Got to love Accuweather. https://www.accuweather.com/en/winter-weather/perilous-blizzard-to-thrash-midwest-followed-by-dangerous-flash-freeze/1611131
The storm is on track to deliver 8-12 inches of snow to downtown Chicago, with some neighborhoods possibly facing a scenario in which 12-18 inches may pile up. Blowing and drifting snow on top of that will result in snowdrifts several feet high that can cause vehicles to be stuck on highways.