At this time of year, severe storms set the stage for sprite formation. Mesoscale convective systems sweep across the Great Plains, cracking with intense electric fields that drive electrons up and into sprites. La Niña conditions in the Pacific Ocean may amplify this process.
Although the sprites were in Kansas, Smith saw them from Oklahoma. This weather satellite image shows the observing geometry.
Although sprites have been reported by pilots and storm chasers for more than a century, many scientists were skeptical. Can you blame them? "Doctor, I just saw a giant red jellyfish in the sky!" A turning point came in 1989 when sprites were photographed by researchers at the University of Minnesota and cameras onboard the space shuttle. Now sprites are in the mainstream. See for yourself.