This is NOT Kumamoto but I'm posting this video here because the issue of how to interpret evacuation notices is one that has come up here several times. As I have written before, developments such as this one (north of Tokyo today) are extremely difficult to predict accurately so warnings frequently wind up being premature and ultimately unnecessary or, sadly, too little too late. If you are in an area of Kumamoto that is vulnerable in any way, make sure you have a reliable way to get information about evacuation recommendations and err on the side of caution.
https://www.youtube.com/watch?v=ad70oVi742s
-- Kirk