When was the last time Lake Michigan frozen over?

In records dating from the middle 1800s, even in the coldest winters, Lake Michigan has never completely frozen over. It has been as much as 90 percent or more ice-covered in 1903-04, 1976-77, 1978-79, 1998-99 and 2013-14, but the lake is a massive reservoir of heat that is released only slowly into the air.



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'Pancake ice' forms on Lake Michigan in below-freezing temperatures. Pancake ice formations occur when ice sheets are broken into pieces by the wind and waves.

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Sadly, the Thames will never see another Frost Fair: due to climate change, the construction of the new London Bridge in 1831, and because the river was dredged and embanked during the Victorian era, making it too deep and swift-flowing to freeze as it once did.

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Lake Michigan is the only Great Lake to have never frozen entirely.

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Lake Superior is the world's largest freshwater lake by area (31,700 mi2 /82,100 km2). It is also the coldest and deepest of the Great Lakes, with a maximum depth of 406 meters (1,332 feet). By most measures, it is the healthiest of all the Great Lakes.

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So yeah, even if Lake Michigan ever kinda-sorta freezes over, don't try crossing it by foot or vehicle. Leave that kind of dangerous travel to the ice balls.

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As of February 14, 2023, ice covered only 6.6 percent of the five freshwater lakes, which is significantly less than the 35-40 percent ice cover that is typical for mid-February, according to data published by the National Oceanic and Atmospheric Administration's (NOAA) Great Lakes Environmental Research Laboratory ( ...

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Most lakes and ponds don't completely freeze because the ice (and eventually snow) on the surface acts to insulate the water below. Our winters aren't long or cold enough to completely freeze most local water bodies. This process of lakes turning over is crtically important to the life in the lake.

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This can be dangerous as you might think you're walking on solid ground, when actually you're out over the water. Due to the layered nature of shelf ice, even if you're out over four feet of water, if you were to fall through a thin spot in the ice, you could find yourself trapped in an ice cavern.

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Great Lakes that have completely frozen include Lake Superior, Lake Huron, Lake Erie, and Lake Ontario. Lake Michigan is the only Great Lake to have never frozen entirely.

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In records dating from the middle 1800s, even in the coldest winters, Lake Michigan has never completely frozen over. It has been as much as 90 percent or more ice-covered in 1903-04, 1976-77, 1978-79, 1998-99 and 2013-14, but the lake is a massive reservoir of heat that is released only slowly into the air.

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While there have been past “sightings,” most have turned out to be pranks or misidentifications. The reality is that the largest of the Great Lakes (Lake Superior and Michigan) are extremely deep lakes that are too cold for sharks.

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Lake Michigan in particular is the roughest of the Great Lakes, and poses a major risk to those thinking of taking a dip.

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Health risks Winter swimming can be dangerous to people who are not used to swimming in very cold water. After immersion in cold water the cold shock response will occur, causing an uncontrollable gasp for air. This is followed by hyperventilation, a longer period of more rapid breathing.

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The Aral Sea was located in Central Asia between Kazakhstan and Uzbekistan. With an area of 68,000 km2, it was once the 4th largest lake in the world. Its name means “Sea of Islands”, as over a thousand islands were once dotted across its surface.

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The Great Salt Lake is losing so much water that it will be completely gone within five years. The loss of this lake would have deadly consequences to both humans and ecosystems near it.

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The 520-metre Thames Barrier has protected Londoners from more than 100 tidal floods since the early 1980s.

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