So I was able to find the raw data of ice concentration on Lake Erie before and during the January '14 event, which seems to be a good analogue to this one.
3 55.69
4 57.95
5 39.72
6 41.83
7 61.55
8 88.48
9 90.63
The lake managed to ice up very quickly, going from 40%- 90% coverage in just 2 days, despite the strong winds inhibiting ice formation.
The weather service wrote they expect the wave action to break ice formation enough to keep lake effect going for the duration, but I would not be surprised if they are underestimating the lakes ability to ice over. However, their forecast snow totals are in line with the '14 event, which seems reasonable, but as hopeful as I am, I doubt areas receive more than 2'.