Historical tsunamis · Jun 10, 1996, 4:03 AM UTC
1996 Andreanof Islands, Ak tsunami
United States
The tsunami of Jun 10, 1996, 4:03 AM UTC originated near Andreanof Islands, Ak (United States).
Key facts
- Date
- Jun 10, 1996, 4:03 AM UTC
- Cause
- Earthquake
- Magnitude
- M7.9
- Depth
- 33 km
- Maximum documented water height
- 0.51 m
- Observation records
- 65
- Countries affected
- 8
It was triggered by a magnitude 7.9 earthquake at a depth of 33 km.
The highest documented water height was 0.51 m (Adak, Sweeper Cove, Ak, United States).
65 observation sites in 8 countries are recorded.
Outside the source country, the earliest documented arrival was at Port Vila, Efate Island (Vanuatu) after 11:03 h.
Map of observation sites
65Each 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) · Jun 10, 1996, 4:03 AM UTC
- 0:31 hUnited States · Adak, Sweeper Cove, Ak · 0.51 m
- 11:03 hVanuatu · Port Vila, Efate Island · 0.06 m
- 18:40 hChile · Caldera · 0.12 m
18 places with a documented arrival time
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| United States | 36 | 0.51 m Adak, Sweeper Cove, Ak | — | 0:31 h |
| USA Territory | 3 | 0.26 m Midway Islands | — | — |
 Japan | 19 | 0.14 m Chichijima Island | — | — |
 Chile | 2 | 0.12 m Caldera | — | 18:40 h |
 Vanuatu | 1 | 0.06 m Port Vila, Efate Island | — | 11:03 h |
 Ecuador | 1 | 0.04 m Baltra Island | — | — |
 Peru | 2 | — | — | — |
| Marshall Islands, Rep. Of | 1 | — | — | — |
Highest documented water heights
15 / 65Individual 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 |
|---|---|---|---|
| Adak, Sweeper Cove, Ak · Ak | 0.51 m | 77 km | United States |
| Kahului, Maui, Hi · Hi | 0.28 m | 3,867 km | United States |
| Midway Islands · Hi | 0.26 m | 2,593 km | USA Territory |
| Hilo, Hawaii, Hi · Hi | 0.19 m | 4,045 km | United States |
| Nawiliwili, Kauai, Hi · Hi | 0.17 m | 3,646 km | United States |
| Chichijima Island · Bonin Is, Tokyo | 0.14 m | 4,315 km | Japan |
| Crescent City, Ca · Ca | 0.14 m | 4,134 km | United States |
| Ayukawa · Miyagi | 0.12 m | 3,489 km | Japan |
| Caldera · Atacama | 0.12 m | 13,456 km | Chile |
| Kushimoto · Wakayama | 0.11 m | 4,229 km | Japan |
| Uragami · Wakayama | 0.11 m | 4,215 km | Japan |
| Port Allen, Kauai, Hi · Hi | 0.10 m | 3,642 km | United States |
| Mera · Chiba | 0.09 m | 3,846 km | Japan |
| Onahama · Fukushima | 0.09 m | 3,626 km | Japan |
| Port San Luis, Ca · Ca | 0.09 m | 4,815 km | United States |
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.