Tsunami Watch App Icon

Your Coastal Guardian

Real-time tsunami alerts from official agencies, delivered to your phone. Stay alert, stay safe — wherever you are on the coast.

Coming soon on App Store & Google Play

Everything you need to stay safe

Tsunami Watch combines official data, powerful notifications, and a clear interface — so you always know what's happening.

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Real-Time Push Alerts

Receive immediate push notifications for tsunami warnings, advisories, and watches — even while your phone is locked or you're asleep.

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Official Data Sources

All bulletins are sourced directly from official meteorological and emergency management agencies. No rumors, no delays.

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Interactive Threat Map

Visualize active tsunami threats on a live map. See affected zones, wave arrival times, and your proximity to danger at a glance.

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Watched Regions

Pin the coastal areas that matter most to you — your home, family, frequent travel destinations — and get targeted alerts for each.

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Privacy First

Your location never leaves your device. We collect only the minimum data needed to run the app — no ads, no data selling, ever.

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Global Coverage

Monitors coastlines across the Americas, Pacific Rim, and beyond — from Alaska to the Philippines, from Canada to Australia.

Why Tsunami Watch?

I spent the majority of a decade living in the Philippines, a stone's throw away from the Pacific Ocean. The Philippine Trench follows the east coast and is the source of many earthquakes throughout each year.

December 4th, 2023 at 10:37 PM, a 7.6 magnitude earthquake struck 60 miles from where I lived. I felt the quake and immediately started monitoring Tsunami.gov to find out where the earthquake was and if a tsunami warning would be issued.

After approximately 10 minutes, I saw the tsunami threat appear on Tsunami.gov. I immediately herded my family out the door to head for higher ground. We sounded the alarm throughout the neighborhood, then headed for the nearest peak.

Fortunately, a damaging tsunami was not generated by this quake.

But what if the quake had been far enough away that I wouldn't have felt it? What if it had sent a tsunami? I would have been sleeping when the waves came and likely would not have survived.

My thoughts went to the 2004 Indian Ocean Tsunami, which killed approximately 230,000 people and left millions homeless. The tsunami took between 15 minutes and 7 hours to reach affected coastlines. I realized I needed a system to provide tsunami alerts as quickly as possible — capable of waking me from a deep sleep. How many lives could have been saved in 2004 had a system like Tsunami Watch been available?

Thus, the concept of Tsunami Watch was born. It took two years, but finally the app took form. I feel great comfort having this app in my pocket, knowing it will alert me for any tsunami threat issued in my region, providing the information I need to keep my family safe.

I hope you find Tsunami Watch to be a valuable tool in your preparedness efforts and that you enjoy the comfort which comes with knowing that Tsunami Watch is on the job.

Supported regions

Monitoring official bulletins across the world's most tsunami-vulnerable coastlines.

🇺🇸 United States

  • Lower 48 states — both coasts
  • Alaska
  • Hawaii
  • Pacific Ocean territories (Guam, Northern Marianas, American Samoa)
  • Caribbean territories (Puerto Rico, US Virgin Islands)

🇨🇦 Canada

  • West coast (British Columbia)
  • East coast (Atlantic provinces)

🌎 Central & South America

  • Gulf of Mexico and Caribbean coasts
  • Pacific Ocean coasts
  • Atlantic coasts

🌏 Pacific Rim

  • Russia, China, Japan, South Korea
  • Philippines, Indonesia, Malaysia
  • Australia & New Zealand
  • Other Pacific Ocean bordering nations

Don't wait for the next alert

Tsunami Watch will be available soon on major app stores. Sign up to be notified at launch.

Notify Me at Launch