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 |
|---|---|---|---|
| 26 October 1910 | 22 December 1910 | 2 | Ash Cone · Observations: Reported |
| c. 2 July 1886 | — | 0 | Dome NW of Ash Cone · Observations: Reported |
| 2 July 1878 ± 1 year | — | 2 | Dome NW of Ash Cone · Observations: Reported |
| c. 5,850 BCE | — | 4 | Isotopic: 14C (uncalibrated) |
Data: Global Volcanism Program, Smithsonian Institution (#222160)