Here’s a quick, classic example of where meteorological situational awareness plays a large role in storm interrogation while using the NTDA/NMDA algorithms. A first look at Base Reflectivity shows higher probabilities of NTDA/NMDA at a position of the supercell well detached from where you would commonly expect strong, deep rotation (notice the BWER also in the top left, cool!).
![](https://inside.nssl.noaa.gov/ewp/wp-content/uploads/sites/22/2021/05/false_signal_20210519_dusty_1.png)
![](https://inside.nssl.noaa.gov/ewp/wp-content/uploads/sites/22/2021/05/false_signal_20210519_dusty_2.png)
Sure enough, looking at SRM confirms messy and anomalous values of SRM likely associated with the back end of a boundary or front. Another example of anomalous values from both algorithms and how situational awareness can avoid miss identifying aspects of a supercell.
– Dusty Davis