Sub-zero arctic blast strikes US

Sub-zero arctic blast strikes US

Millions of people across the United States today made last minute preparations for an unusually bitter Arctic blast that could send temperatures plummeting to their coldest in 20 years.

The northeastern United States and parts of Canada have endured heavy snow and deadly sub-zero conditions since the start of the year, but the deep freeze is now moving through the midwestern United States and threatening usually balmy areas further south like Tennessee and Alabama.

The wind chill from the rare "polar vortex" could make it feel as cold as -60 Fahrenheit (-51 Celsius) in places, weather forecasters say, prompting authorities in several towns and cities to issue warnings that people should stay indoors and stock up on food.

Exposed skin could suffer frostbite in as little as five minutes in such conditions, experts warn.The National Weather Service described the weather as "life-threatening."

"The coldest temperatures in almost two decades will spread into the northern and central US today behind an Arctic cold front," it said.

"Combined with gusty winds, these temperatures will result in life-threatening wind-chill values as low as 60 degrees (Fahrenheit) below zero. Also, heavy snow will develop from the eastern Plains to the Great Lakes today, with up to a foot of accumulation possible."

Authorities warning people that they could face issues like cars that won't start and flooded roads that quickly ice over caused by  water pipes that freeze and burst.

Thousands of flights out of major airports like Chicago O'Hare International and New York's John F Kennedy were delayed or cancelled yesterday due to weather-related problems. At O'Hare, one of the country's busiest airports, officials said that more than 1,300 flights were cancelled.

The states of Minnesota and North Dakota were expected to experience the worst weather.Minnesota Governor Mark Dayton announced that schools will be closed today "to protect all our children from the dangerously cold temperatures."

In Wisconsin, yesterday's National Football League playoff showdown between the Green Bay Packers and the San Francisco 49ers at the open-air Lambeau Field in Wisconsin was one of the coldest NFL games in history.

The Packers helped fans battle the big freeze by handing out free coffee, hot chocolate and hand warmers. Fans were allowed to bring blankets and sleeping bags.

Freezing rain is forecast to hit the south and east, affecting the New England region, New York and Washington, with the extreme weather expected to continue into the early part of the week in many places. 

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