Honestly, after taking a close look at these photos and others, I have to agree that the 2005 Bham tornado was a stronger F3 candidate than the one in 1931. I forgot just how much exterior wall loss there was.From what I've seen, upper floor exterior wall loss was actually more substantial in the 2005 event compared to 1931. The 1931 tornado looks like it was a mid-range F2 to me, but there could be something I missed of course. TBH, for the 2005 tornado I'd probably side with a low-end F3 rating considering one home lost all of its upper floor exterior walls: