Historical tsunamis · Sep 5, 2004, 10:07 AM UTC
2004 South Coast Honshu Island tsunami
Japan
The tsunami of Sep 5, 2004, 10:07 AM UTC originated near South Coast Honshu Island (Japan).
Key facts
- Date
- Sep 5, 2004, 10:07 AM UTC
- Cause
- Earthquake
- Magnitude
- M7.2
- Depth
- 14 km
- Maximum documented water height
- 0.63 m
- Injuries
- 4
- Damage
- limited (under US$ 1 million)
- Observation records
- 12
- Countries affected
- 1
It was triggered by a magnitude 7.2 earthquake at a depth of 14 km.
The highest documented water height was 0.63 m (Kozushima, Japan).
12 observation sites in 1 countries are recorded.
Damage is estimated at limited (under US$ 1 million).
Map of observation sites
12Each dot is a documented observation site; colour and size show the observed water height. The triangle marks the source.
Tsunami arrival times
Documented arrival times from the NOAA/NCEI database, showing the earliest recorded location per country. Coverage is incomplete: a country without an entry was not necessarily spared.
- 0:00 hEarthquake (origin) · Sep 5, 2004, 10:07 AM UTC
- 0:19 hJapan · Uragami · 0.28 m
12 places with a documented arrival time
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| Japan | 12 | 0.63 m Kozushima | — | 0:19 h |
Highest documented water heights
12 / 12Individual 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 |
|---|---|---|---|
| Kozushima · Izu-Oshima, Tokyo | 0.63 m | 266 km | Japan |
| Mera · Chiba | 0.36 m | 360 km | Japan |
| Kushimoto · Wakayama | 0.34 m | 92 km | Japan |
| Irozaki · Shizuoka | 0.30 m | 268 km | Japan |
| Murotomisaki · Kochi | 0.29 m | 230 km | Japan |
| Owase · Mie | 0.29 m | 119 km | Japan |
| Uragami · Wakayama | 0.28 m | 86 km | Japan |
| Ako, Honshu · Shizuoka | 0.27 m | 288 km | Japan |
| Tsubota · Tokyo | 0.21 m | 293 km | Japan |
| Chichijima Island · Bonin Is, Tokyo | 0.19 m | 853 km | Japan |
| Tosa-Shimizu · Kochi | 0.17 m | 344 km | Japan |
| Shirahama · Wakayama | 0.14 m | 134 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.