Minnesota's lake ice cover has declined by 10 to 14 days over 50 years due to warmer winters.

Minnesota lakes have seen ice cover decline by 10 to 14 days over the past 50 years, with ice forming later and melting earlier. Warmer winters, particularly a 6.4-degree increase in Duluth since 1970, are contributing factors. This change could lead to more lake-effect snow, warmer water temperatures, and harmful algae blooms. Researchers are beginning to study the impacts and include social scientists to understand societal effects.

November 29, 2024
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