Historical tsunamis · Aug 8, 1808
1808 E. Awa, Tokushima Prefecture tsunami
Japan
The tsunami of Aug 8, 1808 originated near E. Awa, Tokushima Prefecture (Japan).
Key facts
- Date
- Aug 8, 1808
- Cause
- Earthquake
- Magnitude
- M6.5
- Maximum documented water height
- 1.50 m
- Observation records
- 1
- Countries affected
- 1
It was triggered by a magnitude 6.5 earthquake.
The highest documented water height was 1.50 m (Naka River, Japan).
1 observation sites in 1 countries are recorded.
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 | 1.50 m Naka River | — | — |
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 |
|---|---|---|---|
| Naka River · Tokushima | 1.50 m | 13 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.