Some data on super volcano's and why you should be scared!

[Matt-hurricanewatcher]

http://en.wikipedia.org/wiki/La_Garita_Caldera

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

A single eruption with > 10,000 km³ of ejecta volume is known: the Fish Canyon eruption (c. 27 Ma ago) of La Garita with a VEI of 9.2.[1]

Also Yellowstone only 2,500Km^3
And Toba 2,600Km^3 that almost wiped out the human race.

MY GOD A VEI 9+ that is like getting a cat6 Tornado or hurricane. It would wipe the human race off this planet in we would have a thousand year "nuclear" winter like thing.

This La Garita thing would kill us all. In it with Yellowstone and many other area's of interest are within the United states.

[Aslkahuna]

The article says that it is extinct unlike Yellowstone which is dormant.

Steve

[Matt-hurricanewatcher]

The article says that it is extinct unlike Yellowstone which is dormant.

Steve

Ok, then could Yellowstone come close to a VEI 9 if it where to go at once?

[Numlock]

Interesting stuff. Not much point in "being scared", though. When it happens, it happens.

[Squarethecircle]

The largest eruption estimated was 250 million years ago (not a coincidence IMO), when Siberia blew up. There's not much info on it, and it was 250 million years ago, so it's likely to be off by a bit. But it is a very popular PT extinction theory.