Historical tsunamis · Aug 10, 2025, 1:26 PM UTC
2025 Tracy Arm, Ak tsunami
United States
The tsunami of Aug 10, 2025, 1:26 PM UTC originated near Tracy Arm, Ak (United States).
Key facts
- Date
- Aug 10, 2025, 1:26 PM UTC
- Cause
- Landslide
- Maximum documented water height
- 481.0 m
- Damage
- limited (under US$ 1 million)
- Observation records
- 178
- Countries affected
- 1
Cause according to NOAA/NCEI: Landslide.
The highest documented water height was 481.0 m (Tracy Arm, Ak, United States).
178 observation sites in 1 countries are recorded.
Damage is estimated at limited (under US$ 1 million).
Map of observation sites
178Each 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) · Aug 10, 2025, 1:26 PM UTC
- 1:00 hUnited States · Juneau, Ak · 0.36 m
1 places with a documented arrival time
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| United States | 178 | 481.0 m Tracy Arm, Ak | — | 1:00 h |
Highest documented water heights
15 / 178Individual 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 |
|---|---|---|---|
| Tracy Arm, Ak · Ak | 481.00 m | 3 km | United States |
| Tracy Arm, Nsgl · Ak | 97.22 m | 9 km | United States |
| Tracy Arm, Nsgl · Ak | 91.77 m | 9 km | United States |
| Tracy Arm, Nsgl · Ak | 91.38 m | 9 km | United States |
| Tracy Arm, Nsgl · Ak | 88.45 m | 9 km | United States |
| Tracy Arm, Nsgl · Ak | 88.39 m | 9 km | United States |
| Tracy Arm, Nsgl · Ak | 85.71 m | 9 km | United States |
| Tracy Arm, Nsgl · Ak | 80.00 m | 9 km | United States |
| Tracy Arm, Midarm · Ak | 79.52 m | 5 km | United States |
| Tracy Arm, Nsgl · Ak | 78.70 m | 9 km | United States |
| Tracy Arm, Midarm · Ak | 73.27 m | 5 km | United States |
| Tracy Arm, Midarm · Ak | 72.10 m | 5 km | United States |
| Tracy Arm, Midarm · Ak | 71.90 m | 5 km | United States |
| Tracy Arm, Nsgl · Ak | 71.75 m | 9 km | United States |
| Tracy Arm, Midarm · Ak | 69.33 m | 5 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.