TORP had an issue handling the tracking of objects along a linear AzShear maximum where a weak tornadic circulation was also developing. Initially, an object with ID 340 was identified with low probabilities (27%) along a linear AzShear feature associated with a region of convergence northwest of LWX.

Note: Ignore the trend on the left throughout this post – it was slow to update on objects being clicked in the PHI Tool and doesn’t necessarily represent the actual trend in objects being discussed.

On the next scan, ID340 continues to track the same part of the linear AzShear feature, still with low probabilities, while a new object (ID171) appears with a 95% probability just to the south where a circulation is rapidly strengthening and a tornado is ongoing or forms shortly thereafter.

In the next scan, ID340  jumps south to the tornadic circulation, where ID171 is still tracking the circulation for its second scan in a row.

ID171  then drops off on the next scan and ID340 becomes the primary object tracking the tornadic circulation for the next several scans.

– Mr. Peanut