Storm sign!

Contributed by
Nov 28, 2010
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This is why I don't live in Montana:

natgeo_supercell

I don't want to live in a place where transdimensional spaceworms can appear in the sky and blast superheated steam straight down onto innocent earthlings.

Supercell photo be Sean Heavey for National Geographic; click to convectenate. Tip o' the kevlar umbrella to Astropixie.