Over 120 million Americans will face extreme cold, with temperatures potentially reaching minus 40 degrees Celsius. Meteorologists warn that it will be colder than in Greenland. Due to the frigid weather,

However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is about to bring even harsher arctic blast to nearly 300 million Americans starting this weekend. Maps show where and when the cold front will arrive.

An arctic blast will send temperatures across the United States plummeting as bitterly cold air that originated in Siberia will arrive from Canada by week’s end, bringing with it dangerously cold wind chills for millions of Americans.