Historical tsunamis · Mar 24, 1987, 12:49 PM UTC
1987 Honshu Island tsunami
Japan
The tsunami of Mar 24, 1987, 12:49 PM UTC originated near Honshu Island (Japan).
Key facts
- Date
- Mar 24, 1987, 12:49 PM UTC
- Cause
- Earthquake
- Magnitude
- M5.1
- Depth
- 23 km
- Maximum documented water height
- 0.16 m
- Observation records
- 3
- Countries affected
- 1
It was triggered by a magnitude 5.1 earthquake at a depth of 23 km.
The highest documented water height was 0.16 m (Tateyama, Japan).
3 observation sites in 1 countries are recorded.
Map of observation sites
3Each 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 | 3 | 0.16 m Tateyama | — | — |
Highest documented water heights
3 / 3Individual 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 |
|---|---|---|---|
| Tateyama · Chiba | 0.16 m | 326 km | Japan |
| Kushiro · Hokkaido | 0.11 m | 826 km | Japan |
| Miyako · Iwate | 0.10 m | 434 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.