1. Changes in lake ice within a six-month period between 2013 and 2014 can be seen in 18 seconds.
2. The maximum ice extent occurred on March 6, 2014 and covered 92% of the Great Lakes.
3. It was the second most extensive ice cover of the past 40 years of satellite observations.
TAG: The ice in eastern Lake Superior reached a thickness of three and a half feet, which disrupted shipping routes.
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The date and a graph showing the percent of ice cover over the Great Lakes and Lake Superior is shown on this version.", "width": 1024, "height": 576, "pixels": 589824 } } ], "sources": [], "products": [], "newer_versions": [], "older_versions": [], "alternate_versions": [] }