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 |
|---|---|---|---|
| 14 April 1911 | 14 September 1912 | 1 | Observations: Reported |
| 15 July 1902 | — | 2 | West Crater · Observations: Reported |
| 16 June 1900 | — | 2 | Observations: Reported |
| 3 September 1899 | — | 2 | Observations: Reported |
| 190 ± 200 years | — | 4 | Isotopic: 14C (uncalibrated) |
Data: Global Volcanism Program, Smithsonian Institution (#315020)