Lake Superior Water Temperature 3 Degrees Above Historic Average in October

In late October, NOAA reported that Lake Superior’s water temperature was nearly three degrees Celsius above the historic average, reaching 11.6°C on October 20, the second highest recorded for that date. This unusually warm weather has implications for ecosystems, potentially promoting algae blooms. Researchers like Jay Austin emphasize that rising air temperatures lead to slower cooling of the lake, while Margueritte Xenopoulos highlights the need for more winter research to assess future impacts on water safety for millions relying on the Great Lakes.

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