I think it was much more like the previous 3+ days of rain that kept the show attendance down...:^)
It was getting a “Sun and Mud” nickname before this tornado.
And last year, the heavy rains turned Oshkosh into Sloshkosh (they even printed those T-shirts up, as well as H2Oshkosh).
I know that the builders of the experimental aircraft will be able to get back to repairing their aircraft... anyone hear about any antiques, classics or warbirds?