Since the fortieth anniversary of this outbreak is coming up, i'll pose this question to the experts on this forum: what made this outbreak so destructive? We get outbreaks with a comparable number of tornadoes every year, what made this outbreak such an overachiever? Almost every tornado was strong to violent, and out of the 38 significant tornadoes in the outbreak, 19 were F-4 and F-5's. These are percentages even the Super Outbreak, which had 30 violent tornadoes out of 95 significant, can't match. The intensity of this outbreak puzzles me; while the shear, helicity, etc. must have been great, 60-65 dewpoints seem marginal for an outbreak of this intensity?