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.
When they say 100 feet, it means that the wave reached 100 feet above sea level. This usually is at the point that the water loses all momentum(when everything is in gravitational potential energy), not when most of its energy is in kinetic energy moving forward.
Latest Answers