Above, 6 hours later, the deepening low appears to be pulling moisture from the Gulf of Mexico, thus enhancing snowfall totals in the Southern Great Lakes.
Above, another 6 hours further, the storm begins to what may be collapsing, and the rain/snow line pushes up. However, most areas remain in an area of snow.
Above, still 6 hours further, the storm becomes defined in the Ohio Valley, bringing rain with it. Still, back in the Midwest, a band of heavy snow is thought to be occurring in North Illinois, with widespread light to moderate snow over the entire Midwest.
Finally, in the final 6 hours, the low moves off. The Midwest remains in the snow, and it slowly decreases in intensity throughout the next 18-24 hours.
Another analysis will be posted next.