Andrew, I've found the best place is where it isn't raining or
drizzling. This might seem obvious, but finding that area is the challenge.
I prefer the 'warm sector' quadrant of supercells. That is, to SE of
the updraft, whether it has a wall cloud or not. With classic SW
flow aloft, this is often clear of precip... So from E of the wrapping,
or any, gust front to S of the mesowarm front, (inflow bands),
that stretch E of the updraft along the core. This is for ambient
light shots of lighting or after dark... But after dark on Sups I
wouldn't recommend for only the more experienced chasers...
Also to the W of the cell... SW of the updraft in either a clear
RFD, Rear Flank Downdraft. or W of the core far enough to
not have rain. A far bit off, 10-20 mi?, will often yield real
nice whole storm lightning shots when S or SW or W of the
updraft... I like SW if it's moving NE... that is, straight behind
its line of travel...
http://www.nealras.com/pics/
nealras
oops, sorry Tim... habit....
Neal Rasmussen