alt Hacker NewsApparently 2 meters is : A 2 meters (6 ft 7 in) high tsunami hit Chiba Prefecture about 2+1⁄2 hours after the quake, causing heavy damage to cities such as Asahi. (Tohoku 2011) [1]
WRT comparison with hurricane waves, I assume they carry a lot less energy than tsunami's, because they are "superficial waves" - caused by the friction of the wind on the water - whereas a tsunami wave is caused by the movement of a huge mass of mater.
[1] https://en.wikipedia.org/wiki/2011_T%C5%8Dhoku_earthquake_an...
People vastly underestimate the danger of a moving body of water in general, but especially when that water is where it isn't normally. Even a relatively tame storm surge picks up sewage, dangerous chemicals, debris, and confused wild animals.