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 |
|---|---|---|---|
| 2 June 2004 | 16 August 2004 | 2 | Observations: Reported |
| 7 April 1992 | — | 1 | SE part of summit crater · Observations: Reported |
| 12 August 1966 | 16 October 1966 | 4 | Observations: Reported |
| 16 December 1930 | 16 December 1931 | 2 | Observations: Reported |
| 20 June 1922 | 16 September 1922 | 0 | Observations: Reported |
| 16 February 1921 | 1 October 1921 | 0 | Observations: Reported |
| 14 March 1913 | 14 March 1913 | 2 | Observations: Reported |
| 2 July 1893 | — | 2 | Observations: Reported |
| 7 June 1892 | 12 June 1892 | 3 | Observations: Reported |
| 18 August 1885 | — | 2 | Observations: Reported |
| 25 August 1883 | 26 August 1883 | 2 | Observations: Reported |
| 16 August 1875 | 16 August 1875 | 2 | Observations: Reported |
| 2 March 1856 | 17 March 1856 | 3 | Observations: Reported |
| 6 August 1812 | 8 August 1812 | 4 | Observations: Reported |
| 10 December 1711 | 16 December 1711 | 3 | Observations: Reported |
| 1646 ± 5 years | — | 2 | Observations: Reported |
Data: Global Volcanism Program, Smithsonian Institution (#267040)