June 21st was a day that had great potential. Very good shear, moisture and instability were in place across the high plains into the western Dakotas. An approaching shortwave trough would provide the necessary lift to spark intense supercells in southeastern Montana. One particular supercell formed near Baker, Montana and cycled several times as it entered northwest South Dakota. This storm would be responsible for a half dozen tornadoes we witnessed across northern South Dakota. The first tornado occurred as the storm really ramped up near Ralph, South Dakota. It would cycle several times and keep producing tornadoes all the way to near Eagle Butte where it dissipated late evening. The structure was some of the best of the season and several tornadoes were quite photogenic! Tour 8 scored big with this gorgeous beast!