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 January 2008 | 12 June 2009 | 3 | Summit and upper east flank · Observations: Reported |
| 26 May 2007 | 8 August 2007 | 2 | Observations: Reported |
| 9 April 2003 | 16 April 2003 | 2 | Observations: Reported |
| 13 October 2002 | — | 1 | Observations: Reported |
| 10 November 1998 | — | 2 | Observations: Reported |
| 3 April 1998 | 23 April 1998 | 2 | Observations: Reported |
| 16 March 1997 | 16 October 1997 | 1 | Observations: Reported |
| 13 October 1995 | 22 October 1995 | 2 | Observations: Reported |
| 17 May 1994 | 30 August 1994 | 2 | SE side summit crater, upper SW flank · Observations: Reported |
| 23 August 1992 | 2 September 1992 | 1 | Observations: Reported |
| 25 February 1990 | 25 November 1990 | 1 | Observations: Reported |
| 20 April 1984 | 26 November 1984 | 2 | Observations: Reported |
| 15 October 1979 | 28 November 1979 | 2 | Observations: Reported |
| 1 December 1971 | 12 March 1972 | 2 | Observations: Reported |
| 2 July 1964 | — | 2 | Observations: Reported |
| 22 October 1955 | 16 November 1957 | 3 | Summit and SE crater · Observations: Reported |
| 16 September 1949 | — | 2 | Observations: Reported |
| 23 July 1946 | — | 2 | Observations: Reported |
| 31 March 1945 | 3 April 1945 | 3 | Observations: Reported |
| 2 July 1944 | — | 2 | Observations: Reported |
| 9 June 1942 | 16 November 1942 | 2 | Observations: Reported |
| 23 June 1941 | — | 2 | Observations: Reported |
| 16 December 1938 | — | 1 | Observations: Reported |
| 9 February 1937 | 2 November 1937 | 2 | Observations: Reported |
| 31 December 1932 | 5 January 1933 | 3 | Observations: Reported |
| 2 March 1932 | 2 March 1932 | 2 | Observations: Reported |
| 6 July 1930 | 20 August 1930 | 2 | Observations: Reported |
| 16 December 1929 | — | 2 | Observations: Reported |
| 5 October 1927 | 5 December 1927 | 2 | SE crater and summit crater · Observations: Reported |
| 24 October 1922 | — | 2 | Observations: Reported |
| 4 February 1917 | — | 2 | Observations: Reported |
| 3 July 1914 | — | 2 | Observations: Reported |
| 2 July 1912 | — | 2 | Observations: Reported |
| 2 July 1907 | 16 March 1908 | 2 | Observations: Reported |
| 12 May 1903 | 14 May 1903 | 2 | Observations: Reported |
| 2 July 1895 | 2 July 1896 | 2 | Observations: Reported |
| 16 December 1893 | 16 December 1894 | 2 | Observations: Reported |
| 2 July 1892 | — | 2 | Observations: Reported |
| 20 April 1889 | 16 July 1889 | 2 | Observations: Reported |
| 16 January 1887 | 24 June 1887 | 2 | Observations: Reported |
| 2 July 1883 | — | 2 | Observations: Reported |
| 16 January 1877 | 24 June 1877 | 2 | Observations: Reported |
| 2 July 1875 | 2 July 1876 | 2 | Observations: Reported |
| 6 June 1872 | — | 2 | Observations: Reported |
| 16 April 1869 | — | 2 | Observations: Reported |
| 2 July 1866 | — | 2 | Observations: Reported |
| 2 July 1864 | — | 3 | Observations: Reported |
| 2 July 1862 | — | 3 | Observations: Reported |
| 2 July 1852 | 2 July 1853 | 2 | Observations: Reported |
| 2 July 1822 | — | 2 | Observations: Reported |
| December 1759 | — | 2 | Observations: Reported |
| 18 December 1751 | 1752 | 2 | Observations: Reported |
| February 1640 | — | 4 | Observations: Reported |
| 5,290 BCE ± 180 years | — | ? | Isotopic: 14C (uncalibrated) |
| 6,880 BCE ± 75 years | — | 5 | Isotopic: 14C (uncalibrated) |
| 7,410 BCE ± 300 years | — | ? | Isotopic: 14C (uncalibrated) |
Data: Global Volcanism Program, Smithsonian Institution (#357110)