Lake Superior Ice, at More Than 90 Percent, Moves with the Wind

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Lake Superior Ice Cover: Feb. 19, 2014

NASA/MODIS

Lake Superior Ice Cover: Feb. 19, 2014

Winds out of the south pushed the enormous sheets of ice covering Lake Superior.

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Lake Superior Ice Cover: Feb. 16, 2014

NASA/MODIS

Lake Superior Ice Cover: Feb. 16, 2014

A shift in the winds this week pushed the massive sheets of ice on Lake Superior to the northeast, opening up the south shore. Over the weekend, the ice was holding fast to all but the northeastern shore.

The concentration of ice on Lake Superior remains at more than 90 percent.