As Illinoisans return to the office after the holiday season, their Monday blues might be further magnified by lake-effect snow on the tail end of a major, disruptive snowstorm that slammed the central United States and by below-normal temperatures later in the week.

A major snowstorm will move across the Central Plains this weekend, bringing heavy snow, ice and potentially hazardous travel conditions to multiple Midwest states, including Illinois. But when exactly is it set to arrive,