Whoa. This Video of a Supercell Thunderstorm Is Beautiful and Terrifying.
This video of what meteorologists call a "low-precipitation supercell" may as well be entitled "Twister II: The Return."
Some liken these LP Supercell things to "motherships" because that's what they look like coming down. Check this video of one forming in eastern Wyoming, at the 1:00 mark in particular. Then hold on to your seat, Earthling.