An Arctic cold front is poised to sweep across parts of the United States, bringing with it record-breaking low temperatures and dangerous wind chills that are expected to persist throughout the coming week, meteorologists say.
This impending cold snap marks the tenth time this winter that the polar vortex has extended southward, according to Judah Cohen, seasonal forecast director at Atmospheric and Environmental Research. “In a normal winter, it happens maybe two or three times,” Cohen said.
