A supercell merger took place northwest of the Tulsa (INX) RDA.  Mergers are always tricky; often there is no way to know whether it will be constructive or destructive in nature, but one should always “beware the merger!” when making warning decisions.  In this case, the merger takes place, and a small area of enhanced rotation becomes evident on velocity.  It would be tempting to issue a Tornado Warning in this case, but the weaker NMDA and NTDA output might give me pause to wait another scan or two.  If I waited, the next few scans would show a weakening trend in the velocity fields.  I suspect that if I had gone with a warning, I would quickly come to regret it.

– Rabbit