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 |
|---|---|---|---|
| 2 July 1912 | — | 2 | Observations: Reported |
| 28 October 1905 | 30 October 1905 | 2 | Observations: Reported |
| 26 September 1829 | — | 2 | Observations: Reported |
| 1 March 1826 | — | 2 | East flank (Riso Patrón) · Observations: Reported |
Data: Global Volcanism Program, Smithsonian Institution (#357021)