A cloud began to form between himself and the sun.

Too bad the idea hadn't come to him earlier; now, the clouds were beginning to peter out.

But then an angry black cloud began growing over the city.

In the last week of the campaign, the clouds began to lift.

Around 3 pm, clouds began to build, and the sky became quite dark.

The rain had stopped now, and the clouds were beginning to break.

Then at last clouds begin to form in that hot, bright sky.

Clouds had begun to clear away here outside the valley.

Then it died away, and the cloud slowly began to fall apart.

In the east the clouds were beginning to look ominous.