Hello all, I stumbled into this video today of a Tornado that occurred a few years ago in southern Indiana. Few videos I have seen of tornado impact have captured the destruction on video as clearly as these cameras did from both the interior and exterior. This tornado occurred in March of 2012 in Henryville Indiana. It was an F4 that roared through town destroying their high school, homes and many other things. It did produce some fatalities unfortunately in other parts of town but nobody was injured at the school. The local high school captured some pretty good video of just how fast the total destruction can be even when grazed by its less powerful outer F3 force winds (175mph) which are furthest from the center of circulation yet still part of that main circulation.... the outer wall so to speak. While this high school is in a small town in a rural area, they were equipped with a very high end security camera system that recorded continuously from numerous cameras in 720p into a dvr server. It was donated to the school apparently by a company that builds security camera systems. This system was robust enough that it caught much of the damage being done to the high school... impressive. They rebuilt the high school the following year, and the camera system donor came back and installed a brand new system in their new school. One of the area's local TV news stations assembled several videos from the security camera server at the high school. After viewing it, I thought it did a good job of giving a first person view of just how powerful these things are. The damage being shown here is being done by the outer wall of the tornado, the center core would have left little standing with a direct hit. They have embedding blocked but you can see it on youtube with the link in the block The video below is from just inside the gymnasium What is astonishing is how fast a whole lot of stuff vanished when it grazed that gymnasium.