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Temperatures plunged far and fast Thursday as a winter storm began forming ahead of Christmas weekend, promising heavy snow, ice, flooding and powerful winds across a broad swath of the country and complicating holiday travel.
The National Weather Service reported that temperatures across the central High Plains plummeted 50 degrees Fahrenheit in just a few hours. In much of the country, the Christmas weekend could be the coldest in decades.
The storm was so large and encompassing that around 190 million people were under some type of winter weather advisory, the weather service had said Wednesday.
