There are some figures regarding this tornado that may never be known. For example, the full monetary cost does not appear to have been publicly released, so all official databases list $0 in damages. Based on what is known about many of the homes destroyed, the expensive disruption of the Devon Plant’s operations for several months, and the destruction of Cactus 117, the total price tag was probably in the range of $100 million. There was at least one satellite tornado, and another mesocyclonic twister that merged with the original vortex. The maximum width found was 2,040 yards (1.16 miles), and the path length, accounting for all twists and curves, was 65.27 miles. The duration was approximately one hour and 49 minutes. There were nine direct fatalities and 181 injuries.
Using an enormous variety of resources, I was able to map the damage swath by EF-scale values and trends. It is very important to note that while some ratings (including most higher-end ones) were derived from what was already documented by the experts, a large portion is from my evaluations. The polygon mapping does incorporate all known information from surveyors, but it is NOT official material. Instead, the various swaths are my best attempt at showing the trends of any viable contextual evidence.
Here are some unofficial damage statistics I compiled during the mapping process:
Total residences: 567
Total non-residential structures (mostly outbuildings): 423
Residences rated EF0: 236
Non-residential structures rated EF0: 194
Estimated area that experienced at least EF0 tornadic windspeeds: 29,410 acres (46 square miles)
Residences rated EF1: 135
Non-residential structures rated EF1: 95
Estimated area that experienced at least EF1 tornadic windspeeds: 16,692 acres (26.1 square miles)
Residences rated EF2: 106
Non-residential structures rated EF2: 53
Buildings rated EF2+: 66
Estimated area that experienced at least EF2 tornadic windspeeds: 9,146 acres (14.3 square miles)
Residences rated EF3: 46
Non-residential structures rated EF3: 8
Buildings rated EF3+: 14
Estimated area that experienced at least EF3 tornadic windspeeds: 4,409 acres (6.9 square miles)
Residences rated EF4: 35
Non-residential structures rated EF4: 0
Buildings rated EF4+: 2
Estimated area that experienced at least EF4 tornadic windspeeds: 1,454 acres (2.3 square miles)
Residences rated EF5: 0
Non-residential structures rated EF5: 0
Estimated area that experienced EF5 windspeeds: 257 acres (0.4 square miles)
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