I’ve seen some preliminary reports on the eruption. Guesses are in the range of VEI upper 5 to lower 6 on the Saturday blast. There was a smaller eruption on Friday. Vesuvius(79 AD) and Mt. Halens eruptions are estimated to be in the 4-5 VEI.
OK..I looked and Krakatoa was a 6.
So if this one registers officially at a 6, we have a eruption as large as that and Pinatubo.
The Professor appears right..if that thing was largely above water...
Southern hemisphere will see effects. Interesting to see the weather down that way this coming winter.