Polar vortex brings wind chills as low as minus 20 to Chicago region

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Polar vortex brings wind chills as low as minus 20 to Chicago region

Bitter cold temperatures are expected to continue throughout the week in Chicago, with wind chills plunging to minus 20, the National Weather Service said.A cold weather advisory is in effect until noon Tuesday, accompanied by winds up to 15 mph; winds will subside as the day progresses. Tuesday's high temp will be 12 degrees, and the low will be 2, with wind chills ranging between minus 15 and minus 25. “Even with [the wind letting up], we’re l…