This website provides international tourists in Japan with information about safe travel.
Useful tips to protect yourself from an disaster.
This push-enabled app pushes alerts about earthquake early warnings, tsunami warnings, and other weather warnings within Japan in English, Japanese, Hangul, Traditional Chinese, Simplified Chinese, Vietnamese, Spanish, Portuguese, Thai, Indonesian, Tagalog, Nepali, Khmer, Burmese, and Mongolian.
https://www.jnto.go.jp/safety-tips/eng/
The App “Safety tips”
“Safety tips”: the push-enabled information alert app for foreign touris.