[Jack Hydrazine]

Volcanic explosivity index

[Jack Hydrazine]

More info about the VEI.
https://en.wikipedia.org/wiki/Volcanic_explosivity_index

[Fungi]

The year without a summer:http://www.survivalcentral.net/could-2011-be-another-year-without-a-summer-like-1816/

[piytar]

Yellowstone going off (not if, but when) will likely be an extinction level event...

[piytar]

Ooops, forgot to note: The when could be tens or even hundreds of thousands of yeard from now. Not likely to happen tomorrow...

[ducttape45]

You show the Yellowstone Caldera in that graphic. I betcha that's the one sleeper that no one is really counting on erupting, but I fear is the one MOST LIKELY to erupt! And when it does, the United States is history.

What I fear most is a simultaneous eruption of the Yellow Caldera, the New Madrid, San Andreas and the East Coast Fault. If that happens, gawd, the destruction would be beyond anything we've ever seen, or will ever see.