World Map › Tofua Arc at 20.9°S
Volcano
Tofua Arc at 20.9°S
Stratovolcano · -296 m · Tonga
Tofua Arc at 20.9°S sits on the Tonga Plate, in a subduction zone. 5 eruptions are known since the end of the last ice age, the most recent in 2017.
- Elevation
- -296 m
- Type
- Stratovolcano
- Tectonic Setting
- Subduction zone, oceanic crust
- Dominant Rock
- No Data (checked)
- Plate
- Tonga Plate
- Country
- Tonga
- Last Eruption
- 2017
- Known Eruptions (Holocene)
- 5
- Max. Explosivity (VEI)
- 1
Nearby Cities
Cities of more than 20,000 people within 100 km.
- 47 kmNuku'alofa43,000 people
Eruption Timeline
Each bar is an eruption; its height shows its explosivity (VEI 0 to 8).
Eruption Uncertain Date
Sources : Global Volcanism Program, 2026. Volcanoes of the World (v. 5.4.0; 7 Aug 2026), Smithsonian Institution, doi:10.5479/si.GVP.VOTW5-2026.5.4 (volcano.si.edu) · NOAA NCEI · USGS ·