Editor's note: For the latest on the winter storm, click here.
Arctic air blasted the Plains Sunday, as forecasters warned an "intense cyclone" system would threaten parts of the Midwest and Northeastern U.S. with heavy snow and blizzard conditions this week, while New England faces freezing rain.
The big picture: The National Weather Service said other potential hazards for these areas over the next 48 hours include "widespread blustery winds to locally damaging winds," as a "potent winter storm" producing frigid temperatures sweeps across from the upper Midwest to the Great Lakes Sunday into Monday.
