Japan is not only the country hit most frequently by a large margin, it is also the country hit by the strongest natural disasters.
According to [2] the US has the most severe weather in the world, which is interesting. I've certainly experienced some of it, tornadoes are horrifying.
I had a crazy experience in Oklahoma City once where I ran out of my hotel because of an earthquake only to see two funnels on the ground coming towards me.
[1] https://en.wikipedia.org/wiki/List_of_countries_by_natural_d...
[2] https://www.usatoday.com/story/weather/2013/05/16/extreme-we...