A massive arctic air mass will push into the United States next week, resultingin temperature departures as much as 15 to 20 degrees below normal from theGreat Plains to the Eastern Seaboard. Across the northern Plains and UpperMidwest, it will drop to 30 below during the overnight hours. Minneapolis maysimply stay below zero for a couple of days, and Chicago may have temperaturesno higher than the single digits.An unknown at this point is a possible storm that could have impacts from thewestern Plains to the East Coast. The tentative track and timing of the stormare shown. We'll know more about this threat as time goes on. For now, let'sjust say it could turn into a significant snow-producer across the South andEast.
Story By AccuWeather.com Senior Meteorologist John Kocet.
