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 |
|---|---|---|---|
| 30 June 2010 | 10 August 2010 | 2 | Upper SW flank · Observations: Reported |
| 24 May 1980 | — | 1 | Observations: Reported |
| 1767 | 1769 | 2 | Summit dome · Observations: Reported |
Data: Global Volcanism Program, Smithsonian Institution (#290270)