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 |
|---|---|---|---|
| 6 June 2010 | 22 June 2010 | 1 | Summit crater · Observations: Reported |
| 4 August 1984 | 21 September 1986 | 2 | Observations: Reported |
| 15 June 1980 | 3 July 1981 | 3 | Observations: Reported |
| 16 January 1961 | — | 2 | Observations: Reported |
| 16 December 1947 | — | 2 | Observations: Reported |
| 16 May 1931 | 15 July 1931 | 2 | Observations: Reported |
| 16 September 1930 | 17 January 1931 | 3 | Observations: Reported |
| 1 September 1929 | 16 April 1930 | 3 | Observations: Reported |
| 2 July 1869 | — | 2 | Observations: Reported |
| 16 February 1832 | — | 3 | Observations: Reported |
| 16 June 1828 | — | 3 | Observations: Reported |
| 1750 ± 50 years | — | 2 | Correlation: Tephrochronology |
| 1330 ± 25 years | — | 2 | Correlation: Tephrochronology |
| 1030 ± 25 years | — | 3 | Correlation: Tephrochronology |
| c. 550 | — | 3 | Correlation: Tephrochronology |
| c. 250 | — | 3 | Correlation: Tephrochronology |
| c. 200 | — | 3 | Correlation: Tephrochronology |
| c. 50 | — | 3 | Correlation: Tephrochronology |
| c. 350 BCE | — | 3 | Correlation: Tephrochronology |
| 700 BCE ± 850 years | — | 0 | Correlation: Tephrochronology |
| c. 2,000 BCE | — | 2 | Correlation: Tephrochronology |
| c. 2,050 BCE | — | 2 | Correlation: Tephrochronology |
| c. 2,200 BCE | — | 2 | Correlation: Tephrochronology |
| c. 2,250 BCE | — | 2 | Correlation: Tephrochronology |
| c. 2,450 BCE | — | 3 | Correlation: Tephrochronology |
| c. 2,750 BCE | — | 2 | Correlation: Tephrochronology |
| c. 3,450 BCE | — | 3 | Correlation: Tephrochronology |
| c. 3,550 BCE | — | 0 | Correlation: Tephrochronology |
| 3,580 BCE ± 100 years | — | 2 | Isotopic: 14C (uncalibrated) |
| c. 3,900 BCE | — | 2 | Correlation: Tephrochronology |
| c. 3,950 BCE | — | 2 | Correlation: Tephrochronology |
| c. 4,150 BCE | — | 2 | Correlation: Tephrochronology |
| 4,300 BCE ± 150 years | — | 0 | Correlation: Tephrochronology |
| c. 4,350 BCE | — | 3 | Correlation: Tephrochronology |
| c. 4,450 BCE | — | 2 | Correlation: Tephrochronology |
| c. 4,500 BCE | — | 2 | Correlation: Tephrochronology |
| c. 4,600 BCE | — | 2 | Correlation: Tephrochronology |
| c. 4,650 BCE | — | 3 | Correlation: Tephrochronology |
| c. 4,700 BCE | — | 2 | Correlation: Tephrochronology |
| c. 4,750 BCE | — | 3 | Correlation: Tephrochronology |
| c. 4,950 BCE | — | 2 | Correlation: Tephrochronology |
| c. 5,150 BCE | — | 3 | Correlation: Tephrochronology |
| c. 5,300 BCE | — | 2 | Correlation: Tephrochronology |
| c. 5,450 BCE | — | 3 | Correlation: Tephrochronology |
| c. 5,500 BCE | — | 3 | Correlation: Tephrochronology |
| c. 5,650 BCE | — | 3 | Correlation: Tephrochronology |
| c. 5,950 BCE | — | 3 | Correlation: Tephrochronology |
| c. 6,050 BCE | — | 0 | Correlation: Tephrochronology |
| c. 7,250 BCE | — | 2 | Correlation: Tephrochronology |
| 7,400 BCE ± 150 years | — | 0 | Correlation: Tephrochronology |
Data: Global Volcanism Program, Smithsonian Institution (#300070)