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I have been following the last events of Cumbre Vieja eruption since it started last month. Trying to grasp some basic knowledge of volcanology I have seen the eruption is classified as VEI-3 in the English Wikipedia and VEI-2 in the Spanish Wikipedia. According to the ejected volume it makes sense to say it is a VEI-3, but the experts on public television in Spain are not being that focused on the ejected volume but the type of eruption, which is Strombolian, so a VEI-2 for that case.

Here you can see the difference:

https://en.wikipedia.org/wiki/Volcanic_Explosivity_Index

https://es.wikipedia.org/wiki/%C3%8Dndice_de_explosividad_volc%C3%A1nica

Which is the real category of the current Cumbre Vieja eruption?

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    $\begingroup$ your question highlights some of the problems with the VEI indexing because the Cumbre Vieja eruption is a VEI 1-2-3 at the same time,i hope you can get a good answer to this question. $\endgroup$ Oct 26 at 14:14
  • $\begingroup$ The Volcanic Emergy Plan of Canaries (Pevolca) has raised the level of VEI from 2 to 3 due to the amount of ejected material. The spokeswoman of the committee, Carmen López, said that the mechanism of eruption and the explosivity remains the same. So this change of the VEI is strictly related with the volume ejection. It is still interesting to know if a VEI of 4 can happen because of the volume ejection even though the structure is still strombolian. link $\endgroup$
    – M_1
    yesterday

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