A powerful arctic cold front that has brought dangerous wind chills of up to 50 below zero has become stationary for the next few days, bringing the risk of a significant ice storm impacting parts of the South into the Tennessee Valley.
Accumulating ice will cause travel issues and likely power outages for sections of Texas, Oklahoma, Arkansas and Tennessee.
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This could be a major issue for millions of people.
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Wind chill warnings and advisories are also in effect for parts of the central and western U.S.
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Meanwhile, on the warmer side of the boundary, heavy rain could cause flash flooding along and south of the front.