section_path: May/May 18–21 (United States)
section_name: May 18–21 (United States)
paragraph_text: May 18–21 (United States)
  
  Another powerful trough ejection, coupled with deep moisture return from the Gulf of Mexico, prompted another damaging tornado outbreak, moving from the Southern Great Plains towards the Southeast. Numerous tornadoes touched down, several of which were strong to intense. On the 18th, an EF3 tornado caused severe damage in the town of Grinnell, Kansas across its long path, while an EF1 tornado caused four injuries when it struck Gordon, Texas. After dark, a powerful, cyclic supercell developed in south-central Kansas, eventually producing a long family of eight tornadoes, five of which were rated EF3. Two of these prompted tornado emergencies: one as it approached the towns of Greensburg and Brenham, and another that directly hit the small town of Plevna. Tornado activity shifted towards the Southeast by May 20, and in the evening, another tornado emergency was issued for an EF2 tornado that went through Madison, Alabama, dissipating just before reaching Huntsville. In all, 126 tornadoes were confirmed from the outbreak.