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 |
|---|---|---|---|
| 12 November 2014 | continuing | 1 | Mount Michael summit crater · Observations: Reported |
| 13 May 2000 | 16 November 2013 | 0 | Observations: Reported |
| 19 January 1999 | 19 January 1999 | 0 | Observations: Reported |
| 16 April 1995 | 16 February 1998 | 0 | Observations: Reported |
| 30 January 1989 | 22 March 1990 | 0 | Observations: Reported |
| 2 July 1900 ± 10 years | — | 0 | North flank · Correlation: Tephrochronology |
| 29 December 1819 | — | 2 | Observations: Reported |
Data: Global Volcanism Program, Smithsonian Institution (#390090)