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 |
|---|---|---|---|
| 1 June 2020 | 1 June 2020 | 3 | Observations: Reported |
| 16 April 2016 | 20 January 2019 | 2 | Summit crater · Observations: Reported |
| 19 July 2011 | 18 August 2015 | 2 | Summit crater · Observations: Reported |
| 30 May 2010 | 2 June 2010 | 2 | Summit crater · Observations: Reported |
| 2 October 2009 | 12 December 2009 | 2 | Observations: Reported |
| 25 June 2009 | 25 June 2009 | 2 | Observations: Reported |
| 2 January 2009 | 21 January 2009 | 2 | Observations: Reported |
| 17 June 2007 | 12 August 2008 | 2 | Observations: Reported |
| 6 February 2006 | 28 October 2006 | 3 | Observations: Reported |
| 13 March 2005 | 27 November 2005 | 2 | Observations: Reported |
| 2 February 2001 | 15 April 2001 | 3 | Observations: Reported |
| 5 May 1997 | 5 May 1997 | 2 | Observations: Reported |
| 20 October 1994 | 20 October 1994 | 1 | Observations: Reported |
| 25 May 1994 | 25 May 1994 | 3 | Observations: Reported |
| 19 June 1987 | 28 August 1987 | 3 | Observations: Reported |
| 28 April 1986 | 27 May 1986 | 2 | Observations: Reported |
| 12 July 1984 | 12 July 1984 | 1 | Observations: Reported |
| 10 June 1944 | 12 June 1944 | 3 | Observations: Reported |
| 2 July 1938 | — | ? | Observations: Reported |
| 1 January 1932 | — | ? | Observations: Reported |
| 2 July 1897 | — | ? | Observations: Reported |
| 2 July 1893 | — | ? | Observations: Reported |
Data: Global Volcanism Program, Smithsonian Institution (#311240)