The downtown skyline, once ominously dark at night, is a brightly lighted collection of renovated office towers.

I was still in the field, but the sky was now ominously dark and a big storm was almost upon me.

Although they were currently sailing through an area of thinner vapor, a thick, ominously dark cluster of clouds lay dead ahead.

They had spread their plaids over him to keep him warm, but the cloth covering his legs was ominously dark with wetness.

The sky against which they were silhouetted was ominously dark.

They came out of the museum at a little past three, into blustering winds and a day already ominously dark.

His choices were two: he could either ride on through the ominously dark woods or return to Toomish and its uninviting inn.

But the swarm took to the sky, disappearing through a trapdoor in a low-flying, and ominously dark, cumulus cloud.

It was still snowing when she left the little house in the morning and the sky was ominously dark.

Behind her it was ominously dark; ahead, hundreds of gaps and holes let in the welling light of Candesce.