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Author(s): Richard Guillande

I received a tsunami alert on my smartphone. What should I do?

Source(s): Signalert Sarl
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When every minute counts, SIGNALERT helps you stay safe.

Imagine you’re on vacation—on the French Riviera, in Guadeloupe, Costa Rica, or Bali. Suddenly, a tsunami warning flashes on your phone. The message urges you to move to safety, but it might not even be in your native language. What do you do next? 

In a crisis, clear guidance and reliable information can save lives.

That’s why we built SIGNALERT—your personal tool for staying informed and prepared for natural and technological risks, wherever you are. Since 2014, SIGNALERT has empowered users to make the right decisions in critical moments. 

What does SIGNALERT offer?

  • Instant alerts: Receive official warning messages for tsunamis and other hazards, with alarms and clear instructions.
  • Interactive maps: See exposed areas, safe zones, and evacuation routes for regions like Costa Rica, Ecuador, Peru, the French Antilles, Mayotte, and Nice (France)—with more to come.
  • Your location, in real time: The app pinpoints your position and tells you when you’ve left the danger zone.
  • Standardized symbols: Refuge zones are clearly marked (e.g., a capital “R” in a black circle in France), so you know where to go.
  • Evacuation guidance: Follow recommended routes on foot—cars often lead to traffic jams and delays.
  • Behavioral guidelines: Get step-by-step instructions before, during, and after a tsunami, based on FEMA and other agencies’ best practices.
  • Multi-hazard coverage: SIGNALERT isn’t just for tsunamis. It covers 17 natural phenomena (earthquakes, cyclones, floods, wildfires, etc.) and 7 man-made events (accidents, pollution, medical needs, etc.).
  • Real-time field reports: Share and view geolocated updates from the community when disasters strike.
  • “I AM SAFE” feature: Instantly reassure loved ones by sending your status and location.
  • Custom monitoring: Set alerts for your home, workplace, or any location you care about.
  • Multi-language support: Available in English, French, Spanish, and Arabic. 

Why SIGNALERT?

  • Trusted by residents and travelers: Used in drills like UNESCO-IOC’s CARIBWAVE and by communities in vulnerable regions.
  • Official data sources: Maps and alerts are produced by national institutions and standardized by UNESCO.
  • Comprehensive coverage: Includes flood risk maps for several European countries, cyclone tracking, wildfire monitoring, and more.
  • For science lovers: Explore recent earthquakes, their location, depth, and magnitude—locally or worldwide.
  • For authorities and organizations: SIGNALERT offers web services for regional/local authorities, NGOs, and businesses to communicate with people in their area, send alerts, and share safety information. 

Download SIGNALERT today and stay one step ahead of the unexpected.
Available on iOS and Android. 
Learn more:  www.signalert.net  

Attachments

Signalert flyer PDF, 1.1 MB English

Last checked: 28 April 2026

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