Historic Tsunami

1975 United States of America Tsunami

29 November 1975 · Hawaii · United States of America

On 29 November 1975 at 14:47 UTC, a tsunami formed near Hawaii, United States of America. It was caused by an earthquake and landslide. Waves reached up to 14.3 m high. It was observed at 84 locations in 9 countries or territories, up to 10,592 km from its source. It killed at least 2 people and injured 19.

Date

29 November 1975

Time

14:47 UTC

Cause

Earthquake and landslide

Earthquake Magnitude

7.7

Highest Wave

14.3 m

Observation Sites

84

Furthest Reach

10,592 km

Deaths

2

Injuries

19

Estimated Damage

4 million US dollars

Source Country

United States of America

Triggering Earthquake

1975 Hawaii Earthquake

Countries and Territories Reached

Number of observations, highest wave and deaths in each country.

• 39United States of America · 14.3 m2 deaths
• 8Mexico · 0.5 m
• 25Japan · 0.3 m
• 3Peru · 0.2 m
• 4Chile · 0.2 m
• 1Ecuador · 0.2 m
• 1Samoa · 0.2 m
• 1Marshall Islands, Rep. Of · 0.1 m
• 2Canada · 0.1 m

Highest Waves

• 14.3 mKeauhou Landing, Hawaii, Hi · United States of America · 29 km
• 7.9 mHalape, Hawaii, Hi · United States of America · 31 km2 deaths
• 7.6 mPunaluu Bay, Hawaii, Hi · United States of America · 60 km
• 6.9 mKamoamoa, Hawaii, Hi · United States of America · 15 km
• 6.6 mHonuapo, Hawaii, Hi · United States of America · 68 km
• 4.9 mKaalualu Bay, Hawaii, Hi · United States of America · 82 km
• 3.7 mKaimu, Hawaii, Hi · United States of America · 11 km
• 3.4 mCape Kumukahi, Hawaii, Hi · United States of America · 26 km
• 3.3 mNapoopoo, Hawaii, Hi · United States of America · 93 km
• 2.9 mKeauhou Bay, Hawaii, Hi · United States of America · 99 km

Other Major Tsunamis in the Region

• 1952Hawaii, United States of America · 3.0 m
• 1951Hawaii, United States of America · 3.6 m
• 1919Alika, Hawaii, United States of America · 4.3 m

Sources: NOAA National Centers for Environmental Information, Global Historical Tsunami Database (doi:10.7289/V5PN93H7) · Natural Earth