A displaced polar vortex in Canada is set to unleash three waves of Arctic air through mid-December, "delivering the coldest conditions of the season so far," forecasters at AccuWeather said.

"The repeated blasts, the first of which is now in place across the Midwest and Northeast, will drive up energy demand and create hazardous travel from multiple rounds for accumulating snow from the Plains to the Northeast,” the outlet said in an advisory shared with Newsweek on Friday.

The series of Arctic outbreaks, of which at least three are expected, will likely surge south out of Canada into the Plains, Midwest and Northeast through mid-month, AccuWeather said, adding that the first had been moving south and east through Thursday night.

Two more are expected in the coming weeks as the pola

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