The 0-2km merged Azshear product showed multiple “hot spots” at the beginning of this particular storm. But which one is more important? Below is what the  merged AzShear looked like at 2023Z…

Without looking at velocity data you can’t really tell where the center of the storm is using the merged product. However, here is what the single-radar AzShear looked like around 2023Z…

The single-radar AzShear clearly indicates that the southern couplet in the merged product was where center of the rotation was located. This clearly shows how single-radar can provide additional information in a warning situation.