yes, this was an unusual weather pattern. A very cold Mass of Air originated in Siberia. A powerful high-pressure System in the north Pacific "drove" the cold Air over the Artic to the east of the Rockies into the Midwest of USA.
A rather unusual Weather Phenomena occurs here by the Great Lakes – Lake Effect Snow. I live near Cleveland, Ohio, on the south Shore of Lake Erie. During Winter cold Air comes to us from the Artic over the Canadian Landmass which doesn't warm it (as compared to UK where it is warmed by the Atlantic). When cold Air blows over the Great Lakes it picks up a lot of Moisture. When it hits Land the Moisture comes back down as massive amounts of Snow. I happen to live a bit west of Cleveland and due to the Shape of Lake Erie's Coastline and the typical Wind Direction in Winter, we miss much of the Lake Effect Snow. Sometimes we have 2" where just 25 Miles to the east it is 12". The rising Elevation also contributes to the Snowfall.
This Storm was blowing from the West / Southwest which meant the Air had Time to pick up Moisture the entire length of Lake Erie before reaching Hamburg, NY, which is next to Buffalo, NY. Additionally, it had a corresponding long Fetch to make larger than normal Waves. The left side of that Picture above is Lake Erie.
The BIG Problem for us is all the above Ground Power Lines as seen in the Picture above. Those in the Picture may have a 1" + diameter Coating of Ice on them. These Power Lines are also right next to tall Trees. When Branches are broken off they rip up the Power Lines. The Power Companies are doing a better Job now trimming back Trees during the summer Season. Property Owners really complain when they trim the Trees back, but really the Trees shouldn't be there at all. They just allow Trees to grow unchecked here.
Lake Erie is the shallowest of the Great Lakes. It will freeze over in a few Weeks. At that point the Lake Effect Snow can't happen anymore. It's not solid Ice. I think the Term is "Shelf Ice". It does get pushed around by the Wind and cracks into large Sheets. You would have to be crazy to think you could walk across it to Canada.