How to Identify Tornado Vortex Signatures

Join 2027 Storm Chasing Tour: https://stormchasercoaching.com/2027-... Join Discord community:   / discord   Join the Chaser Academy:    / @stormchasercoaching   Get FREE Chaser Safety Ebook: https://stormchasercoaching.com/eight... Get FREE Dixie Alley Ebook: https://stormchasercoaching.com/dixie... Buy SCC Merch: https://storm-chaser-coaching.mysprea... Follow SCC on Twitter: https://x.com/TornadoCoaching Follow Trey on Twitter: https://x.com/ConvChronicles Tornado Vortex Signatures (TVSs) are one of the most critical — and misunderstood — tools in a storm chaser's radar toolkit. By watching this video, you'll learn exactly how to identify, measure, and verify TVSs in velocity data so you can confidently distinguish a true tornado signature from radar artifacts or weaker mesocyclone activity. 00:00 Radar Velocity & Wind Shear Basics 1:51 Cyclonic vs. Anticyclonic Rotation 2:47 Intro to Tornado Vortex Signatures 4:55 TVS Size, DeltaV & Vrot Explained 5:36 How to Verify a Legitimate TVS 7:25 TVS Location in Supercells & Hook Echoes 8:11 Squall Lines, Bow Echoes & Bookend Vortices In this lesson, we dive deep into one of the most important radar signatures in severe weather analysis — the Tornado Vortex Signature (TVS). Starting with the fundamentals of Doppler velocity data, we break down how to read inbound and outbound velocities, identify shear couplets, and distinguish between convergence, divergence, cyclonic rotation, and anticyclonic rotation. From there, we define what a TVS is, how to calculate deltaV and rotational velocity (Vrot), and what thresholds the National Weather Service uses to officially classify a TVS — including how distance from the radar affects detection accuracy. Beyond the numbers, we explore the qualitative indicators of a legitimate TVS: radial symmetry, vertical continuity, persistence across scans, and proper storm-relative positioning within a supercell's hook echo or rear flank downdraft. Finally, we examine TVS behavior in squall lines, bow echoes, and bookend vortices — giving you a complete picture of tornadic radar interpretation across multiple storm modes. #stormchasing #weather #tornado