Historical tsunamis · Jul 20, 1835
1835 Sanriku tsunami
Japan
The tsunami of Jul 20, 1835 originated near Sanriku (Japan).
Key facts
- Date
- Jul 20, 1835
- Cause
- Earthquake
- Magnitude
- M7.6
- Maximum documented water height
- 5.00 m
- Deaths
- many (about 101–1,000)
- Houses destroyed
- many (about 101–1,000)
- Damage
- severe (about US$ 5–25 million)
- Observation records
- 4
- Countries affected
- 1
It was triggered by a magnitude 7.6 earthquake.
The highest documented water height was 5.00 m (Nobiru, Japan).
4 observation sites in 1 countries are recorded.
The database records many (about 101–1,000) deaths.
Houses destroyed: many (about 101–1,000).
Damage is estimated at severe (about US$ 5–25 million).
Map of observation sites
4Each 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 | 4 | 5.00 m Nobiru | — | — |
Highest documented water heights
4 / 4Individual 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 |
|---|---|---|---|
| Nobiru · Miyagi | 5.00 m | 83 km | Japan |
| Ryori · Iwate | 2.50 m | 126 km | Japan |
| Takada · Iwate | 2.00 m | 126 km | Japan |
| Sendai · Miyagi | — | 86 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.