World Map › Major Tsunamis Since 1900 › 1957
Historic Tsunami
1957 United States of America Tsunami
9 March 1957 · Andreanof Islands, Ak · United States of America
On 9 March 1957 at 14:22 UTC, a tsunami formed near Andreanof Islands, Ak, United States of America. It was caused by a magnitude 8.6 earthquake. Waves reached up to 32.0 m high. It was observed at 334 locations in 18 countries or territories, up to 13,903 km from its source. It killed at least 2 people and injured 1. It is the 38th highest of the tsunamis recorded since 1900.
- Date
- 9 March 1957
- Time
- 14:22 UTC
- Cause
- Earthquake
- Earthquake Magnitude
- 8.6
- Highest Wave
- 32.0 m
- Observation Sites
- 334
- Furthest Reach
- 13,903 km
- Deaths
- 2
- Injuries
- 1
- Source Country
- United States of America
- Triggering Earthquake
- 1957 Andreanof Islands Earthquake
Countries and Territories Reached
Number of observations, highest wave and deaths in each country.
- 269United States of America · 32.0 m2 deaths
- 1French Polynesia · 6.0 m
- 27Japan · 3.0 m
- 9Mexico · 1.0 m
- 6Chile · 1.0 m
- 4Peru · 0.6 m
- 1Ecuador · 0.5 m
- 1Papua New Guinea · 0.5 m
- 2El Salvador · 0.5 m
- 1Panama · 0.4 m
- 2Marshall Islands, Rep. Of · 0.3 m
- 2Canada · 0.3 m
Highest Waves
- 32.0 mE of Riding Cove, Unalaska, Ak · United States of America · 608 km
- 22.8 mUmnak Island (Pacific Coast), Ak · United States of America · 538 km
- 17.6 mConcord Point, Chuginadak, Ak · United States of America · 427 km
- 16.2 mWainiha Bay, Kauai, Hi · United States of America · 3,534 km
- 15.3 mS Cover Isthmus, Chuginadak, Ak · United States of America · 421 km
- 15.2 mScotch Cap, Ak · United States of America · 800 km
- 14.9 mSe Cleveland, Chuginadak, Ak · United States of America · 419 km
- 13.7 mTrappers Cove, Vsevidof Island, Ak · United States of America · 515 km
- 11.6 mWainiha, Kauai, Hi · United States of America · 3,534 km
- 11.6 mWainiha Bay, Kauai, Hi · United States of America · 3,534 km
Other Major Tsunamis in the Region
Sources: NOAA National Centers for Environmental Information, Global Historical Tsunami Database (doi:10.7289/V5PN93H7) · Natural Earth