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As Chicago flirted with record-breaking low temperatures during a polar vortex cold snap, Tribune photographers fanned out across the city. Here are some of the most stunning images of Chicago they captured.

A man walks along an icy breakwater at sunrise at 31st Street Beach in Chicago on Jan. 29, 2019.
A man walks along an icy breakwater at sunrise at 31st Street Beach in Chicago on Jan. 29, 2019.
Ice forms on Lake Michigan on Jan. 25, 2019.
Ice forms on Lake Michigan on Jan. 25, 2019.
The sunrise reveals a frigid Chicago lakefront with temperatures around minus 20 degrees early Jan. 30, 2019.
The sunrise reveals a frigid Chicago lakefront with temperatures around minus 20 degrees early Jan. 30, 2019.
Ice formations on the Chicago River on Jan. 31, 2019.
Ice formations on the Chicago River on Jan. 31, 2019.
The city's James J. Versluis, an 80-foot ice-breaking tugboat built in 1957, at work on Jan. 31, 2019 in the Chicago River.
The city’s James J. Versluis, an 80-foot ice-breaking tugboat built in 1957, at work on Jan. 31, 2019 in the Chicago River.
<img loading="" class="lazyload size-article_feature" data-sizes="auto" alt="Ice forms intricate patterns on the inside of the windows at the Garfield Park Conservatory on a freezing morning, Jan. 31, 2019. Find out why this happens.” title=”Ice forms intricate patterns on the inside of the windows at the Garfield Park Conservatory on a freezing morning, Jan. 31, 2019. Find out why this happens.” src=”/wp-content/uploads/migration/2019/02/01/43FA35WNPJHA7ALE5SRWNQMJ64.jpg”>
Ice forms intricate patterns on the inside of the windows at the Garfield Park Conservatory on a freezing morning, Jan. 31, 2019. Find out why this happens.
Lake Michigan waves splash against a breakwater at sunrise at 31st Street Beach in Chicago on Jan. 29, 2019.
Lake Michigan waves splash against a breakwater at sunrise at 31st Street Beach in Chicago on Jan. 29, 2019.
Ice forms along the shoreline and around Navy Pier on Lake Michigan, Jan. 29, 2019 in Chicago.
Ice forms along the shoreline and around Navy Pier on Lake Michigan, Jan. 29, 2019 in Chicago.
Ice forms intricate patterns on the inside of the windows at the Garfield Park Conservatory on a freezing morning, Jan. 31, 2019, in Chicago.
Ice forms intricate patterns on the inside of the windows at the Garfield Park Conservatory on a freezing morning, Jan. 31, 2019, in Chicago.
Snow and ice cover Cloud Gate as the sculpture is surrounded by very few visitors on a day with below zero temperatures, Jan. 30, 2019, in Chicago.
Snow and ice cover Cloud Gate as the sculpture is surrounded by very few visitors on a day with below zero temperatures, Jan. 30, 2019, in Chicago.
The city's James J. Versluis, an 80-foot ice-breaking tugboat built in 1957, at work Thursday, Jan. 31, 2019 in the Chicago River. (Brian Cassella/baiduhai)
The city’s James J. Versluis, an 80-foot ice-breaking tugboat built in 1957, at work Thursday, Jan. 31, 2019 in the Chicago River. (Brian Cassella/baiduhai)
Ice covers tree branches at Promontory Point on Jan. 30, 2019.
Ice covers tree branches at Promontory Point on Jan. 30, 2019.

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