Figure 1. Storm-relative velocity display from KVNX (Vance AFB) radar at 2224 UTC 8 May 2003, and path of F4 tornado through the Oklahoma City metropolitan area. Location of the highest gate-to-gate shear is shown where the outbound velocity is between 40 and 50 knots next to inbound velocity between 30 and 40 knots. KVNX is 104 miles northwest of the location of the strongest shear signature.