Historical tsunamis · Aug 29, 1769
1769 SW. Kyushu Island tsunami
Japan
The tsunami of Aug 29, 1769 originated near SW. Kyushu Island (Japan).
Key facts
- Date
- Aug 29, 1769
- Cause
- Earthquake
- Magnitude
- M7.4
- Maximum documented water height
- 2.50 m
- Houses destroyed
- some (about 51–100)
- Damage
- moderate (about US$ 1–5 million)
- Observation records
- 5
- Countries affected
- 1
It was triggered by a magnitude 7.4 earthquake.
The highest documented water height was 2.50 m (Usuki, Japan).
5 observation sites in 1 countries are recorded.
Houses destroyed: some (about 51–100).
Damage is estimated at moderate (about US$ 1–5 million).
Map of observation sites
5Each 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 |
|---|---|---|---|---|
| Japan | 5 | 2.50 m Usuki | — | — |
Highest documented water heights
5 / 5Individual 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 |
|---|---|---|---|
| Usuki · Oita | 2.50 m | 93 km | Japan |
| Kamae · Oita | 2.00 m | 56 km | Japan |
| Nobeoka · Miyazaki | 2.00 m | 46 km | Japan |
| Saeki · Oita | 2.00 m | 74 km | Japan |
| Satsuma · Kagoshima | — | 180 km | Japan |
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.