Eruption history
VEI – Volcanic Explosivity Index: 0 = lava outpouring, 4 = like Eyjafjallajökull 2010, 6 = like Pinatubo 1991, 7 = like Tambora 1815. The scale is logarithmic – each step is about 10 times more material.
| Start | End | VEI | Vent and dating |
|---|---|---|---|
| 18 July 1968 | 18 July 1968 | 1 | Observations: Reported |
| 25 November 1967 | — | 1 | Observations: Reported |
| 8 June 1959 | 16 July 1959 | 2 | Iwo-dake · Observations: Reported |
| 15 March 1903 | 26 August 1903 | 2 | Observations: Reported |
| 16 February 1868 | 16 April 1868 | 1 | Observations: Reported |
| 16 March 1855 | 16 May 1855 | 2 | Observations: Reported |
| 1 December 1829 | 16 December 1829 | 1 | Observations: Reported |
| October 1796 | November 1796 | 2 | Iwo-dake · Observations: Reported |
| 1664 | — | ? | Observations: Reported |
Data: Global Volcanism Program, Smithsonian Institution (#282020)