Low Level AzShear (0-2km) correctly identified an area of rotation associated with the western supercell, however, AzShear was also saturated above 0.01 along the leading edge of the bow echo in the MCS as well. While it’s good to drawn attention to the latter area, as it was producing severe wind (61kts), it was not tornadic.  Additionally, there is some noise in the merged LL AzShear that wouldn’t exist in the single radar AzShear. I believe single radar AzShear would perform better in this situation.

-Tempest Sooner