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 |
|---|---|---|---|
| 24 December 2024 | 4 December 2025 | 3 | Observations: Satellite (infrared) |
| 15 March 2022 | 14 August 2024 | 3 | Summit crater · Observations: Reported |
| 5 December 2016 | 1 February 2021 | 3 | Summit crater · Observations: Reported |
| 12 February 2012 | 20 June 2013 | ? | Summit crater · Observations: Reported |
| 21 May 2010 | 29 April 2011 | 3 | Summit crater · Observations: Satellite (infrared) |
| 17 December 2009 | 16 February 2010 | 3 | Observations: Reported |
| 11 July 2008 | 23 August 2008 | 3 | Observations: Reported |
| 10 May 2007 | 24 December 2007 | 3 | Observations: Reported |
| 16 April 2006 | 29 December 2006 | 3 | Observations: Reported |
| 29 November 2005 | 1 December 2005 | 2 | Observations: Reported |
| 14 January 2004 | 16 February 2005 | 3 | Observations: Reported |
| 26 July 2003 | 1 August 2003 | 3 | Observations: Reported |
| 25 December 2002 | 28 December 2002 | 2 | Observations: Reported |
| 10 December 2001 | 6 January 2002 | 2 | Observations: Reported |
| 23 July 2001 | 10 August 2001 | 3 | Observations: Reported |
| 18 July 2000 | 4 November 2000 | 2 | Observations: Reported |
| 14 March 2000 | 26 March 2000 | 2 | Observations: Reported |
| 25 February 1999 | 25 February 1999 | 2 | Observations: Reported |
| 20 June 1998 | 22 June 1998 | 0 | Observations: Reported |
| 5 December 1997 | 6 December 1997 | 3 | Observations: Reported |
| 8 May 1997 | 16 May 1997 | 3 | Observations: Reported |
| 23 July 1996 | 1 September 1996 | 0 | Observations: Reported |
| 16 September 1995 | 8 October 1995 | 3 | Observations: Reported |
| 7 July 1994 | 5 October 1994 | 2 | Observations: Reported |
| 21 October 1993 | 4 February 1994 | 3 | Observations: Reported |
| 12 March 1992 | 12 June 1992 | 2 | Observations: Reported |
| 29 January 1990 | 29 November 1991 | 3 | Observations: Reported |
| 1 August 1989 | 4 August 1989 | 2 | Observations: Reported |
| 5 December 1986 | 26 July 1988 | 3 | Observations: Reported |
| 26 March 1986 | 29 June 1986 | 2 | Observations: Reported |
| 12 June 1985 | 14 December 1985 | 3 | Observations: Reported |
| 5 February 1984 | 16 December 1984 | 3 | Observations: Reported |
| 12 June 1981 | 22 May 1983 | 3 | Observations: Reported |
| 21 August 1980 | 27 August 1980 | 2 | Observations: Reported |
| 18 April 1980 | 19 April 1980 | 3 | Observations: Reported |
| 18 September 1979 | — | 2 | Observations: Reported |
| 11 February 1979 | — | 3 | Observations: Reported |
| 8 September 1978 | — | 2 | Observations: Reported |
| 25 March 1977 | — | 3 | Observations: Reported |
| 25 March 1976 | — | 2 | Observations: Reported |
| 16 March 1971 | 16 December 1974 | 3 | Observations: Reported |
| 9 March 1965 | 16 March 1970 | 3 | Observations: Reported |
| 25 December 1964 | 26 December 1964 | 1 | Observations: Reported |
| 25 June 1964 | 20 September 1964 | 2 | Observations: Reported |
| 16 May 1963 | 16 September 1963 | 1 | Observations: Reported |
| 21 October 1962 | 6 November 1962 | 2 | Observations: Reported |
| 18 October 1961 | 15 December 1961 | 3 | Observations: Reported |
| 21 May 1961 | 6 June 1961 | 2 | Observations: Reported |
| 25 March 1961 | 26 March 1961 | 3 | Observations: Reported |
| 13 April 1960 | 14 April 1960 | 2 | Observations: Reported |
| 15 October 1959 | 4 November 1959 | 1 | Observations: Reported |
| 28 December 1958 | 30 March 1959 | 2 | Observations: Reported |
| 21 May 1958 | — | 1 | Observations: Reported |
| 16 January 1958 | 14 February 1958 | 1 | Observations: Reported |
| 31 July 1957 | 31 July 1957 | 2 | Observations: Reported |
| 22 October 1955 | 1 March 1957 | 5 | Observations: Reported |
| c. 950 | — | 4 | Summit region and western flank · Correlation: Tephrochronology |
| c. 850 | — | ? | Correlation: Tephrochronology |
| 700 ± 50 years | — | 4 | East summit region (Razrushenny dome) · Correlation: Tephrochronology |
| c. 600 | — | ? | Correlation: Tephrochronology |
| c. 250 | — | ? | Correlation: Tephrochronology |
| c. 150 | — | ? | Correlation: Tephrochronology |
| c. 50 | — | ? | Correlation: Tephrochronology |
| c. 450 BCE | — | 4 | Isotopic: 14C (calibrated) |
| c. 1,350 BCE | — | ? | Correlation: Tephrochronology |
| 1,550 BCE ± 500 years | — | ? | Expeditsii and Exstrusivny Greben · Correlation: Tephrochronology |
| 2,750 BCE ± 500 years | — | ? | Correlation: Tephrochronology |
| c. 5,050 BCE | — | ? | Pra-Bezymianny · Correlation: Tephrochronology |
| 7,050 BCE ± 2,000 years | — | ? | Pra-Bezymianny · Correlation: Tephrochronology |
Data: Global Volcanism Program, Smithsonian Institution (#300250)