Thursday afternoon convection continues to cook in the northern Texas panhandle. Several mesocyclones were detected by the different algorithms along a broad, down radial shear zone. The values from the operational MDA (bottom left) and digital (bottom right) were very high, topping out at 24+ LLRV for all three mesos detected at the lowest scan. That is much higher than values seen for some tornadic supercells earlier in the week, and does not match the velocity data with no strong, tight couplets evident. The new MDA is much more restrained and actually has the strongest RV values above the lowest scan, which matches up with the velocity data much better as the values should be lower with broad, weaker areas of rotation.

Dave Grohl