Thunderless lightning...

[Dr.Sid]

Here is the link for my sound propagation tool .. and documentation. It does not however much describe WHY it works like this.

Here is the tool: http://subsim.questions.cz/sopro/sopro.1.9.zip
Here is the manual: http://subsim.questions.cz/sopro/doc/sopro.html

For start checkout the examples in the manual, especially the 'Surface shadow' situation.
And of course, yes, with common thunderstorm, the whole situation would be upside down :-D

 

[dafydd]

The brighter the flash...the closer the lightning usually is.

You're getting too technical now,the real scientists here will never be able to follow you. Red sky at night,sheperd's delight,is that next?