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!

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