Read the full story at Gizmodo. See also the Prairie Research Institute Coastal Management Program fact sheet on the phenomenon.
On April 13, 2018, a huge swell of water broke on the eastern shore of Lake Michigan. It was a tsunami, one far from any fault line typically associated with the ginormous waves. This was a meteotsunami, a wall of water forged from the air conditions above it.
On that Friday the 13th, the lakefront was still chilly and thus not heavily populated, so the tsunami caused no injuries and only minor property damage. But its occurrence gave scientists with NOAA’s Great Lake Environmental Research Laboratory a unique opportunity to study the phenomenon and better understand how to predict these waves. Their research is published in the journal Natural Hazards.