Huge dark grey hail clouds loom over Des Moines, Iowa
Huge dark grey hail clouds loomed over Des Moines, Iowa, and swirled towards the filmer.
Jason Ostrander, the filmer, said: "Caught this mothership/storm moving toward me from Grimes, Iowa, to Des Moines with a DJI Phantom 3 Pro. And if you think this scene is intense, let me tell you that these big, dark clouds came with a 2.5-inch hail.
"The hail was undoubtedly baseball-sized. Those pieces were really capable of doing a lot of damage."
This footage was filmed on July 9.