Atrus glanced up at the ominous sky, then spoke again.

They hung almost motionless in the gray, ominous sky.

We drove to Schiehallion along snowy roads, under a grey and ominous sky.

Under an ominous sky, it's a sure sign of decline.

Then more shadows darkened the sky, large and ominous.

"The landscapes are pure inventions, often with huge, ominous skies and puffy clouds."

She was riding, under a strange ominous sky, like spilt blood on the sands of the Drylands.

But the old man came in a cluster of men, outlined under that dark and ominous sky, the lightning blazing beyond his head.

At their backs were the sheer walls of the cliffs lifting stark black fingers against the ominous sky.

Yet still that open narrow funnel of clear calm air reached right up to a dark and ominous sky.