Great Lakes Ice

Comparison of ice coverage since 1980 for Jan 22nd each year from Environment Canada (essentially the National Weather Service of Canada)

So our current Great Lakes ice coverage is more than double the median value since 1980.  

The image below (from Environment Canada) shows the current year weekly ice coverage for all of the Great Lakes versus the median value (green line) since 1980.  You'll notice that we are more than double the median value for the week around Jan 22nd, and that the current value is actually about 20% higher than the typical peak of ice coverage that occurs around March 12th each year.


The following is a chart (from Environment Canada) shows the departure from normal ice cover.

The MODIS polar orbiter satellite with 250 meter resolution shows the Ice along the shore of Lake Michigan as of January 23 2014. Clouds are seen over the open waters of the lake.



Return to News Archive is the U.S. government's official web portal to all federal, state and local government web resources and services.