Tsunami
Yet, the most expensive tsunami ever was the 2011 Tōhoku earthquake and tsunami or Great Sendai Earthquake . It is said to have cost the Japanese government around $2200 billion USD, which is equivalent to about 12 trillion yen. It went a huge distance in  inland and mostly effected  Tōhoku region (northeastern Honshu). and it was the 4th largest tsunami in history.