Dataset title: Thermodynamic observations in supercell storms obtained from pseudo-Lagrangian drifters in spring 2017 Contact: Paul Markowski, Professor of Meteorology, Department of Meteorology & Atmospheric Science, pmarkowski@psu.edu, 814-865-0428 Last updated 2018 Summary The dataset contains the first-ever thermodynamic observations obtained above ground within supercell thunderstorms using balloonborne probes as pseudo-Lagrangian drifters. Each probe is carried by a pair of balloons until one of the balloons is jettisoned; the remaining balloon and probe act as a pseudo-Lagrangian drifter that is drawn through the storm. The data are from three demonstration deployments in supercell storms in Oklahoma and Kansas during May 2017. Publications using these data: Markowski, P. M., Y. P. Richardson, S. J. Richardson, and A. Petersson, 2018: Aboveground thermodynamic observations in convective storms from balloonborne probes acting as pseudo-Lagrangian drifters. Bulletin of the American Meteorological Society, 99, 711?724.