09 January 2014 16:45 | By Francis Whittaker
Polar vortex: The US big freeze continues

Pictures of the ongoing sub zero conditions in North America



Plattsmouth, Nebraska (© Nati Harnik/AP Photo)
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  • Plattsmouth, Nebraska (© Nati Harnik/AP Photo)
  • Brooklyn, New York (© Peter Morgan/AP Photo)
  • Chicago, Illinois (© Scott Olson/Getty Images)
  • Detroit, Michigan (© Paul Sancya/AP Photo)
  • Scituate, Massachusetts (© Rick Friedman/rickfriedman.com/Corbis)
  • Manhattan, New York (© Zoran Milich/Reuters)
  • Pittsburgh, Pennsylvania (© Gene J. Puskar/AP Photo)
  • Missouri (© Jeff Roberson/AP Photo)
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Nati Harnik/AP PhotoShow Thumbnails
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A record-shattering cold spell has continued to grip parts of the United States. Much of North America is currently in the midst of a polar vortex - a system of dense air which produces freezing temperatures and normally sits in the Arctic during the winter months. This has caused a blanket of severe snow and ice, bringing some towns and cities to a standstill and causing travel chaos in others.

Above, sunlight streams through the windows of an ice-covered building in Plattsmouth, Nebraska. The building had caught fire, and was doused with water by firefighters, which subsequently froze, causing these stunning ice formations.

Click or swipe for more of Americas' big freeze, captured on camera.

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