| While it poured from great, dark thunderheads, long patches of blue sky could still be seen. |
|
| It was only two hours past noon and the sky had become pitch dark with heavy thunderheads. |
|
| Luminous by lightning far above him were enormous thunderheads, crackling with fury energy and booming with mighty waves of thunder. |
|
| But Ben recognized the thunderheads, the big cumulus clouds, that were drifting our way. |
|
| A light rain sprinkled from dark thunderheads above but no one even noticed the mist. |
|
| We'll follow mountain-lion tracks and watch from remote plateaus as distant puffs of cloud build into towering thunderheads. |
|
| It's hot here, and there are thunderheads off in the distance toward the southwest, but there's only a gentle breeze blowing and the sun is shining down on us. |
|
| Time and again, the colourless, clear sky will marshal thunderheads, building them into great puffy dark cotton wool, filling the horizon from end to end. |
|
| The cameras could pick up flashes of lightning among the thunderheads. |
|
