S-Band Polarimetric Analysis of the 23 May 2011 Oklahoma Record Hailstorm Using High-Resolution Observations during HailSTONE
This research examines dual-polarization data from the Norman (KOUN) prototype radar synthesized with the high-resolution hail dataset collected by HailSTONE. This observational dataset allows for a meaningful validation of polarimetric S-band radar signatures associated with giant hail by representing the true hail-fall character of the storm and mitigating the traditional spatial and temporal limitations inherent to Storm Data. Polarimetric radar presentation of hail fall, a quantitative comparison of low-level polarimetric variables to hail sizes, and the utility of polarimetric signatures in forecasting hail size will be discussed. With the ongoing national upgrade of the Weather Surveillance Radar 1988 Doppler (WSR 88D) network to dual-polarization, this study seeks to further demonstrate the increased benefit polarimetric data provides to operational meteorology.