Choose alerts you can understand

A disaster-alert application is most useful when it is configured before an emergency. The Japan National Tourism Organization describes the Safety tips application and its multilingual earthquake, tsunami and weather alerts. Read its current language and device information, then follow the official download route. Residents as well as visitors can use the supporting information described on the official page.

Check the application’s location and notification settings on your own device. Make sure important alerts are not silently blocked by an operating-system setting. Learn how to find the relevant area when travelling, and recognize that an application is one information channel rather than a guarantee that every alert will reach you.

Create an offline information sheet

Write the Japanese address of your home and another place you regularly use, such as a school or workplace. Add household contacts, essential medical information you choose to carry and the official local disaster-information source. Keep the sheet somewhere you can reach without unlocking a phone or relying on mobile data.

Ask your municipality about the evacuation information relevant to your address and check the route in advance. Record any accessibility or support arrangements your household needs. If you use an online map, also keep a simple offline reference. An empty battery, an unavailable network or a damaged route can make a phone-only plan difficult to use.

Practice and maintain the setup

Show household members how to find the alerts and the contact sheet. Discuss what to do if you are separated and which person outside the affected area you can contact. Do not assume that everyone understands the same language, map symbols or meeting-place description. A short practice can reveal those gaps without the pressure of a real event.

Review the setup after changing phones, moving house or updating the operating system. Check that contact information and chosen locations remain correct. During a disaster, compare an alert’s timestamp and area with current municipal instructions and surrounding conditions. Follow official guidance promptly and avoid forwarding unverified claims. Prepared alerts and an offline sheet support decisions; they do not replace the need to recognize immediate danger and seek appropriate emergency assistance.