The winter storm over the weekend left a narrow swath of significant snowfall across the central Midwest. The heaviest amounts of 5 or more inches (blue) extended from the High Plains through Iowa, northern Illinois, southern Wisconsin, northern Indiana, and Michigan.
Here is a close-up of Illinois. The largest amounts are along the Illinois-Wisconsin border. Amounts of 5 inches or more (blue) were common across the northern third of the state. The largest snowfall totals in Illinois was 17.1 inches at Roscoe (Winnebago Co.) followed closely by 16.9 inches in Mundelein (Lake Co.). It was the second largest November snowfall for both Chicago (11.2 inches) and Rockford (8.8 inches). See graphics below created by NWS Chicago.
Snowfall amounts tapered off southward, decreasing rapidly from 5 to 1 inches (green), and south of Interstate 70 was essentially snow-free.