I am probably in the minority here, but I am not impressed with this ride. You probably don't remember what happened because it was not that memorable. It simulates a small tornado, with a fake cow flying about.
I am from the Midwest, and have been in a couple of tornadoes over my lifetime. I was really afraid going into this ride/show/whatever it is. I don't back down from stuff I'm afraid of, so I forced myself to go. Afterwards, I though, "this was so lame." Watch the Discovery channel and you will really see what a tornado is.
I could see how this ride could be a hit, but I think that if you have to close down something, this would be the one to close.