Historical tsunamis · Jul 10, 2011, 12:57 AM UTC
2011 Off East Coast of Honshu Island tsunami
Japan
The tsunami of Jul 10, 2011, 12:57 AM UTC originated near Off East Coast of Honshu Island (Japan).
Key facts
- Date
- Jul 10, 2011, 12:57 AM UTC
- Cause
- Earthquake
- Magnitude
- M7.0
- Depth
- 23 km
- Maximum documented water height
- 0.09 m
- Observation records
- 3
- Countries affected
- 1
It was triggered by a magnitude 7.0 earthquake at a depth of 23 km.
The highest documented water height was 0.09 m.
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.
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) · Jul 10, 2011, 12:57 AM UTC
- 0:38 hJapan · Ofunato · 0.05 m
3 places with a documented arrival time
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| Japan | 3 | 0.06 m Sendaishinko | — | 0:38 h |
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 |
|---|---|---|---|
| Sendaishinko · Miyagi | 0.06 m | 197 km | Japan |
| Ofunato · Iwate | 0.05 m | 171 km | Japan |
| Soma · Fukushima | 0.05 m | 203 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.