FTDK - I suspect them be wave bars - given the closeness / height, probably shearwave at a guess... thermic lower down?
Its interesting! If you look at the first pic it looks like the cloud has been twisted up like you do when wringing the water out of a towel.
Can't say I have ever seen anything like it before.
ForkTailedDrKiller failed met...
CASA to send notice to FTDK requiring attendance at a remedial Bob Taite met course.....
It was a long time ago! These days I only remember the 4 killers: 1) stratus cloud; 2) CBs; 3) icing and 4) mountain waves!
Dr 