Niantic announced that from
March 4th, 2017 until March 13th, 2017,
Kabigon will appear more frequently than normal in Pokémon Go in the
Kumamoto and
Ōita Prefectures of Japan. They also warn players to be careful playing the game in those areas as there is still a lot of localized reconstruction work continuing as a result of the
2016 Kumamoto earthquakes.
Source:
https://twitter.com/PokemonGOAppJP/status/837210891166842881