A cross-section of the atmosphere over the Billings, Oklahoma, radar wind profiler (RWP) at 22:12 UTC on May 23, 2011. The x-axis shows the location of the RWP (-14.5 km) in relation to the SGP Central Facility (0 km). The y-axis shows height above the surface. The bar on the right-hand side shows reflectivity. Contours…