Hi Zishinmimi. If I could view your site in the Japanese language instead of Microsoft Japanese I could translate it.

I lived in Japan for a little more then 10 years in and around the Tokyo area. I was in Niigata when the city was struck by an M>7.5 earthquake in June of 1964.

The 1940 M>7.5 earthquake off the Coast of Shakotan Peninsula (Syakotan Hanto) and the 1964 Niigata M>7.5 earthquake were earthquakes that occurred on reverse faults with compression in an east-west direction. This is the same type of earthquake expected in the Tokai area.

Where in Japan do you live? I see your site is about warnings so I take it that this would mean earthquake warnings. Do you use other data as well as “ear tones”? Take Care…Don in creepy town