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Lake Superior Full Lake View

Lake Superior Full Lake View

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Coastwatch users:
We are experiencing technical difficulties affecting the ability of the water temperature contour maps to update. We are working to resolve the issue and apologize for any inconvenience.
Surface water temperatures, as well as other real-time and forecasted physical processes of the Great Lakes, can be accessed through NOAA's Great Lakes Coastal Forecasting System (

Most questions can be answered by your Sea Grant Agent or on our CoastWatch Help Pages. Please send comments or bug reports to Please include the name of the location or file that's giving you trouble, as well as the type of software you are running. This is a cooperative project between the NOAA CoastWatch Great Lakes Regional Node located at the NOAA Great Lakes Environmental Research Laboratory in Ann Arbor and the Sea Grant Network.
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