Historical tsunamis · Jun 18, 2020, 12:49 PM UTC
2020 S of Raoul Island, Kermadec Islands tsunami
New Zealand
The tsunami of Jun 18, 2020, 12:49 PM UTC originated near S of Raoul Island, Kermadec Islands (New Zealand).
Key facts
- Date
- Jun 18, 2020, 12:49 PM UTC
- Cause
- Earthquake
- Magnitude
- M7.4
- Depth
- 10 km
- Maximum documented water height
- 0.11 m
- Observation records
- 4
- Countries affected
- 1
It was triggered by a magnitude 7.4 earthquake at a depth of 10 km.
The highest documented water height was 0.11 m (Korotiti Bay, Great Barrier Island, New Zealand).
4 observation sites in 1 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.
Tsunami arrival times
Documented arrival times from the NOAA/NCEI database, showing the earliest recorded location per country. Coverage is incomplete: a country without an entry was not necessarily spared.
- 0:00 hEarthquake (origin) · Jun 18, 2020, 12:49 PM UTC
- 1:32 hNew Zealand · Korotiti Bay, Great Barrier Island · 0.11 m
2 places with a documented arrival time
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| New Zealand | 4 | 0.11 m Korotiti Bay, Great Barrier Island | — | 1:32 h |
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 |
|---|---|---|---|
| Korotiti Bay, Great Barrier Island | 0.11 m | 689 km | New Zealand |
| North Cape | 0.09 m | 850 km | New Zealand |
| Raoul Island, Fishing Rock Classified as doubtful | 0.07 m | 448 km | New Zealand |
| Raoul Island, Boat Cove Classified as doubtful | 0.04 m | 445 km | New Zealand |
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.