FWD: Some Rotation Aloft with West Dallas Supercell Posted in Live Blogs on June 13, 2012 by Kristin Calhoun. 3DVAR 5km updraft helicity showing some enhanced values with the western supercell in the last 10 minutes. MRMS 0-2km azmuthal shear confirms what we see in KFWS 88D base data that any rotation is above 2km. SNELSON/TY