I wouldn't bother going south now, stay north for anyone who lives N. Southern stuff I feel will tend to a bit of a rainband, patchy in nature with the odd strike, fresher cleaner cells shoulf fire up on the top edge of the band across the Spencer and YP and then head in towards the burbs.
Very unstable through the mids, and sensational convergence keeping this line going with assistance form jet aloft and the classic nocturnal cooling.
Great image Azza, that is one seriously high base, looks like nothing and then a CG!
TS
