There was a heavy mass of thunderheads in the sky, and few stars showed through.
I thought I noticed some thunderheads away off on the horizon when we first went up.
There came at last hot and stifling days when the thunderheads piled high in the west and the leaves hung sagging on the branches.
The thunderheads they had seen earlier in the day now spread and covered the whole sky with a dark pall.
When these thunderheads finally get all boiled into one and come a-runnin its a case of take to cover.
Laughter burst out in the earphones, and thunderheads clouded up in Freddy Farmer's eyes.