Historical tsunamis · Mar 9, 2011, 9:24 PM UTC
2011 Off Sanriku tsunami
Japan
The tsunami of Mar 9, 2011, 9:24 PM UTC originated near Off Sanriku (Japan).
Key facts
- Date
- Mar 9, 2011, 9:24 PM UTC
- Cause
- Earthquake
- Magnitude
- M6.3
- Depth
- 15 km
- Maximum documented water height
- 0.06 m
- Observation records
- 1
- Countries affected
- 1
It was triggered by a magnitude 6.3 earthquake at a depth of 15 km.
The highest documented water height was 0.06 m (Ayukawa, Japan).
1 observation sites in 1 countries are recorded.
Map of observation sites
1Each 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 | 1 | 0.06 m Ayukawa | — | — |
Highest documented water heights
1 / 1Individual 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 |
|---|---|---|---|
| Ayukawa · Miyagi | 0.06 m | 114 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.