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Great Lakes Freezing Over: Dave Eichorn's Blog

Many of the Great Lakes are freezing over. None have frozen over entirely yet, but a few are getting close: Dave Eichorn's Blog
According to NOAA’s Great Lake Environmental Research Laboratory, as of Friday, 79 percent of the Great Lakes surface water is ice covered.

Here are the numbers for ice concentration for each of the Great Lakes as of 7 p.m.:

•Lake Superior: 86.5 percent
•Lake Michigan: 64 percent
•Lake Huron 86.8 percent
•Lake Erie: 91.8 percent
•Lake Ontario: 45 percent

Superior, Michigan and Erie are all down a few percentage points from Feb. 6. Wind can break up ice, and this time of the year, as the sun gets higher in the sky, sunny days can slow up ice expansion.

On average, the Great Lakes total peak ice cover is about 51 percent. So far this year, 79 percent of the Lakes are covered. That is the most ice cover since 1996.

Typically, the Great Lakes as a whole, reach their maximum ice concentration in Mid February for the lower Great Lakes and late February for the upper Great Lakes, however, this varies from year to year.

The flow of arctic air into the U.S. is forecast to relax by the end of next week, so we may very well be approaching peak ice cover for the year within the next 7 days. 

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