July 18, 2015 Tsunami: Santa Cruz Islands, Solomon Islands
A tsunami caused by a magnitude 7 earthquake began at Santa Cruz Islands, Solomon Islands on July 18, 2015 at 02:27:33 UTC. The water rose as high as 0.09 meters. Its effects were recorded at 5 places in at least 3 countries.
Where the waves reached
The source (white) and every runup with a place, colored by the water height recorded there. A ring is a runup NCEI marks doubtful.
- Under 1 m
- 1 to 3 m
- 3 to 10 m
- 10 to 30 m
- 30 m and more
- Height not recorded
Travel times
How long the first wave took to reach each part of the ocean, one line for each hour up to 24, estimated from the source and the depth of the sea.
The travel times are computed in your browser, which needs JavaScript.
- 1 to 4 hours
- 5 to 6 hours
- 7 to 14 hours
- 15 hours and more
Computed in your browser the way NOAA’s own travel time maps are: the wave travels at the square root of gravity times the depth, over NOAA’s ETOPO1 depths averaged to a 10 arc-minute grid. Checked against NOAA NCEI’s maps for 21 tsunamis over the first 24 hours, these lines fall within 10 minutes of NCEI’s at half the points compared and within 52 minutes at 9 in 10. They give when the first wave could arrive, not how high it is; bays, harbors and island chains finer than the grid can see it later. Not for use in a warning: see tsunami.gov.
The tsunami
- Date
- July 18, 2015, 02:27:33 UTC
- Source
- Santa Cruz Islands, Solomon Islands
- Cause
- Earthquake
- Earthquake
- Magnitude 7, 11 km deep
- Maximum water height
- 0.09 m (0.3 ft)
- Runups recorded
- 5
- Waters
- Ocean
- How certain
- Definite tsunami
- Source location
- 10.401° S, 165.141° E
The toll
The record gives no deaths, injuries or damage for this tsunami.
What the record says
NCEI’s account, from the sources it cites.
A tsunami with wave heights (above sea level) was recorded at the following tide gauges: 18 cm at Lata Wharf, Solomon Islands; 11 cm at Lifo, New Caledonia. (reference #13456)
Every runup
Nearest the source first. Heights are above sea level at the time; a tide gauge reads half the wave’s full height.
| Where | Country | Km from source | Water height, m | Inland, m | Measured by | First wave, UTC | Deaths |
|---|---|---|---|---|---|---|---|
| Lata Wharf, Nendo Is, Santa Cruz Is | Solomon Islands | 81 | 0.09 | Tide gauge (half the maximum wave height) | |||
| D52406 Bpr, Honiara | Solomon Islands | 565 | 0.01 | Deep ocean gauge (half the maximum wave height) | |||
| Honiara, Guadalcanal | Solomon Islands | 579 | Tide gauge (half the maximum wave height) | ||||
| Lifou Island | New Caledonia | 1,186 | 0.06 | Tide gauge (half the maximum wave height) | |||
| D55023 Bpr, Etd Coral Sea | Papua New Guinea | 1,348 | Deep ocean gauge (half the maximum wave height) |
More
Every tsunami in 2015The 2000sTsunamis of Solomon IslandsThe earthquakeThis day in weather historyAlerts in force
Sources
Tsunami events and runups from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-10-01. NCEI tsunami event 5588.