillac cars. One the the themes of this Chicago based artist of Dessa Kirk, is to find hidden beauty in ugliness.) | Al Podgorski~Chicago Sun-Times

The sculptures of Daphne are covered in snow at Northerly Island as the snow came down heavily on Tuesday, March 5, 2013. . (The figurative sculptures of Daphne are all made from scraps of discarded Cadillac cars. One the the themes of this Chicago based artist of Dessa Kirk, is to find hidden beauty in ugliness.) | Al Podgorski~Chicago Sun-Times

The sculptures of Daphne are covered in snow at Northerly Island as the snow came down heavily on Tuesday, March 5, 2013. Adler Planetarium could be barely seen in the distance. (The figurative sculptures of Daphne are all made from scraps of discarded Cadillac cars. One the the themes of this Chicago based artist of Dessa Kirk, is to find hidden beauty in ugliness.) | Al Podgorski~Chicago Sun-Times

Chicago Harbors boat workers break up the freezing ice at Burham Harbor in the oncoming snow on Tuesday, March 5, 2013. They do this to relieve the structural stress to the piers caused by the freezing ice. | Al Podgorski~Chicago Sun-Times

Jenny O'Leary and her son William, 3, sled near Montrose Harbor in Chicago, Ill., on Tuesday, March 5, 2013. | Andrew A. Nelles~Sun-Times Media

Justin Leicht, of Chicago, Ill., walks his dogs Angel and Midnight at Montrose Harbor in Chicago, Ill., on Tuesday, March 5, 2013. | Andrew A. Nelles~Sun-Times Media

Seagulls gather on the lakefront near Montrose Harbor in Chicago, Ill., on Tuesday, March 5, 2013. | Andrew A. Nelles~Sun-Times Media