WPC
The best forcing/lift is farther north with the eastern UP, Huron/Georgian Bay, and Lake Ontario favored for heavy LES. Inversion heights climb to 10,000 ft due to as high as 1000 J/kg of instability, snowfall rates will become intense, especially downstream of Lake Ontario streamlines make the effective fetch/additional moisture from Lakes Superior and Huron overlap with long fetch over Lake Ontario directly into orographic lift of the southern Tug Hill late tonight into Monday night. Snowfall of 1.5 to 2"/hr are the mean from the 00Z HREF over this area for at least 20 hours. While the actual single-band will waiver slightly through this time, 24"+ are likely.