THOUSANDS OF YEARS AGO

We have to keep in mind that big impacts are tremendously more powerful than earthquakes. Even M9+ quakes like Japan and Indonesia. The geometry of the wave would most likely be different as well, because it is essentially a "splash" instead of a lifted slab of water. We really don't know how they'd behave. The…

If you encounter a tsunami that is 50 feet high in the deep ocean, someone on the coast is SCREWED.