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Story summary
- A polar vortex will bring significant cold and snowfall to Wisconsin and other U.S. regions this December.
- Milwaukee faces single-digit temperatures and negative wind chills, with continued fluctuations through the month.
- Forecasters expect up to a foot of snow in regions such as the Northern Rockies and High Plains.
- The Midwest and Great Lakes will see lake-enhanced snow as cold air moves over warmer waters, with possible storms.
