There are five primary cloud types: stratus, cumulus, stratocumulus, cumulonimbus and cirrus, each of which are subdivided into different genera based on altitude.
Storms that were strong enough to make these features--called above anvil cirrus plumes, or AACPs-- were also more likely to have severe tornadoes, large hail, and high winds.
He looked at the sky and saw the white cumulus built like friendly piles of ice cream and high above were the thin feathers of the cirrus against the high September sky.
I used to be observant and find that they would do it in late afternoon so that those real high, thin clouds, which they will tell you those are cirrus clouds, but they're not, they're artificial.
His tail floats now behind him, now above him, level or gracefully curled like a wisp of cirrus cloud, every hair in its place, clean and shining and radiant as thistle-down in spite of rough, gummy work.