Historical tsunamis · Aug 10, 2009, 8:07 PM UTC
2009 Honshu: S Coast tsunami
Japan
The tsunami of Aug 10, 2009, 8:07 PM UTC originated near Honshu: S Coast (Japan).
Key facts
- Date
- Aug 10, 2009, 8:07 PM UTC
- Cause
- Earthquake
- Magnitude
- M6.4
- Depth
- 40 km
- Maximum documented water height
- 0.60 m
- Deaths
- 1
- Injuries
- 123
- Houses destroyed
- 5,192
- Damage
- severe (about US$ 5–25 million)
- Observation records
- 5
- Countries affected
- 1
It was triggered by a magnitude 6.4 earthquake at a depth of 40 km.
The highest documented water height was 0.60 m (Yaizu, Japan).
5 observation sites in 1 countries are recorded.
The database records 1 deaths.
Houses destroyed: 5,192.
Damage is estimated at severe (about US$ 5–25 million).
Map of observation sites
5Each 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) · Aug 10, 2009, 8:07 PM UTC
- 0:11 hJapan · Omaezaki · 0.39 m
1 places with a documented arrival time
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| Japan | 5 | 0.60 m Yaizu | — | 0:11 h |
Highest documented water heights
5 / 5Individual 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 |
|---|---|---|---|
| Yaizu · Shizuoka | 0.60 m | 15 km | Japan |
| Omaezaki · Shizuoka | 0.39 m | 15 km | Japan |
| Uchiura · Shizuoka | 0.17 m | 64 km | Japan |
| Owase · Mie | 0.07 m | 203 km | Japan |
| Shimizuminato · Shizuoka | 0.07 m | 37 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.