Time-Lapse: Spinning Up a Supercell Over Wyoming

Yesterday, while I was enjoying relatively clear skies in Colorado, just one state north of me the weather was just a tad more dramatic. A group of stormchasers who call themselves Basehunters took a drive from Wright to Newcastle, in northeast Wyoming, and got seriously jaw-dropping footage of a supercell forming right in front of them. Definitely make that HD and full screen. Ye. GADS. That rotating mesocyclone (the rising, spinning vortex of air) is a monster, and made the hair on the back of...