Kumamoto should do what Hiroshima has done: Put evacuation notices on an easy to understand map. Right now, Hiroshima only has a couple of places where people are being told to get ready to evacuate (the blue suitcases). If there were evacuation recommendations (a green ! mark) or evacuation orders (a red !!! mark) they would appear on the map in the same way. Even if one couldn’t read Japanese, one could easily learn to check for any of the three marks in your area and then take appropriate action.
http://www.bousai.pref.hiroshima.jp/hdis/sizi/
– This rant has been brought to you by Kirk