Historical tsunamis · Sep 10, 1899, 9:41 PM UTC
1899 Yakutat Bay, Ak tsunami
United States
The tsunami of Sep 10, 1899, 9:41 PM UTC originated near Yakutat Bay, Ak (United States).
Key facts
- Date
- Sep 10, 1899, 9:41 PM UTC
- Cause
- Earthquake and landslide
- Magnitude
- M8.2
- Depth
- 25 km
- Maximum documented water height
- 61.0 m
- Damage
- severe (about US$ 5–25 million)
- Observation records
- 12
- Countries affected
- 1
It was triggered by a magnitude 8.2 earthquake at a depth of 25 km.
The highest documented water height was 61.0 m (Lituya Bay, Ak, United States).
12 observation sites in 1 countries are recorded.
Damage is estimated at severe (about US$ 5–25 million).
Map of observation sites
12Each 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 | 12 | 61.0 m Lituya Bay, Ak | — | — |
Highest documented water heights
12 / 12Individual 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 |
|---|---|---|---|
| Lituya Bay, Ak · Ak | 60.96 m | 205 km | United States |
| Logan Coast, Ak · Ak | 12.19 m | 31 km | United States |
| Disenchantment Bay, Ak · Ak | 12.00 m | 23 km | United States |
| Russel Fjord, Ak · Ak | 9.10 m | 34 km | United States |
| Yakutat Bay, West Shore, Ak · Ak | 9.00 m | 31 km | United States |
| Kwik River Delta, Ak · Ak | 4.60 m | 22 km | United States |
| Yakutat, Ak · Ak | 4.60 m | 48 km | United States |
| Yakutat, Ak · Ak | 3.00 m | 59 km | United States |
| Valdez, Ak · Ak | 2.10 m | 369 km | United States |
| Katalla, Controller Bay, Ak · Ak | 1.22 m | 252 km | United States |
| Lynn Canal, Ak · Ak | 0.60 m | 304 km | United States |
| Glacier Bay, Ak · Ak | — | 233 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.