Historical tsunamis · Mar 7, 1927, 9:27 AM UTC
1927 SW. Honshu Island tsunami
Japan
The tsunami of Mar 7, 1927, 9:27 AM UTC originated near SW. Honshu Island (Japan).
Key facts
- Date
- Mar 7, 1927, 9:27 AM UTC
- Cause
- Earthquake and landslide
- Magnitude
- M7.6
- Depth
- 10 km
- Maximum documented water height
- 11.3 m
- Deaths
- 3,022
- Injuries
- 3,295
- Houses destroyed
- 15,594
- Damage
- extreme (over US$ 25 million)
- Observation records
- 9
- Countries affected
- 1
It was triggered by a magnitude 7.6 earthquake at a depth of 10 km.
The highest documented water height was 11.3 m.
9 observation sites in 1 countries are recorded.
The database records 3,022 deaths.
Houses destroyed: 15,594.
Damage is estimated at extreme (over US$ 25 million).
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) · Mar 7, 1927, 9:27 AM UTC
- 0:10 hJapan · Tsuiyama · 0.15 m
1 places with a documented arrival time
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| Japan | 9 | 0.60 m Minato | — | 0:10 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 |
|---|---|---|---|
| Minato · Iwate | 0.60 m | 364 km | Japan |
| Nakano · Iwate | 0.60 m | 183 km | Japan |
| Tomari · Hokkaido | 0.60 m | 821 km | Japan |
| Amino · Kyoto | 0.50 m | 11 km | Japan |
| Takeno · Kyoto | 0.45 m | 17 km | Japan |
| Tsuiyama · Hyogo | 0.30 m | 25 km | Japan |
| Oshima · Izu-Oshima, Tokyo | 0.15 m | 404 km | Japan |
| Tsuiyama · Hyogo | 0.15 m | 25 km | Japan |
| Shiofuki · Kyoto | — | 14 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.