Chicago faces biggest snowstorm of season

Salt was in high demand across the Chicago area as the season's biggest snowstorm was anticipated to drop multiple inches of snow on Wednesday.
A winter weather advisory will be in effect for some areas of Illinois and northwest Indiana from 9 a.m. Wednesday to 3 a.m.
With a winter storm coming, schools in the Chicago area have announced closures or shifts to E-learning today.
Snow was already falling in parts of the Chicago area Wednesday morning, but when can you expect the heaviest band and how long will it fall?