Historical tsunamis · May 20, 1987
1987 Deep Cove tsunami
New Zealand
The tsunami of May 20, 1987 originated near Deep Cove (New Zealand).
Key facts
- Date
- May 20, 1987
- Cause
- Landslide
- Maximum documented water height
- —
- Damage
- limited (under US$ 1 million)
- Observation records
- 1
- Countries affected
- 1
Cause according to NOAA/NCEI: Landslide.
1 observation sites in 1 countries are recorded.
Damage is estimated at limited (under US$ 1 million).
Map of observation sites
1Each 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 | 1 | — | — | — |
Highest documented water heights
1 / 1Individual 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 |
|---|---|---|---|
| Deep Cove: Wanganella Cove | — | 0 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.