Multiple stages of storm development populate this shot. In the middle, a robust towering cumulus with congestus builds under the shadow of mature storms’ collective anvil, bearing mammatus. That tower is surrounded by a smaller, shear-tilted cumulus updraft in front, and still smaller pieces of barely convective fractocumuli. Meanwhile, an even deeper tower in the distant, sunlit background develops an anvil as a young cumulonimbus, later becoming a supercell in its own right. So did the shadowed, foreground activity, albeit briefly before being undercut by outflow from the pre-existing storms. All this took place on a moving stage that shifted southeastward from this area, the Pine Ridge Reservation in South Dakota, southeastward into the adjoining Nebraska Sandhills.
2 W Oglala SD (1 Jul 25) Looking ESE
43.1857, -102.7789