World Map › Major Tsunamis Since 1900 › 1993
Historic Tsunami
1993 United States of America Tsunami
8 August 1993 · Guam, Mariana Islands · United States of America
On 8 August 1993 at 08:34 UTC, a tsunami formed near Guam, Mariana Islands, United States of America. It was caused by a magnitude 7.8 earthquake. Waves reached up to 2.4 m high. It was observed at 50 locations in 4 countries or territories, up to 6,465 km from its source.
- Date
- 8 August 1993
- Time
- 08:34 UTC
- Cause
- Earthquake
- Earthquake Magnitude
- 7.8
- Highest Wave
- 2.4 m
- Observation Sites
- 50
- Furthest Reach
- 6,465 km
- Injuries
- 48
- Estimated Damage
- 250 million US dollars
- Source Country
- United States of America
- Triggering Earthquake
- 1993 Guam Earthquake
Countries and Territories Reached
Number of observations, highest wave and deaths in each country.
- 14United States of America · 2.4 m
- 33Japan · 0.5 m
- 2Taiwan · 0.2 m
- 1Marshall Islands, Rep. Of · 0.1 m
Highest Waves
- 2.4 mTalofofo River, Guam · United States of America · 39 km
- 1.8 mYlig Bay, Guam · United States of America · 45 km
- 0.5 mAburatsu · Japan · 2,474 km
- 0.4 mMera · Japan · 2,481 km
- 0.4 mMurotomisaki · Japan · 2,493 km
- 0.4 mTosa-Shimizu · Japan · 2,502 km
- 0.3 mChichijima Island · Japan · 1,586 km
- 0.3 mOmaezaki · Japan · 2,486 km
- 0.2 mKushimoto · Japan · 2,446 km
- 0.2 mOwase · Japan · 2,494 km
Sources: NOAA National Centers for Environmental Information, Global Historical Tsunami Database (doi:10.7289/V5PN93H7) · Natural Earth