Thick clouds had come up and put out all the stars.

The sky was clear, but he could see thick clouds toward the north.

The thick clouds seemed to be in the right place yesterday.

Thick cloud like a layer of something more than night.

The fire, which sent thick clouds of black smoke into the air, was brought under control in 45 minutes.

He became aware of a weight, a thick cloud in his mind.

No, it was a big thick cloud getting ready to rain on them.

There'll be thicker cloud moving in from the south west.

But soon after that they flew into thick cloud and could see nothing.

Oklahoma and half of Texas were covered with deep, thick clouds.