Greece's Santorini volcano has been found to be capable of producing more explosive eruptions than was previously thought. Since the overall volcano is in a long term rebuilding stage, it was thought that any future eruptions during the next several hundred years would only at worst be moderately explosive. However, recent analysis has shown that Santorini's 726 CE eruption was actually 1 to 2 orders of magnitude more powerful than previously thought, suggesting the potential for a similarly explosive event to occur in the future. While unlikely to occur during any specific future eruption, this discovery will cause hazard maps and models of the Santorini volcano to be updated.

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Sources/Citations:
[1] Preine, J., Karstens, J., Hübscher, C. et al. Hazardous explosive eruptions of a recharging multi-cyclic island arc caldera. Nat. Geosci. (2024). https://doi.org/10.1038/s41561-024-01..., CC BY 4.0
[2] VEIs, dates/years, composition, tephra layer name, DRE estimates, and bulk tephra volume estimates for volcanic eruptions shown in this video which were assigned a VEI 4 or larger and are not the Kikai Caldera's 5284 BCE eruption are sourced from the LaMEVE database (British Geological Survey © UKRI), https://www2.bgs.ac.uk/vogripa/view/c..., Used with Permission
[3] Source of Volcanic Explosivity Index (VEI) methodology and criteria: Newhall, C. G., and Self, S. (1982), The volcanic explosivity index (VEI) an estimate of explosive magnitude for historical volcanism, J. Geophys. Res., 87(C2), 1231–1238, doi:10.1029/JC087iC02p01231. Accessed / Read by    / geologyhub   on Oct 5th, 2022.

0:00 A New Finding at Santorini
0:59 Santorini Eruption Cycle
1:19 Post Caldera Vents
3:29 726 CE Eruption
4:00 Analysis