thunderhead

I could see a thunderhead boiling up above Flagstaff, Arizona, 350 miles to the west.

The last we had known of the drivers was that they had been beyond Thunderhead, six miles of hard travel to the westward.

She still felt the effects of her adventure with the thunderhead.

After a spell like this they say of every thunderhead that appears, "That looks promising."

Then a majestic thunderhead in the blazing September sky caught his attention and the miracle happened.

Grogan had observed the darkening thunderhead of a frown on the wrestler's forehead.