Damaging winds are rarely considered to be a substantial threat with elevated convection due to the presence of a near-ground stable layer. However, a close examination of this case suggests that unique characteristics of the near-ground stable layer were critical to the damaging wind threat. Regional soundings illustrate a steep, but shallow frontal inversion beginning immediately above the surface, topped by a layer of very steep lapse rates and large potential instability. The combination of large elevated CAPE and strong vertical wind shear above the frontal inversion provided an environment very favorable for elevated supercells. The unique thermodynamic profiles also supported large downdraft CAPE values despite the near-surface stable layer. Local surface observations in the vicinity of this specific supercell revealed a meso-gamma high pressure center within the storm's rear flank outflow, with surface temperatures the same or warmer than pre-storm environment. The warmer temperatures within the storm outflow suggest the possibility of overshooting downdrafts of mid-level origin. This same mechanism may also help explain occurrences of damaging winds along the cool side of surface boundaries with larger convective complexes.
We will also provide documentation of a tornado produced by this supercell as it traveled northeast of Kansas City into Ray County Missouri. This may be the only well-documented tornado with an elevated supercell, in an environment with no surface-based CAPE, in the past few decades.