July 1907 Eruption of Unnamed
Unnamed in Tonga erupted in July 1907 with a Volcanic Explosivity Index of 0. It caused a tsunami.
Where it erupted
Unnamed, Tonga.
The eruption
- Date
- July 1907
- Volcano
- Unnamed, submarine volcano
- Country
- Tonga
- Volcanic Explosivity Index
- 0, non-explosive (eruption column under 100 m)
- Tsunami
- Yes: the tsunami it caused
- Earthquake
- Yes: the earthquake with it
- Location
- 21.338° S, 175.650° W
The toll
The record gives no deaths, injuries or damage for this eruption.
What the record says
NCEI’s account, from the sources it cites.
During an eruption in 1907 [July] from an unnamed submarine volcano pyroclastic material was ejected to 100 m above the sea surface, and pumice rafts were produced. The eruption was approximately located on Admiralty Chart 2421 at a point 48 km SW of Tongatapu Island, along the Tofua volcanic arc. Tongatapu is located at the southern end of a chain of coral islands paralleling the Tofua volcanic arc on its eastern side. The reported location of the 1907 eruption corresponds to sloping terrain at 1800 m depth on a 1982 bathymetric map, but a seamount of about 500 m depth is located about 10 km to the NE. A second eruption from this area was reported in late 1932. (reference #2432)
Several km (miles) south of Tongatapu Island, a submarine eruption occurred, which was accompanied by a strong earthquake on Tongatapu and by a tidal wave. The event generated a large column of steam, along with pumice on the surface of the ocean (Reference #415).
More
Every eruption in 1907The 1900sUnnamedEarthquakes near Unnamed
Sources
Volcanoes and significant eruptions 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. Volcano numbers are the Smithsonian Institution’s Global Volcanism Program’s. NCEI event 2029.