Storm chasers were treated to a dramatic lenticular cloud formation in southwestern Nebraska on Thursday, June 9.Video taken by John McKinney, who told Storyful there were “hundreds of storm chasers observing… from many states and other countries,” shows the UFO-shaped cloud.“We enjoyed this smooth sailing saucer tonight just northwest of McCook, Nebraska,” wrote McKinney on Twitter. Credit: John McKinney via Storyful