A strong circulation has developed in Dallas County, with Vr values of as much as 70-75 knots. Appropriately, the NTDA algorithm has identified a 99% chance that this is a tornado.

0216Z UPDATE

This feature appears to be a tornado based on base velocity analysis, but NTDA is assigning a probability of only about ~20%

Just after writing this post, an LSR of damage at this location was provided.

0224Z UPDATE

A small area of bad velocity data has been occasionally (but repeatedly) tripping off low-end NTDA detections near the KFWS radar site.

The detections have generally been <20% so in theory this could be easily ignored with a probability threshold.

–Insolation