Historical tsunamis · May 4, 2018, 10:32 PM UTC
2018 Hawaii tsunami
United States
The tsunami of May 4, 2018, 10:32 PM UTC originated near Hawaii (United States).
Key facts
- Date
- May 4, 2018, 10:32 PM UTC
- Cause
- Volcano and earthquake
- Magnitude
- M6.9
- Depth
- 6 km
- Maximum documented water height
- 0.40 m
- Injuries
- 1
- Houses destroyed
- 716
- Damage
- US$ 370 million
- Observation records
- 7
- Countries affected
- 1
It was triggered by a magnitude 6.9 earthquake at a depth of 6 km.
The highest documented water height was 0.40 m (Kapoho, Hawaii, Hi, United States).
7 observation sites in 1 countries are recorded.
Houses destroyed: 716.
Damage is estimated at US$ 370 million.
Map of observation sites
7Each 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 | 7 | 0.40 m Kapoho, Hawaii, Hi | — | — |
Highest documented water heights
7 / 7Individual 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 |
|---|---|---|---|
| Kapoho, Hawaii, Hi · Hi | 0.40 m | 28 km | United States |
| Hilo, Hawaii, Hi · Hi | 0.20 m | 46 km | United States |
| Kawaihae, Hawaii, Hi · Hi | 0.16 m | 118 km | United States |
| Honuapo, Hawaii, Hi · Hi | 0.15 m | 63 km | United States |
| Kahului, Maui, Hi · Hi | 0.15 m | 233 km | United States |
| Nawiliwili, Kauai, Hi · Hi | 0.04 m | 540 km | United States |
| Honolulu, Oahu, Hi · Hi | 0.03 m | 372 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.