Available Weekly Reports
| Santorini |

There are no activity reports for Santorini.
Summary of eruption dates and Volcanic Explosivity Indices (VEI).
| Start Date | Stop Date | Eruption Certainty | VEI | Evidence | Activity Area or Unit |
|---|---|---|---|---|---|
| 1950 Jan 10 | 1950 Feb 2 | Confirmed | 2 | Historical | Nea Kameni (Liatsikas dome) |
| 1939 Aug 20 | 1941 Jul 2 ± 1 days | Confirmed | 2 | Historical | Nea Kameni (Triton, Ktenas, Fouque domes) |
| 1928 Jan 23 | 1928 Mar 17 | Confirmed | 2 | Historical | Nea Kameni (Naftilos dome) |
| 1925 Aug 11 | 1926 May | Confirmed | 2 | Historical | Nea Kameni (Dafni dome) |
| 1866 Jan 26 | 1870 Oct 15 | Confirmed | 2 | Historical | Georgios, Afroessa and Reka domes |
| 1707 May 23 | 1711 Sep 14 | Confirmed | 3 | Historical | Nea Kameni |
| 1650 Sep 27 | 1650 Dec 6 | Confirmed | 4 | Historical | Colombo Bank (6.5 km NE of Thera) |
| 1570 | 1573 | Confirmed | 3 | Historical | Mikri Kameni |
| 726 Jul 15 ± 45 days | Unknown | Confirmed | 4 | Historical | NE side of Thia Island |
| 46 Dec 31 | 47 Feb 1 ± 30 days | Confirmed | 3 | Historical | Thia Island |
| [ |
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Discredited | |||
| 197 BCE | Unknown | Confirmed | 3 | Historical | Hiera Island |
| 1610 BCE ± 14 years | Unknown | Confirmed | 7 | Radiocarbon (corrected) |
Renowned Santorini (Thera), with its steep-walled caldera rim draped by whitewashed villages overlooking an active volcanic island in the center of a caldera bay, is one of the scenic highlights of the Aegean. The circular island group is composed of overlapping shield volcanoes cut by at least four partially overlapping calderas. The oldest southern caldera was formed about 180,000 years before present (BP), followed by the Skaros caldera about 70,000 years BP, and then the Cape Riva caldera about 21,000 years BP. The youngest caldera formed about 3600 years BP during the Late-Bronze-Age Minoan eruption that forced abandonment of the thriving Aegean Sea island. Post-Minoan eruptions beginning in 197 BC constructed a series of lava domes and flows that form two islands near the center of the caldera. A submarine eruption took place in 1650 AD outside the caldera NE of Thera. The latest eruption at Santorini produced a small lava dome and flow in 1950, accompanied by explosive activity.