EDIT: NWS forecast office's are suddenly backing off snow totals. This graphic is now void and no new graphic will be issued today.
There will be two sides to this: Snow and Ice. We have outlined the WI/IL/IA border as a potential area where 10-12 inch totals may be sighted. This map is based off of ratios that may be just a tad higher than what we will see, so don't hold your breath for the 10-12 inches- that is merely a heads up. As the system progresses east I expect storm totals to be enhanced by some lake effect snow by Lake Michigan and a Lake Erie/Lake Ontario combination out in the Northeast.
For the Midwest i am anticipating a widespread 4-8 inches above I-80, with isolated 6-10 inches in the harder hit areas, which would be from the IA/IL/WI border point into Chicago. Icing will play a big and unfortunate role for the Midwest. I am anticipating 0.10 inches of ice to be commonplace from Central Illinois eastward into Ohio and parts of the Northeast. I did outline an area where 0.25 inches of ice may fall, but I put that there as I believe the hardest hit areas may approach that number (keyword is approach).
In the Northeast, there may be some icing close to the coast, but for now I don't believe I have the right to insert that ice potential there, mainly because of a lack of forecasting guidance at this time. The Northeast ought to wind up with a good 1-3 inches across a lot of the region, and 3-6 inches in inland areas. An isolated 6-8 inches cannot be ruled out by the Lakes.
BIG WINNERS OF THIS STORM
I am thinking that the big winners of this storm will be primarily in East Iowa, South Wisconsin and North Illinois. Stick with me as I will mention some towns that are more on the smaller side.
Possibly Chicago's far NW suburbs
Possibly Utica, NY
('Winners' are listed from top to bottom in confidence of 'big' totals (outstanding from other regions))