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How the depth and breadth of the Great Lakes influence the amount of snowfall

For many near-lake locales, dendritic deluges off the Great Lakes are more common during the first half of winter. Ice coverage cuts off the water source essential for the water-snow cycle. Geography, size and depth of the lakes play important roles in lake-effect snow. Shallow water allows rapid mixed cooling to the freezing point of upper lake layers. Peak time for lake-effect snow formation is before significant lake freezing, which occurs on Erie with greatest extent and impact. GLERL has studied the trends and impacts of lake ice over the past several decades.