July 19, 1930 Tsunami: South of Java, Indonesia
A tsunami caused by a magnitude 6.5 earthquake began at South of Java, Indonesia on July 19, 1930 at 15:20:12 UTC. The water rose as high as 0.1 meters. Its effects were recorded at 1 place.
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
The tsunami
- Date
- July 19, 1930, 15:20:12 UTC
- Source
- South of Java, Indonesia
- Cause
- Earthquake
- Earthquake
- Magnitude 6.5, 100 km deep
- Maximum water height
- 0.1 m (0.3 ft)
- Runups recorded
- 1
- Tsunami magnitude (Iida)
- -3.3
- Waters
- Ocean
- How certain
- Questionable tsunami
- Source location
- 9.300° S, 114.300° 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.
July 19/20, 1930. On the 19th at 22:20, on the east of Java
Island and on the islands of Bali and Lombok, there was an earthquake with a maximal intensity of 4 degrees. At Djember, it was preceded by a roar. The radius of the zone of perceptibility was 330 km; on the 20th at 2:00, the lighthouse keeper at Bansiring (Besuki) noted a tidal wave 10 cm high. 19.VII; 15h20m12s; 9.3 S., 114.3 E., Magnitude 5.5 [table 66 lists magnitude 6.5]. (reference #414)
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 |
|---|---|---|---|---|---|---|---|
| Bansiring (Besuki) | Indonesia | 184 | 0.1 | Tide gauge (half the maximum wave height) |
More
Every tsunami in 1930The 1900sTsunamis of IndonesiaThe 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 2026-09-24. NCEI tsunami event 1626.