Historical tsunamis · Jun 13, 1984, 2:29 AM UTC
1984 Tori Shima, Okinawa tsunami
Japan
The tsunami of Jun 13, 1984, 2:29 AM UTC originated near Tori Shima, Okinawa (Japan).
Key facts
- Date
- Jun 13, 1984, 2:29 AM UTC
- Cause
- Earthquake
- Magnitude
- M5.5
- Depth
- 41 km
- Maximum documented water height
- 0.50 m
- Observation records
- 9
- Countries affected
- 1
It was triggered by a magnitude 5.5 earthquake at a depth of 41 km.
The highest documented water height was 0.50 m (Yaene, Hachijo Island, Japan).
9 observation sites in 1 countries are recorded.
Map of observation sites
9Each 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 | 9 | 0.50 m Yaene, Hachijo Island | — | — |
Highest documented water heights
9 / 9Individual 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 |
|---|---|---|---|
| Yaene, Hachijo Island · Tokyo | 0.50 m | 185 km | Japan |
| Kozushima · Izu-Oshima, Tokyo | 0.29 m | 318 km | Japan |
| Tosa-Shimizu · Kochi | 0.14 m | 684 km | Japan |
| Mera · Chiba | 0.13 m | 386 km | Japan |
| Okada · Izu-Oshima, Tokyo | 0.12 m | 375 km | Japan |
| Minami-Izu · Shizuoka | 0.08 m | 368 km | Japan |
| Miyake Island · Bonin Is, Tokyo | 0.08 m | 295 km | Japan |
| Yaene, Hachijo Island · Tokyo | 0.07 m | 185 km | Japan |
| Kaminato, Hachijo Island · Tokyo | 0.06 m | 188 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.