Historical tsunamis · Jun 23, 2014, 8:53 PM UTC
2014 Aleutian Islands, Ak tsunami
United States
The tsunami of Jun 23, 2014, 8:53 PM UTC originated near Aleutian Islands, Ak (United States).
Key facts
- Date
- Jun 23, 2014, 8:53 PM UTC
- Cause
- Earthquake
- Magnitude
- M7.9
- Depth
- 109 km
- Maximum documented water height
- 0.17 m
- Observation records
- 20
- Countries affected
- 3
It was triggered by a magnitude 7.9 earthquake at a depth of 109 km.
The highest documented water height was 0.17 m (Amchitka, Ak, United States).
20 observation sites in 3 countries are recorded.
Outside the source country, the earliest documented arrival was at Midway Islands (USA Territory) after 3:15 h.
Map of observation sites
20Each 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 23, 2014, 8:53 PM UTC
- 0:04 hUnited States · Amchitka, Ak · 0.17 m
- 3:15 hUSA Territory · Midway Islands · 0.03 m
- 5:35 hCanada · Henslung Cove, British Columbia · 0.02 m
17 places with a documented arrival time
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| United States | 11 | 0.17 m Amchitka, Ak | — | 0:04 h |
 Canada | 8 | 0.03 m Moore Island, British Columbia | — | 5:35 h |
| USA Territory | 1 | 0.03 m Midway Islands | — | 3:15 h |
Highest documented water heights
15 / 20Individual 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 |
|---|---|---|---|
| Amchitka, Ak · Ak | 0.17 m | 66 km | United States |
| Atka Island, Ak · Ak | 0.12 m | 488 km | United States |
| Kahului, Maui, Hi · Hi | 0.10 m | 4,050 km | United States |
| Nikolski, Ak · Ak | 0.08 m | 851 km | United States |
| Saint Paul Island, Ak · Ak | 0.08 m | 921 km | United States |
| Unalaska, Dutch Harbor, Ak · Ak | 0.08 m | 1,016 km | United States |
| Adak, Sweeper Cove, Ak · Ak | 0.06 m | 319 km | United States |
| Shemya Island, Ak · Ak | 0.06 m | 331 km | United States |
| Hanalei, Kauai, Hi · Hi | 0.05 m | 3,785 km | United States |
| Haleiwa, Oahu, Hi · Hi | 0.04 m | 3,907 km | United States |
| Makapuu Point, Oahu, Hi · Hi | 0.03 m | 3,954 km | United States |
| Midway Islands · Hi | 0.03 m | 2,644 km | USA Territory |
| Moore Island, British Columbia · Bc | 0.03 m | 3,464 km | Canada |
| Winter Harbor, British Columbia · Bc | 0.03 m | 3,642 km | Canada |
| Bella Bella, British Columbia · Bc | 0.02 m | 3,565 km | Canada |
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.