Last updated at 10:16
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Parts of the US prepares for record-breaking low temperatures

Images from the snowstorms sweeping across the north-east of the US.
Cars were covered with snow at Chicago's O'Hare International Airport, which saw major delays and cancellations because of the storm.
Cars are covered by snow in rental car parking lot at O'Hare International Airport in Chicago, Thursday, Jan. 2, 2014
In the Canadian state of Michigan, the Winter Classic outdoor NHL hockey game against Detroit Red Wings and the Toronto Maple Leafs went ahead despite the state seeing up to 10in of snow fall.
A Detroit Red Wings fan, coated with snow, watches during the third period of the Winter Classic outdoor NHL hockey game against the Toronto Maple Leafs at Michigan Stadium in Ann Arbor, Mich., Wednesday, Jan. 1, 2014.
More than 2,200 flights were cancelled on Thursday, and by the early hours of Friday a further 1,730 flights scheduled for later in the day had already been cancelled, according to FlightAware.com.
An American Airlines crew member sprays de-icing solution on a plane during a winter north eastern snow storm in Boston, Massachusetts January 2, 2014.
A man walks past waves crashing against the seawall in Lynn, Massachusetts. Weather officials have also issued a blizzard warning for the Long Island region of New York, where up to 10in of snow is expected.
A man jogs past waves crashing against the seawall around high tide during a winter nor"easter snowstorm in Lynn, Massachusetts January 2, 2014.
People across the north-east have been buying lots of shovels and salt. Residents have been warned not to spent too much time outside because of the freezing temperatures.
Michelle Kottke shovels snow with the help of her dog Harlee in Barrington, Ill., Thursday, Jan. 2, 2014.
Heavy snowfall was also expected in parts of the states of Vermont, New Hampshire and Maine, where many residents were recently without electricity because of an ice storm.
Kevin Pokorny works on his third house clearing snow for neighbour's in Barrington, Ill., Thursday, Jan. 2, 2014.
Forecasters say temperatures in the US Mid-West could feel as low as -50C with the effect of wind chill.
Maintenance worker Joe Ehrenberg uses an Unimog to clear snow from a ramp at the Southwest Michigan Regional Airport Thursday, Jan. 2, 2014
Emergency workers respond to a vehicle that slid off the road.
Emergency workers respond to a vehicle that slid off the road.
In New Jersey, residents were urged to stay home as temperatures reached below minus 20C.
man clearing snow in parking lot
A winter storm has already covered areas of Canada and the north-eastern US with up to 60 cm of snow.
People walking through snow