CoastWatch Reporting System Website


The Sea Grant CoastWatch Website provides the latest available information on Great Lakes surface water temperatures. Sea Grant CoastWatch captures National Oceanic and Atmospheric Administration CoastWatch data from satellites that pass over the lakes four times daily, then presents the latest good images to viewers as isothermic maps. CoastWatch site visitors can select from five lakewide, 16 regional and 42 port maps of Lakes Superior, Michigan, Huron, Erie, and Ontario.


Great Lakes researchers, recreational visitors, and fishermen.


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