A severe winter storm that could affect more than 200 million Americans has brought heavy snow, and freezing temperatures.

Regions that could see more than a foot of snow stretch from Colorado to West Virginia, New York City and up to Boston, according to the National Weather Service.

More than 10,000 US flights were cancelled over the weekend as the winter storm grips America.

Video from Oklahoma shows the efforts to clear the snowfall from the states’ roads and airport runways.

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