Flying to the Channel Islands late last summer I noticed classic 'mammalian cloud' formations. I've not seen it since and can anyone out there explain how/why they form? I know I should know but its been a while since I sat the ATPL exams! Many thanks..
"Mammatus are formed on the underside of a thunderstorm anvil and are a rare example of clouds formed by subsiding air. They are often seen after the worst of thunderstorm has passed. The warming produced by the sinking air in the anvil causes evaporation and the cloud droplets form transparent water vapour at the edge of the cloud."
You have led a sheltered life, airtaxi. The latin term mammatus refers only to a (relatively) small part of the mammalian anatomy. Recall the shape of the clouds you saw and try again - I'm sure it will come to you unless, of course, you were bottle-fed.