Note the presence of a Rex Block in the West. A Rex Block involves high pressure in the Pacific Northwest and low pressure in the Southwest or just offshore of the region. When the Rex Block is in place, the southern jet stream amplifies, and high pressure will attempt to form in the East US in response to the increasing number of storm systems passing through the South Plains. In this forecast, the high pressure system is based in southern Canada, not the waters off of the Southeast, so a move into the Ohio Valley is not as likely as you may think.
For those unfamiliar with the term, the Fujiwhara effect involves two cyclones that begin to orbit each other. This is not unlike the phenomenon of a binary solar system, but the two suns orbit each other rather than planets orbit the suns. If the Fujiwhara Effect does happen to evolve into this situation, I could see the Missouri system moving east northeast, and the Michigan system slightly retrograding or moving east to wait for the Missouri system to catch up.
The ECMWF Ensembles show a similar situation, but more to the north:
The ECMWF model shows snowfall as being confined to the Midwest (IL, WI, east IA, north MO) on the order of 3-6 inches. Do not use the heavy amounts in the Northeast or Ohio Valley here, that snow is for the Dec. 25-27 storm.