Kirk here with a minor earthquake report. This quake didn’t cause any damage and so normally I wouldn’t mention it. But, with slopes in Kumamoto being so soggy, the possibility of earthquakes is something to think about. Personally, I would avoid driving on roads that go through mountainous areas until things dry up. Stay safe!
https://www.jma.go.jp/bosai/map.html#11/32.732/130.605/&elem=int&contents=earthquake_map&lang=en