This is all I could find, but it sure seems MUCH louder to me...how loud is a pair of top fuel dragsters running down the track? Those will definately hurt your ears, you can feel the entire ground shake as they pass.
I would love to see a measurement taken of just exactly how loud that is from about 10 ft. away. (any closer and you'd be torched by the exhaust)
http://listverse.com/2007/11/30/top-10-loudest-noises/