Kirk here with more rain news. Evacuations have been called for in several parts of Kumamoto. By “evacuations have been called for” I mean Level 4. There are many more places at Level 3 (get ready to evacuate). To get a more-or-less comprehensive list of calls for evacuation, I recommend
https://crisis.yahoo.co.jp/evacuation/43/
This site is in Japanese but if you can use the translate extension on the Chrome browser
https://chrome.google.com/webstore/detail/google-translate/aapbdbdomjkkjkaonfhkkikfgjllcleb?hl=en
You can not only view an English translation but also check the original Japanese by placing your cursor over the translation, you can check the original Japanese. Most of the translation is pretty good but occasionally a place name is rendered incorrectly so this can be helpful, especially if you or someone nearby is able to make sense of the Japanese when the English doesn’t sound right.
For example, 錦町 in Kumagun has been rendered Kamo-cho, instead of Nishiki-machi.
Be safe!