March 18, 2012

Target: Shamrock, Texas

Early stages of a long-lived supercell near Hollis, Oklahoma

Early stages of a long-lived supercell near Hollis, Oklahoma

Early stages of a long-lived supercell near Hollis, Oklahoma

Early stages of a long-lived supercell near Hollis, Oklahoma

Early stages of a long-lived supercell near Hollis, Oklahoma. The storm underwent some mergers at this time. Note the lowering in the background, which belonged to the storm to the west of the Hollis, OK storm

Early stages of a long-lived supercell near Hollis, Oklahoma. The storm underwent some mergers at this time. Note the lowering in the background, which belonged to the storm to the west of the Hollis, OK storm

The storm produced multiple tornadoes. This very brief elephant trunk tornado formed near Reed, Oklahoma

The storm produced multiple tornadoes. This very brief elephant trunk tornado formed near Reed, Oklahoma

Once the supercell matured, it took on an amazing sculpted structure

Once the supercell matured, it took on an amazing sculpted structure

Once the supercell matured, it took on an amazing sculpted structure. Note the small elephant trunk tornado just to the left of the precipitation shaft

Once the supercell matured, it took on an amazing sculpted structure. Note the small elephant trunk tornado just to the left of the precipitation shaft