Historical tsunamis · Apr 23, 1962, 5:58 AM UTC
1962 SE. Hokkaido Island tsunami
Japan
The tsunami of Apr 23, 1962, 5:58 AM UTC originated near SE. Hokkaido Island (Japan).
Key facts
- Date
- Apr 23, 1962, 5:58 AM UTC
- Cause
- Earthquake
- Magnitude
- M7.0
- Depth
- 60 km
- Maximum documented water height
- 0.10 m
- Observation records
- 10
- Countries affected
- 1
It was triggered by a magnitude 7.0 earthquake at a depth of 60 km.
The highest documented water height was 0.10 m (Kuji, Japan).
10 observation sites in 1 countries are recorded.
Map of observation sites
10Each 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) · Apr 23, 1962, 5:58 AM UTC
- 0:20 hJapan · Hiroo · 0.07 m
6 places with a documented arrival time
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| Japan | 10 | 0.10 m Kuji | — | 0:20 h |
Highest documented water heights
10 / 10Individual 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 |
|---|---|---|---|
| Kuji · Iwate | 0.10 m | 288 km | Japan |
| Tokachiko · Hokkaido | 0.08 m | 48 km | Japan |
| Hakodate · Hokkaido | 0.07 m | 269 km | Japan |
| Hiroo · Hokkaido | 0.07 m | 49 km | Japan |
| Kushiro · Hokkaido | 0.05 m | 94 km | Japan |
| Hanasaki · Hokkaido | 0.04 m | 182 km | Japan |
| Kujiko · Iwate | 0.04 m | 283 km | Japan |
| Urakawa · Hokkaido | 0.04 m | 94 km | Japan |
| Miyako · Iwate | 0.02 m | 326 km | Japan |
| Tomakomainishiko · Hokkaido | — | 194 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.