A Winter Storm Warning is in effect for most of the Chicago area and Northwest Indiana Sunday and into Monday as an unseasonable snow storm could drop more than a foot of lake-effect snow in some places and create extremely hazardous driving conditions during the morning commute.
Some snowflakes are forecast to fall off-and-on during the day Sunday, but the strongest parts of the storm with the heaviest snowfall will start later in the day.
The Winter Storm Warning will be in effect through noon Monday for the entirety of Cook County, as well as eastern Will County, Kankakee County, and through 6 p.m. Monday for Lake and Porter counties in Indiana…