Brett Roberts, a graduate university student in meteorology at the University of Oklahoma and storm chaser, captured some of the most remarkable photographs of thunderstorm structure and lightning happens on last Friday, June 14. The photos were taken in West Point, Nebraska.
A supercell is a thunderstorm that is characterized by the presence of a mesocyclone: a deep, persistent rotating updraft. For this reason, these storms are sometimes referred to as rotating thunderstorms .Of the four classifications of thunderstorms (supercell, squall line, multi-cell, and single-cell), supercells are the overall least common and have the potential to be the most severe. Supercells are often isolated from other thunderstorms, and can dominate the local weather up to 32 kilometres (20 mi) away.(wikipedia)