Historical tsunamis · Dec 20, 1711
1711 Seionaikai, Japan tsunami
Japan
The tsunami of Dec 20, 1711 originated near Seionaikai, Japan (Japan).
Key facts
- Date
- Dec 20, 1711
- Cause
- Earthquake
- Magnitude
- M6.7
- Maximum documented water height
- 2.00 m
- Deaths
- 1,000
- Houses destroyed
- 1,713
- Damage
- severe (about US$ 5–25 million)
- Observation records
- 1
- Countries affected
- 1
It was triggered by a magnitude 6.7 earthquake.
The highest documented water height was 2.00 m (Takamatsu, Japan).
1 observation sites in 1 countries are recorded.
The database records 1,000 deaths.
Houses destroyed: 1,713.
Damage is estimated at severe (about US$ 5–25 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 |
|---|---|---|---|---|
| Japan | 1 | 2.00 m Takamatsu | — | — |
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 |
|---|---|---|---|
| Takamatsu · Kagawa | 2.00 m | 6 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.