This is generally pretty constant over an area so the cloud starts at approximately the same altitude.

The storm was letting up; the clouds were starting to roll away.

Schneider was aware that the clouds were starting to lift and they had to attack immediately.

Outside, mucky clouds, like balls of black wool, started to attack from the west.

A few light clouds started to brighten, taking on the colors of a sunrise less than two hours away.

The clouds then started to rise toward the enveloping ship above the planet.

Dark clouds were starting to gather, and I heard a distant rumbling.

The clouds started to turn black and the air got windy and cold.

Chakotay looked up just as the clouds started to clear.

Space seemed to cloud over and the cloud started to assume a shape.