Here's the original question: > This brings up a question for the house -- what is the loudest naturally > occuring sound as far as SPL's -- a massive earthquake, a massive > hurricane or tornado, or the thunder after a big nearly > lightening-to-ground strike (or perhaps the thunder overhead after a big > cloud-to-cloud strike)? As far as human hearing goes, I'd think thunder > would sound loudest, but I wonder if earthquake is most SPLs because of > the subsonic waves? On Monday, March 16, 2015 2:14 PM, Lou Judson <[log in to unmask]> wrote: Not according to the subject line! <L> On Mar 16, 2015, at 10:13 AM, Dave Burnham <[log in to unmask]> wrote: > I don't think the space shuttle counts because the question was about natural sounds, not man made. > > db