Nice convection, but I always feel like thunder during frozen p-type that isn't snow is a bit of a cheat, because graupel, sleet, and hail just generate so much more frictional charge than dendrites. I mean, you have to have pretty intense convection for actual thundersnow in a synoptic storm, which is awesome and rare. LES thundersnow is cool, but I remember hearing thundersnow when I lived in Boston during the March 1993 coastal blizzard, and that made a huge impression on me. I think we can all agree that people who freak out about thunder during graupel or sleet events are rank amateurs.