Lake Effect Snow (LES) is very common across the Great Lakes region during the late fall and winter. LES occurs when cold air, often originating from Canada, moves across the open waters of the Great Lakes.
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This storm was the result of a phenomenon called “lake effect snow.” It's one of the main reasons why areas near big lakes, like the Great Lakes, get such remarkable snowstorms. Such storms usually occur between November and February, not October.
Lake-effect snow can form on small lakes just as it does in the Great Lakes. Salt Lake City, Fort Worth and Carson City, Nevada have all had bouts of snow from lakes. Inland lake-effect and ocean-effect doesn't just occur in the United States.