Historical tsunamis · Oct 29, 1989, 5:25 AM UTC
1989 N. Honshu Island tsunami
Japan
The tsunami of Oct 29, 1989, 5:25 AM UTC originated near N. Honshu Island (Japan).
Key facts
- Date
- Oct 29, 1989, 5:25 AM UTC
- Cause
- Earthquake
- Magnitude
- M6.5
- Depth
- 10 km
- Maximum documented water height
- 0.11 m
- Observation records
- 4
- Countries affected
- 1
It was triggered by a magnitude 6.5 earthquake at a depth of 10 km.
The highest documented water height was 0.11 m (Ofunato, Japan).
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.
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| Japan | 4 | 0.11 m Ofunato | — | — |
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 |
|---|---|---|---|
| Ofunato · Iwate | 0.11 m | 150 km | Japan |
| Ayukawa · Miyagi | 0.10 m | 212 km | Japan |
| Miyako · Iwate | 0.07 m | 116 km | Japan |
| Hachinohe · Aomori | 0.02 m | 187 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.