Encara no tenim significats per a "black thundercloud".
1A black thundercloud rushed up out of the South, and seemed to leap all the arc of the sky, in a single instant.
2He re-joined in 20th before pitting and retiring as black thunderclouds loomed.
3Black thunderclouds barred all sunlight; the world was dark.
4She turned her own eyes away, finally, and looking at the mountains saw that black thunderclouds were rolling up over the Eagle Rocks.