Historical tsunamis · Apr 24, 2023, 12:41 AM UTC
2023 S of Raoul Island, Kermadec Islands tsunami
New Zealand
The tsunami of Apr 24, 2023, 12:41 AM UTC originated near S of Raoul Island, Kermadec Islands (New Zealand).
Key facts
- Date
- Apr 24, 2023, 12:41 AM UTC
- Cause
- Earthquake
- Magnitude
- M7.1
- Depth
- 43 km
- Maximum documented water height
- 0.11 m
- Observation records
- 3
- Countries affected
- 2
It was triggered by a magnitude 7.1 earthquake at a depth of 43 km.
The highest documented water height was 0.11 m (Raoul Island, Fishing Rock, New Zealand).
3 observation sites in 2 countries are recorded.
Map of observation sites
3Each 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 |
|---|---|---|---|---|
| New Zealand | 2 | 0.11 m Raoul Island, Fishing Rock | — | — |
 Tonga | 1 | — | — | — |
Highest documented water heights
3 / 3Individual 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 |
|---|---|---|---|
| Raoul Island, Fishing Rock | 0.11 m | 80 km | New Zealand |
| Raoul Island, Boat Cove | 0.09 m | 76 km | New Zealand |
| D5401002 Bpr, S of Tonga | — | 274 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.