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 |
|---|---|---|---|
| 28 February 2021 | 5 April 2021 | 1 | Observations: Reported |
| 4 September 2018 | 23 December 2018 | 1 | Intracaldera summit cone and its S flank · Observations: Reported |
| 13 June 2013 | 12 October 2013 | 3 | Western intracaldera cone and SE flank · Observations: Reported |
| 22 February 2008 | 1 March 2008 | 1 | Western intracaldera cone · Observations: Reported |
| 3 March 2006 | 7 September 2006 | 1 | Western intracaldera cone · Observations: Reported |
| 7 September 2005 | 4 November 2005 | 1 | Western intracaldera cone · Observations: Reported |
| 4 January 2005 | 14 February 2005 | 2 | Western intracaldera cone · Observations: Reported |
| 16 February 2004 | 5 September 2004 | 2 | Western intracaldera cone · Observations: Reported |
| 24 September 2002 | 23 March 2003 | 1 | Western intracaldera cone · Observations: Reported |
| 15 November 1995 | 30 November 1995 | 1 | Western intracaldera cone · Observations: Reported |
| 17 April 1995 | 17 April 1995 | 1 | Western intracaldera cone · Observations: Reported |
| 30 July 1993 | 28 September 1994 | 2 | Western cone and Half Cone · Observations: Reported |
| 19 March 1987 | 19 March 1987 | 1 | Western intracaldera cone · Observations: Reported |
| 29 November 1984 | 6 December 1984 | 2 | Western intracaldera cone · Observations: Reported |
| 2 June 1983 | 17 April 1984 | 3 | Western intracaldera cone · Observations: Reported |
| 16 March 1956 | 23 May 1956 | 3 | Western intracaldera cone · Observations: Reported |
| 28 March 1944 | — | 2 | Western intracaldera cone · Observations: Reported |
| 16 November 1939 | — | 2 | Western intracaldera cone · Observations: Reported |
| 23 May 1939 | 26 June 1939 | 3 | Western intracaldera cone · Observations: Reported |
| 16 June 1930 | — | 2 | Western intracaldera cone · Observations: Reported |
| 28 August 1892 | 30 August 1892 | 3 | Western intracaldera cone · Observations: Reported |
| 15 July 1874 | — | 2 | Western intracaldera cone · Observations: Reported |
| 4 August 1838 | 16 April 1839 | 3 | Western intracaldera cone · Observations: Reported |
| c. 1,750 BCE | — | 6 | Isotopic: 14C (uncalibrated) |
Data: Global Volcanism Program, Smithsonian Institution (#312070)