Any tsunami video I look at barely looks like a 20 feet wave hitting shore. But wikipedia tells me there have been dozens of 100+ feet tsunamis even in the last 10 years.
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Doesn’t work that way. Tsunamis aren’t about height. Never were. They’re instead a horizontal wave that keeps on coming over the beach or harbor, and keeps going inland. A tell tale sign is that the water moves very far out to sea, exposing mud flats you normally wouldn’t ever see. If you do, God help you! You are seriously in the wrong place, because a horizontal wave will rush inwards, and take out the entire beach!
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