I personally lived through Carlisle this past weekend, as I am the Marketing Director for Keisler Engineering, the largest aftermarket transmission builder in the US for classic cars. First off, the weather was to say the least oppressive, high 90's every day, and no where to get out of the heat. Only a very few vendors had generators to run fans. Each morning we bought a case of water & gatorade, but we ran out for the six of us by 3 PM each day.
The storm came at 7 PM Saturday night, certainly a micro burst. 18 people were injured, most slightly, but one guy had a tree fall on his car while he was in it, & I think his arm was broken. The tent covering 20 plus '57 Vettes fell in. Many vendor tents looked like spagetti, I saw 2 inch tubular steel bent like pretzels. The custom 65 Vette belonging to Keisler took a 1 inch steel tent post through a rear quarter panel. Luckily my brand new Z06 was in Harrisburg. We returned to the fairgrounds & it took until 1 AM to pick up our tent remains.
It's going to be interesting to see how folks like Haggerty respond to this diasater. No one was killed, but many vendors of clothing, etc may have lost their inventory.