The cold rain had halted, but the sky now boiled with scud clouds that raced inland furiously.

The sky was boiling with clouds.

The sky was boiling, and jagged bolts of lightning flashed green nearby.

To the west, the sky boiled with fierce purple thunderheads.

The sky boiled with thick purple clouds, the usually placid bay seethed with foam.

As the sky to the east, so clear and blue a moment before, boiled with ominous blackness, Hitler's eyes took on the look of a hunted creature.

The sky boiled in time to the beats.

The whole sky was boiling with fast-moving grey clouds.

It wasn't raining yet, but the sky was boiling like a pot of film noir potatoes.

His skies boiled and burned, or they reflected the eternal in the eyes of a baby.