Building off the backside of an older, outflow-churning storm, this young supercell surfed the outflow southeastward for a bit, somehow cranking up a stout midlevel mesocyclone behind the scuddy shelf cloud. That arcus teemed with tilted towers—narrow updrafts of very moist, highly buoyant boundary-layer air scooped up by the forced lift of the outflow surge, then launched into the broader storm. The mesocyclone somehow would become at least briefly surface-based soon thereafter, with an impressive “whale’s mouth” along the trailing part of its rear-flank downdraft.
7 NNE Fairfield TX (10 Jun 23) Looking W
31.835, -96.1478