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 |
|---|---|---|---|
| 5 December 1993 | — | 1 | South caldera wall · Observations: Reported |
| 2 July 1953 ± 7 years | — | 0 | SE flank near Cartago Bay · Observations: Reported |
Data: Global Volcanism Program, Smithsonian Institution (#353040)