Historical tsunamis · Nov 2, 1931, 10:02 AM UTC
1931 Seikaido tsunami
Japan
The tsunami of Nov 2, 1931, 10:02 AM UTC originated near Seikaido (Japan).
Key facts
- Date
- Nov 2, 1931, 10:02 AM UTC
- Cause
- Earthquake
- Magnitude
- M7.1
- Depth
- 40 km
- Maximum documented water height
- 0.80 m
- Deaths
- 1
- Houses destroyed
- 14
- Observation records
- 9
- Countries affected
- 1
It was triggered by a magnitude 7.1 earthquake at a depth of 40 km.
The highest documented water height was 0.80 m.
9 observation sites in 1 countries are recorded.
The database records 1 deaths.
Houses destroyed: 14.
Map of observation sites
9Each 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) · Nov 2, 1931, 10:02 AM UTC
- 0:30 hJapan · Aburatsu · 0.30 m
5 places with a documented arrival time
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| Japan | 9 | 0.43 m Murotomisaki | — | 0:30 h |
Highest documented water heights
9 / 9Individual 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 |
|---|---|---|---|
| Murotomisaki · Kochi | 0.43 m | 227 km | Japan |
| Aburatsu · Miyazaki | 0.30 m | 94 km | Japan |
| Hososhima · Miyazaki | 0.30 m | 48 km | Japan |
| Tosa-Shimizu · Kochi | 0.30 m | 103 km | Japan |
| Uwajima · Ehime | 0.10 m | 122 km | Japan |
| Shionomisaki · Wakayama | 0.07 m | 372 km | Japan |
| Shimotsu · Wakayama | 0.04 m | 354 km | Japan |
| Imamachi · Miyazaki | 0.03 m | 116 km | Japan |
| Nachikatsuura · Wakayama | 0.03 m | 393 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.