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Earthquake and tsunami alerts are now Time Sensitive notifications, so they can come through Focus and Sleep modes. You can turn this off in Settings > Notifications.
Japan Disaster Guide helps travelers and residents stay safe during disasters in Japan — in English, 日本語, 简体中文, 繁體中文, 한국어, ภาษาไทย and Tiếng Việt. WHAT YOU GET Nationwide evacuation shelters on a map, with directions (official GSI data) Real-time weather warnings from the Japan Meteorological Agency for your area Step-by-step action guides for each disaster, with voice read-aloud in your language Emergency cards — show your screen to communicate with Japanese speakers Works offline — guides and emergency cards are available without a connection Saved places — watch your hotel and planned spots, with alerts for each place and offline shelter packs Priority alerts — real-time push notifications when a new warning is issued for areas you watch TRAVELER UNLOCK (optional one-time purchase) Live safety sharing: send a link so family or travel companions can see your safety status in a browser — no app required. You control when it starts and stops; the link is view-only. Also unlocks up to 5 saved places. PRIVACY FIRST No account or sign-up. No ads or tracking. Location is used on your device to find nearby shelters. When you choose to share, only a coarse (~1 km) location is shown, and only while you enable it. Your emergency info (blood type, allergies) stays on your device. Japan Disaster Guide is a supplementary tool. In an emergency, always follow official instructions from local authorities and emergency services.