Likely, it was due to an event that happened eight days earlier,
on March 11 of that year: the Tōhoku earthquake and tsunami, which registered 9.1 on the Richter scale;
Haikyo are particularly common in Japan because of its rapid industrialization(e.g., Hashima Island), damage
during World War II, the 1980s real estate bubble, and the 2011 Tōhoku earthquake and tsunami.
In the Tōhoku and Hokkaidō domains,
where rice could not be grown, the economy was still measured in terms of koku, with other crops and produce converted to their equivalent value in terms of rice.