Why are thunder reverberations louder?

Cosmic Relief got good answers and realized he hadn’t considered the length of the bolt a week ago. Why are you going on about this now?

Cosmic Relief, it sounds like you are pretty happy with your new understanding of thunder, without invoking reflections anymore. I don’t know where online to find the books I read. JWT Kottekoe’s Scientific American reference sounds familiar - I usually read Sciam - I bet it’s an excellent discussion that would take you further, and I’ve bought digital reprints from their web site for maybe $3 or so. Happy crackling!