Historical tsunamis · Nov 11, 2022, 10:48 AM UTC
2022 Tonga Islands tsunami
Tonga
The tsunami of Nov 11, 2022, 10:48 AM UTC originated near Tonga Islands (Tonga).
Key facts
- Date
- Nov 11, 2022, 10:48 AM UTC
- Cause
- Earthquake
- Magnitude
- M7.3
- Depth
- 37 km
- Maximum documented water height
- 0.12 m
- Observation records
- 4
- Countries affected
- 2
It was triggered by a magnitude 7.3 earthquake at a depth of 37 km.
The highest documented water height was 0.12 m (Pago Pago, American Samoa, USA Territory).
4 observation sites in 2 countries are recorded.
Map of observation sites
4Each dot is a documented observation site; colour and size show the observed water height. The triangle marks the source.
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| USA Territory | 1 | 0.12 m Pago Pago, American Samoa | — | — |
| Tonga | 3 | 0.05 m Neiafu, Vavau | — | — |
Highest documented water heights
4 / 4Individual documented observations for this event. Heights come from different measurement types and sources; not every location has a measured height.
| Location / station | Observed height | Distance from source | Country |
|---|---|---|---|
| Pago Pago, American Samoa · As | 0.12 m | 576 km | USA Territory |
| Neiafu, Vavau | 0.05 m | 206 km | Tonga |
| Niuatoputapu | 0.03 m | 408 km | Tonga |
| Nukualofa (Nuku'alofa) | 0.02 m | 378 km | Tonga |
More tsunamis
Source: NOAA National Centers for Environmental Information (NCEI), Global Historical Tsunami Database. Confirmed events only. Deaths and damage are database estimates; older records are incomplete. Water heights come from different types of observation.