Ahead of the 767's black nose, the clouds were rapidly thinning.

Wherever the clouds thinned, they revealed a tinge of green.

The clouds thinned still more and fled away in rags.

The gale was breaking up, and the clouds were thinning.

The cloud thinned and I buried two more grenades ahead of me.

The slowly expanding cloud thinned and let in a little light.

There's been some sleet at times this morning, but the clouds are thinning.

The clouds thinned, broke apart, and the giant star looked down upon the land with its cold, blue light.

The clouds thinned for a moment, but Max held his gaze against the increased glare.

The transitional clouds were thinning on the screen, and he tipped it so she could see.