Super-cell Lightning, Snyder, Nebraska Under a super-cell thunderstorm, a "wall cloud" or "pedestal cloud" may form. This is frequently associated with tornadoes and micro-bursts. Here, a "cloud-to-ground" lightning bolt strikes from a wall cloud.
Atlas V Arc of Light: Rocket launched with twin Radiation Belt Storm Probes sent to explore the Van Allen Belts that surround Earth. Astrophotographer Mike Killian took this photo from Cape Canaveral Air Force Station in Florida Aug.
Image by Mike Hollingshead: 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.