Tsunamis in the oceans are often triggered by earthquakes and volcanic eruptions. But scientists say there’s a kind of tsunami that’s also a common occurrence on the Great Lakes.
These waves aren’t nearly as big as the ones on the oceans, but they can be deadly.
One reported to be 10 feet tall hit a Chicago pier in 1954 and seven people drowned.
Here's a meteorological model of that event:
Adam Bechle is a researcher at the University of Wisconsin. He says tsunamis on the Great Lakes are not so different from the ones in the ocean.