Lake-Effect Snow Season

I’ve watching lake-effect snow bands set up on the eastern end of Lake Erie today.

Lake-effect snow is the product of a warm lake and cold air. Because water cools more slowly than the air, this condition sets up starting in late fall and early winter.

It is essentially a very unstable set-up: the air in contact with the lake picks up a tremendous amount of heat energy and humidity below a winter-cold mass of air above.

The result, assuming temperatures support snow, is narrow and extremely efficient band of snow.

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