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This satellite photo from Friday, Nov. 21, 2014 shows ice starting to form on Saginaw Bay.

(MODIS- University of Wisconsin)

Ice is already starting to develop on Michigan's Great Lakes. This is the earliest ice on some of the Great Lakes in at least 40 years.

According to the Great Lakes Environmental Research Laboratory, on November 20, 2014, three of Michigan's Great Lakes had ice starting to form. Lake Superior and Lake Michigan were one-half percent ice covered, while Lake Huron had one percent ice. Lake Erie was not reporting any ice as of Nov. 20, 2014.

Decent early season ice coverage records date back to 1973. Last Friday was the earliest date that all three Great Lakes already had ice since the better reporting of early season ice began.

Lake Superior actually had ice forming on November 15th of this year. That is the earliest ice on Lake Superior in the good data set.

Lakes Superior, Michigan and Huron had ice 10 days earlier this year than last year.

Lake Superior only had five and a half months without any ice on the lake.

Here's what Lake Michigan looked like in February 2014.

Lake Michigan ice and sunset in February 2014 21 Gallery: Lake Michigan ice and sunset in February 2014

MLive Chief Meteorologist Mark Torregrossa has been forecasting Michigan weather for more than 20 years. He's been chief meteorologist at three television news stations in Michigan, and he's an avid gardener and hunter. Email him at mtorregr@mlive.com and find him on Facebook at facebook.com/mark.torregrossa and Twitter @weathermanmark