Check official alerts, geolocated events and the latest available tsunami bulletins.
We are not currently recording active tsunami alerts issued by the authorities we monitor. This does not mean there is no risk in every country. Always follow notices from the competent authority for your area.
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Integrated sources: NOAA/PTWC, NOAA/NTWC, JMA, DIHIDRONAV/CNAT and CAT-SEMAR. In an emergency, follow the instructions of the competent authority in your area.
Most significant tsunamis in history
World historical Top 10 researched with AI assistance and validated against institutional sources. The assessment combines documented wave height or run-up, human impact, destruction, geographic or transoceanic reach, generating cause and quality of historical evidence; it is not based on deaths alone.
| # | Date | Event | Country / territory | Historical basis |
|---|---|---|---|---|
| 1 | 2004-12-26 | Sumatra–Indian Ocean tsunami | Indonesia | Mw 9.1 earthquake; documented maximum run-up of 50.9–51 m in Sumatra; 227,899 dead or missing; effects from Indonesia to East Africa and records across the Indian, Pacific, and Atlantic Oceans. |
| 2 | 2011-03-11 | Tōhoku earthquake tsunami | Japan | Approximately Mw 9.0–9.1 earthquake; maximum measured run-up of 40.1 m in Iwate; extensive devastation in Japan, observations throughout the Pacific, more than 18,000 dead or missing, and catastrophic damage including the Fukushima crisis. |
| 3 | 1960-05-22 | Great Chilean earthquake tsunami | Chile | Mw 9.5 earthquake, the largest instrumentally recorded; transoceanic tsunami causing deaths and severe damage in Chile, Hawaii, Japan, the Philippines, and the U.S. West Coast; basin-wide Pacific observations. |
| 4 | 1964-03-27 | Great Alaska earthquake tsunami | United States | Mw 9.2 earthquake; local and regional tsunami involving inundation and landslides, damage from Alaska to California and Oregon, 131 combined earthquake-and-tsunami fatalities, and local run-ups of approximately 20 m or more. |
| 5 | 1883-08-27 | Krakatau volcanic tsunami | Indonesia | Volcanic collapse and explosion; waves of approximately 30–41 m and maximum run-up near 40 m in parts of Java and Sumatra; about 36,000 deaths, mainly from the tsunami; atmospheric effects recorded worldwide. |
| 6 | 1755-11-01 | Lisbon earthquake tsunami | Portugal | Great Atlantic earthquake; run-up of approximately 12 m in Lisbon and up to about 30 m at Lagos according to historical records; damage and casualties from Portugal and Spain to Morocco, Atlantic islands, Ireland, Britain, and the Caribbean. |
| 7 | 1896-06-15 | Meiji Sanriku tsunami | Japan | Tsunami earthquake with estimated seismic magnitude approximately 7.6–8.3; documented run-up up to 38.2 m; approximately 21,959–27,122 dead or missing and severe destruction along the Sanriku coast. |
| 8 | 1792-05-21 | Shimabara–Unzen tsunami | Japan | Mayuyama collapse during Unzen activity; wave reaching approximately 55 m in Ariake Bay; about 14,000–15,000 deaths and devastation in Shimabara, Higo, and Amakusa. |
| 9 | 1771-04-24 | Great Meiwa–Yaeyama tsunami | Japan | Earthquake and possible submarine landslide; documented maximum run-up of approximately 85.4 m; about 12,000–13,486 deaths and catastrophic destruction in Yaeyama and Miyako. |
| 10 | 1958-07-09 | Lituya Bay landslide tsunami | United States | Approximately Mw 7.8–7.9 earthquake triggering a rockslide; maximum run-up of 524–530 m, the largest documented; approximately 30 m wave within the bay, two boats sunk, and two deaths. |
World historical Top 10 updated through AI-assisted research and validated against institutional sources. An incomplete update never replaces this set.
Is there a tsunami warning today?
People searching for tsunami alerts today usually want to know whether an official warning is active and which areas may be affected. EarthSentra gathers official tsunami bulletins and recent events so you can check current warnings without confusing a precautionary advisory with a confirmed damaging tsunami.
Where is there a tsunami risk right now?
Tsunami risk depends on the source of the event, its magnitude, depth, location and the assessment made by official warning centers. A strong undersea earthquake may trigger a tsunami evaluation, but not every offshore earthquake produces dangerous waves. Always check the official status shown on the page.
How to interpret a tsunami alert
Warnings and advisories can change quickly as new sea-level and seismic measurements arrive. If your area is included in an official alert, follow instructions from local emergency authorities. You can also check earthquakes today and use the country directory for regional monitoring pages.
EarthSentra does not issue its own tsunami warnings; it organizes information from official sources.
Tsunami alerts by country
Check tsunami monitoring for China, Chile, Peru, Colombia, Ecuador and El Salvador.