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 |
|---|---|---|---|
| 6 January 2022 | 14 April 2022 | 2 | Observations: Reported |
| 25 May 2015 | 16 July 2015 | 4 | a fissure on the SE edge of the caldera, on the NE, E, and SE flanks, and within the summit caldera · Observations: Reported |
| 28 August 1982 | 6 September 1982 | 1 | Caldera and SE flank (875 m) · Observations: Reported |
| 4 March 1963 | 16 March 1963 | 0 | SE flank (610 m) · Observations: Reported |
| 24 January 1948 | 31 January 1948 | 2 | SE flank (1200 m) · Observations: Reported |
| 2 July 1938 | — | ? | Observations: Reported |
| 16 February 1935 | — | ? | Observations: Reported |
| 2 July 1933 | — | 0 | Observations: Reported |
| 11 April 1925 | 26 March 1926 | 1 | ESE flank · Observations: Reported |
| 26 August 1859 | 29 August 1859 | ? | Observations: Reported |
| 27 September 1849 | 27 September 1849 | 0 | Volcano Uncertain: either Wolf or Darwin · Observations: Reported |
| 21 August 1800 | 21 August 1800 | 2 | Observations: Reported |
| August 1797 | — | ? | Observations: Reported |
| c. 1450 | — | 0 | Lower NE and SE flanks · Isotopic: Cosmic Ray Exposure |
| c. 950 | — | 0 | Lower NE flank · Isotopic: Cosmic Ray Exposure |
| 150 ± 800 years | — | 0 | Lower SW flank · Isotopic: Cosmic Ray Exposure |
Data: Global Volcanism Program, Smithsonian Institution (#353020)