App Guide
Tsunami Alerts
Tsunami Warning Alerts
When an official tsunami warning is issued, every second matters. Tsunami Shield monitors authoritative sources 24/7 and delivers a critical alert directly to your device the moment a threat is verified — bypassing silent mode and Do Not Disturb so you never miss it.
Video coming soon
What it does
- Breaks through silent mode and Do Not Disturb — verified critical warnings force sound and vibration push notification so you're alerted day or night, no matter how your phone is set.
- Sourced from official agencies including NOAA, USGS, GeoNet, and GDACS — our servers aggregate data 24/7 and only send a critical alert once a threat is verified, reducing false alarms.
- Covers every location you care about — your home, family members' addresses, travel destinations, and any countries you're monitoring, all at once.
- An urgent red banner appears at the top of the app the instant an Active Tsunami Warning is issued — tap it for full details in seconds.
- Available on iOS and Android — the same life-saving alerting features work on both platforms.