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Story summary
- An Arctic blast will push frigid air southward from Alaska and Northern Canada, affecting the Upper Midwest, the Great Lakes, and New England.
- Boston could see temperatures drop to 20 degrees below normal, with wind chills to minus 3 degrees on Monday, as the cold air stems from a disrupted polar vortex.
- The cold pattern will persist into the weekend, with highs in the low to mid-20s across New England.
