Tornadoes are fascinating examples of sheer power. Are they fascinating enough to get within 500 feet of one? No, no they are not...
Seriously. Look at the arc of the debris heading toward the vortex. There is no arc. It's just a straight-line wind zipping directly toward the center of the maelstrom. That means you are close.
This is from the extremely dangerous tornado that blew through central Oklahoma this week: