The Ice Age and the Transformation of the Great Lakes Roughly 20,000 years ago, the landscape of North America was unrecognizable compared to today. Colossal glaciers, sometimes a mile thick ...

The northern shore of Lake Superior, Ontario, Canada. The process forming the Great Lakes began millions of years ago but wasn't completed until the last ice age, 20,000 years ago.

Great Lakes basins may have formed millions of years ago from activity deep in the Earth — long ... Since the last major ice age started 2.7 million years ago and until it ended about 12,000 ...

The Great Lakes reached their highest ice coverage (52.23%) since February 2022. Lake Superior was the last of the Great Lakes to become ice-free on May 11, 2025.

Great Lakes ice coverage reached an historic low in 2024, the NOAA said. Coverage reached 16.025 in January 2024, fell to 2.94% in early February and briefly rebounded to 12.18% before falling to ...

Since last Saturday, January 18th, the Great Lakes Basin has seen a 14.63% jump in ice coverage from 8.58% to 23.21% in just 6 days. Of the lakes, Lake Erie’s ice cover has gone up by 58.48% ...

Great Lakes ice coverage currently stands at 9.13%, NOAA said Thursday. Lake Erie continues to have the most ice, at 14.98% coverage, while Lake Huron is at 14.60%.

Peak ice coverage for the Great Lakes happens in late February/early March. wxmi. The next couple of weeks feature medium confidence of above average temperatures in the region for days 6-10 ...

What years did the Great Lakes have the least ice? In 2002, the Great Lakes basin had just 11.9% ice coverage, NOAA said. In 2012, Lake Superior had 8.5% coverage.