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 1880 | — | 0 | Volcano Uncertain: submarine vent off Sao Miguel |
| 2 July 1861 | — | 0 | Volcano Uncertain: submarine vent off Sao Miguel |
| 14 June 1811 | 22 June 1811 | 3 | Submarine vent west of Sete Cidades · Observations: Reported |
| 1 February 1811 | 8 February 1811 | 2 | Submarine vent west of Sete Cidades · Observations: Reported |
| 1713 | — | 2 | West flank (Pico das Camarinhas) · Observations: Reported |
| 13 December 1682 | — | 2 | Submarine vent west of Sete Cidades · Observations: Reported |
| 3 July 1638 | 28 July 1638 | 2 | Submarine vent west of Sete Cidades · Observations: Reported |
| c. 1444 | — | 4 | SW side of caldera (Caldeira Seca) · Observations: Reported |
| 1110 ± 50 years | — | 2 | West flank (Ponta de Ferraria) · Isotopic: 14C (uncalibrated) |
| 950 ± 100 years | — | 2 | SE flank (Ferraria) · Isotopic: 14C (uncalibrated) |
| 670 ± 150 years | — | 3 | SE flank (Carvao) · Isotopic: 14C (uncalibrated) |
| 380 ± 300 years | — | 4 | SE caldera floor (Lagoa Rasa) · Correlation: Tephrochronology |
| 90 ± 100 years | — | 4 | SE caldera floor (Lagoa de Santiago) · Isotopic: 14C (uncalibrated) |
| 750 BCE ± 300 years | — | ? | SE flank (Eguas) · Isotopic: 14C (uncalibrated) |
| 2,050 BCE ± 1,000 years | — | ? | Caldeira do Alfreres and NW flank · Correlation: Tephrochronology |
| c. 3,050 BCE | — | 4 | Seara Cerrado da Ladeira · Correlation: Tephrochronology |
Data: Global Volcanism Program, Smithsonian Institution (#382080)