Historical tsunamis · Jul 30, 1972, 9:45 PM UTC
1972 SE. Alaska, Ak tsunami
United States
The tsunami of Jul 30, 1972, 9:45 PM UTC originated near SE. Alaska, Ak (United States).
Key facts
- Date
- Jul 30, 1972, 9:45 PM UTC
- Cause
- Earthquake and landslide
- Magnitude
- M7.6
- Depth
- 25 km
- Maximum documented water height
- 0.10 m
- Damage
- limited (under US$ 1 million)
- Observation records
- 3
- Countries affected
- 1
It was triggered by a magnitude 7.6 earthquake at a depth of 25 km.
The highest documented water height was 0.10 m (Juneau, Ak, United States).
3 observation sites in 1 countries are recorded.
Damage is estimated at limited (under US$ 1 million).
Map of observation sites
3Each 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 | 3 | 0.10 m Juneau, Ak | — | — |
Highest documented water heights
3 / 3Individual 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 |
|---|---|---|---|
| Juneau, Ak · Ak | 0.10 m | 181 km | United States |
| Sitka, Ak · Ak | 0.08 m | 33 km | United States |
| Berry Island, Ak · Ak | — | 118 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.