Question id 494 - Meteorology - ATPL - Airline Transport Pilot license

On the windward side of the mountain just above the 'cap' cloud
Just above the lenticular cloud on the windward side
In the vicinity of the 'roll' cloud or rotor zone beneath the first wave on the leeward side
Between the troughs of the waves particularly 30 NM to 50 NM downwind and close to the tropopause