To the surprise of many, the Hunga Tonga Hunga Ha’apai volcano is still likely erupting right now.

Additionally, a survey of the ocean floor was just published, revealing that the January 15th eruption was far larger than originally thought.

In fact, the eruption truly was a VEI 6, as indicated in part by the 4-kilometer-wide caldera which is now 750 meters deeper.

This video will discuss how the size of the eruption was reached, and why many scientists including myself got the initial size of the eruption so wrong.

Disclaimer: Despite appearing conclusive much of the information stated in this is still rather preliminary.