When Lightning Strikes Sand. Fulgurites (Latin, meaning "thunderbolt") Sometimes referred to as petrified lightning, they are natural hollow glass tubes formed by lightning strikes in quartzose sand, silica, or soil. (Wikipedpia)
Lightning Strike. First, researchers at the University of Florida in Gainesville captured this powerful photograph at right by firing a grounded wire into a cloud during a thunderstorm. You can see that the charge followed the wire straight down into the base tower, with other channels of electricity forming to its right.
An amazing supercell tracks across southern Nebraska, producing other-worldy storm structures. At times this storm looked like a giant tsunami in the sky. The supercell formed after two supercells merged near McCook Nebraska. It then tracked eastward as one storm till it died after midnight east of Hastings Nebraska.