Mind-Blowing Cloud Formations You Probably Haven't Seen Before

Roll Clouds: Roll clouds can sometimes form in advance of the shelf cloud when a horizontal vortex forms in the atmosphere. It can then become detached from the structure as the storm decays and continue moving along appearing to be rolling horizontally across the sky. They are typically found along coastal regions resulting from a sea breeze or cold front. The picture we received was a result of storms that had been moving through the area the day the photo was taken.