Only as Good as the Velocity Data

KEWX – 22:47

Good example to watch the quality of the velocity data…as it could lead to unrealistically high NMDA and NTDA.

Note the very high SW values in lower left hand corner. NTDA probs were near 87% with max/min velocity diff of 51kt. Granted this signature was nearly 100mi from the radar, with the center of the beam nearly 10K ft AGL…so probably not using this for warning decision…but it was still a good reminder for me to QC the velocity data and ask myself “does this make sense”.