Tsunami Warnings in Tonga
Tsunami Warnings for Tonga (Polynesia) come from Tonga Meteorological Service, National Emergency Management Office. This page explains what these warnings mean, which authority publishes them, and how to check the current status for Nuku'alofa.
Check live tsunami status for Nuku'alofaBrowse all warnings
At a glance
- countryTonga · Oceania
- reference cityNuku'alofa (-21.14, -175.2)
- risk profilevolcano, tsunami, storm, flood, coastal, earthquake, landslide
What counts as a tsunami warnings
Tsunami warnings are issued by regional warning centres after a large undersea earthquake, volcanic eruption or landslide. A warning means waves are expected; the first wave is often not the largest, and wave arrival times are published per coastal segment. Natural warning signs - strong shaking, a sudden sea retreat, a loud roar - mean leave immediately without waiting for an official message.
Who issues tsunami warnings in Tonga
- meteoTonga Meteorological Service
- civilNational Emergency Management Office
Warning levels, colours and terminology are set nationally. Always read the warning text of the issuing authority: it names the affected districts, the expected time window and the recommended action.
If a warning is active in Tonga
- Move inland and at least 30 m above sea level, on foot, immediately.
- Stay away for hours: wave trains continue long after the first wave.
- Do not return to the coast until the all-clear from the official warning centre.
Where the data comes from
Waarning reads public, key-free sources for Tonga: NOAA PTWC, JMA, national tsunami warning centres, USGS. Measurements and official warnings are shown separately, and official warnings always keep the name of the authority that issued them.
Frequently asked questions
Who issues tsunami warnings in Tonga?
Tonga Meteorological Service, National Emergency Management Office. Waarning does not issue warnings; it aggregates the public feeds of these bodies and links back to the original source.
Does Waarning show live tsunami warnings for Tonga?
Yes. The dashboard loads the current values for Nuku'alofa from NOAA PTWC, JMA, national tsunami warning centres, USGS. You can open it with one click and the location is already set.
More warnings for Tonga
- Severe Weather Warnings
- Flood Warnings
- Air Quality Warnings
- Earthquake Alerts
- Volcano Alerts
- Landslide Warnings
Tsunami Warnings in nearby countries
Generated 2026-10-18. Waarning is not an official warning service; in an emergency follow local authorities and emergency services.