Great question! Like you said air masses don’t form in this area, but if it did depending on the majority the air is sitting over would determine its characteristics. For the great lakes, if the majority of the air was over the lake and only a few land areas it would be classified primarily as maritime, if it were the other way around and the majority of air was over land with a little over water it would be classified as continental! Hope that helps!
Reply to IF an air mass would form over the Great Lakes would it be considered marine or continental?