Historical tsunamis · Nov 17, 1987, 8:46 AM UTC
1987 Gulf of Alaska, Ak tsunami
United States
The tsunami of Nov 17, 1987, 8:46 AM UTC originated near Gulf of Alaska, Ak (United States).
Key facts
- Date
- Nov 17, 1987, 8:46 AM UTC
- Cause
- Earthquake
- Magnitude
- M7.2
- Depth
- 10 km
- Maximum documented water height
- 0.06 m
- Observation records
- 1
- Countries affected
- 1
It was triggered by a magnitude 7.2 earthquake at a depth of 10 km.
The highest documented water height was 0.06 m (Yakutat, Ak, United States).
1 observation sites in 1 countries are recorded.
Map of observation sites
1Each dot is a documented observation site; colour and size show the observed water height. The triangle marks the source.
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| United States | 1 | 0.06 m Yakutat, Ak | — | — |
Highest documented water heights
1 / 1Individual 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 |
|---|---|---|---|
| Yakutat, Ak · Ak | 0.06 m | 230 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.