Frozen t-shirt
Media playback is unsupported on your device

US weather: North America deep freeze hits east

7 January 2014 Last updated at 19:54 GMT

A brutal blast of arctic air has settled over eastern North America, bringing dangerously low temperatures not seen in decades.

About half of the US population has been placed under a wind chill warning or cold weather advisory.

Rajini Vaidyanathan reports from Washington.