OWL HORNS, DRCS, AND VORTEX COUPLETS

Image Above: "Owl Horn Signature stage."  Two pairs of vortex couplets	Image Above:  Numerical simulation evolving similar to radar structure displayed on the left.

Image Above: Vortex couplets become realigned.  DRC has formed.  Low-level cyclonic rotation is beginning to intensify.	Image Above: Numerical simulation evolving very closely to observed supercell on the left.  Note the location of the vortex couplets, and the presence of the DRC.

Image Above:  Vortex couplet still exists, but the cyclonic member is clearly beginning to become dominant (due to strong updraft located above?).  DRC is beginning to hook cyclonically around area of strong low-level updraft rotation.	Image Above:  Low-level rotation has intensified at this time.  Numerical simulation still resembles the radar structure displayed on the left.