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 1911 | 2 July 1912 | 4 | East flank (Sili) · Observations: Reported |
| 9 August 1904 | 18 October 1905 | 4 | East flank (Sili, Malo), Hulu ? · Observations: Reported |
| 1100 ± 30 years | — | 4 | Hulu · Isotopic: 14C (uncalibrated) |
Data: Global Volcanism Program, Smithsonian Institution (#252130)