First of all, the image just indicates that this post has to do with natural disasters; as far as I know, there isn’t anything to worry about at the moment.

Here’s a quote from the article that relates directly to Kumamoto:

— start quote — With this said, six prefectures, specifically Yamagata, Gunma, Toyama, Wakayama, Yamaguchi, Kumamoto, and Okinawa, appear not to have any foreign-language materials at the prefectural level. This lack of foreign-language materials is not directly related to the lack of foreign residents in the prefectures. Of these seven prefectures, ranking-wise, as a reflection of percentage of foreign residents versus Japanese citizens as of 2010 data, Toyama is the highest at 20th (at 1.006 percent) and Kumamoto is the lowest at 0.419 percent. — end quote —

This Facebook page is usually pretty quiet – in most cases, just a few hundred pairs of eyeballs for each post. However, when a typhoon approaches or Aso is erupting, this page suddenly gets a lot more traffic. I think that’s due in part to the lack of public sources in English that the article refers to.

http://www.japantimes.co.jp/opinion/2015/03/05/commentary/japan-commentary/disaster-information-vital-for-foreign-residents/