How big can the waves get on Lake Michigan?

But what is the tallest wave ever recorded on Lake Michigan? Records show that the highest wave recorded reached 23 feet. It came in September 2011 and was recorded by a buoy that has measured waves since 1981. The largest wave was taller than some houses!



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Meteotsunamis are frequently observed in the Great Lakes, averaging 106 events per year. Examples of destructive Great Lakes meteotsunamis include: In 1929, a retreating 20 foot wave pulled ten people to their deaths at in Lake Michigan at Grand Haven, MI.

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While the terminology tsunami does not technically apply in the Great Lakes (it is an ocean phenomenon), a large, rogue wave or set of waves crashing along our freshwater shores are not unheard of. In 2013, just such a wave occurred along one Lake Erie beach, sweeping several people up and taking them out to sea.

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But what is the tallest wave ever recorded on Lake Michigan? Records show that the highest wave recorded reached 23 feet. It came in September 2011 and was recorded by a buoy that has measured waves since 1981. The largest wave was taller than some houses!

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The lakes have more coastline than the East and West coasts combined! While ocean waves are created by distant storm systems, waves on the Great Lakes are formed by localized winds.

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The most vivid historical meteotsunami on record in the Lake Michigan occurred in 1954, when a squall line-induced wave struck Chicago in Lake Michigan. The coast was inundated up to 50 meters inland and unexpectedly swept many fishermen off of the Montrose Harbor piers, killing seven.

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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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In April 2018, two meteotsunamis formed on Lake Michigan in the same day. Other meteotsunamis on the Great Lakes have risen up to 7, 10 and 12 feet in the last 31 years. The largest meteotsunami was recorded in Croatia in 1978.

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