Kirk here with some information about evacuation sites. Kumamoto Prefecture now shows evacuation levels visually on a map. The page can be switched to English and also shows the location of evacuation centers. As I wrote before, even if you live in an area where evacuation is recommended, whether your not you should actually go to an evacuation center may depend a good deal on the characteristics of the particular location or neighborhood you are in. Still, I think this map should be useful if you’re wondering whether or not your particular area is safe.

https://portal.bousai.pref.kumamoto.jp/