Behind them the sky rumbled and turned black, another late storm rolling down from the Blight.

The rain had slacked off a little, but in the distance, the sky rumbled with the promise of more.

The sky rumbled loudly as she drove; the wind whipped her long hair around her face.

Throughout the morning, the sky rumbled with thunder and the sun hid behind a solid gray expanse of clouds.

The sky rumbled like a jet was passing overhead, though one wasn't, and the air turned a different colour, darkening several shades.

The ground beneath them seemed to throb and the sky rumbled and growled.

The sky rumbled with the arrival of another starship.

The sky rumbled above them, and clouds began to mass.

The sky rumbled again and a breeze came up when the mist turned to showers.

That the skies rumbled ominously and lightning blasted the mountains to the west disturbed only a few.