Very large, powerful convective cells over Borneo. We avoid them like the plague..100nm deviations not unheard of, although 20-40nm more common!
True to say though...often, the cloud surrounding these cells may appear benign, but, the same type of radar returns have completely different characteristics of turbulence, from one cloud to the next!
Best to give a wide berth.
No inference that the Qantas crew were doing other than this, is intended!
Clear air or CB related?
