Scott Lincoln
EF4
Latest BR 1-2 imagery indicates an odd hook echo, with high reflectivity (55+ dBz) within the hook echo well separated from the main core of the storm by 30-35 dBz. It looks like a damage balls signature, but I haven't seen anything out of the NWS for that one yet. Velocity imagery is quite impressive with that stor, with a relatively persistent TVS (now with maxdv of ~130kts).
Which radar site and what time did you see that? I'm having trouble seeing the same thing. So far everytime I've noticed a detached appendage on that cell its appeared to be associated with a DRC.