[blam]

"Glancing at the list it seems pretty flawed; Crater Lake's cataclysmic eruption was a VEI 7, not 8...I've never seen it classified as a supervolcano. The Australian volcano is very old and really can't be considered as potentially active. Some of the others listed were not VEI=8 eruptions either."

That's the only list I found. I don't know about it's accuracy.

[Strategerist]

That's the only list I found. I don't know about it's accuracy.

The reality is that no geologist has actually sat down and made a list in a formal manner; there's a paper coming out from a couple of British guys in the Bulletin of Volcanology soon, though.

One problem is age cutoff; there are a ton of these that are essentially extinct; there are supervolcanic calderas all over Colorado, Nevada, Idaho that haven't erupted for 10 million years, have no seismic activity, and are essentially dead.

Regarding size people seem to have settled on VEI=8; Kikai, Mazama (Crater Lake) were VEI=7.