And as for the “why is that not applicable?”, it comes down two things. The first the fact that the “look” of a tornado is a nebulous, non-quantifiable concept that cannot realistically be measured or graded on a scientific manner, and would involve even more human subjectivity than surveying damage. The other issue is the inability to establish strong enough correlation between “look” and damage intensity for “look” to have any statistical weight. For every debris filled, churning, **** your pants stovepipe that caused EF4+ damage, you have your smaller pool of debris filled, churning, **** your pants stovepipes that did not. In addition, you have your smaller pool of dusty bird farts and whispy blobs that slabbed and obliterated homes. While those two pools may be smaller, they are still large enough to make “look” a non-useful concept in the world of tornado intensity estimation.
