The More You Know: Lake Effect Snow


Definition: snow falling on the lee side of a lake, generated by cold dry air passing over warmer water, especially in the Great Lakes region.

In PA, Lake Effect snow can bring heavy accumulations in the Western side of the state, particularly in Erie and areas closest to the lake. In Central PA, the winds have to be awfully strong for us to see some lake effect snow. It usually comes in the form of snow showers occasionally resulting in a light dusting of snow.

  • This weekend is the first we’ll see of this this season.
  • When/If the lake is frozen over, then lake effect snow is no longer possible.

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