At the same time, openings appeared in the convoys of clouds, permitting glimpses of the puffy whiteness of billowing cumulus behind them, surrounded by blue sky. On occasion, for brief minutes ...

We heard a low rumble echoing up the valley between the hills. The rumble was followed by a loud clap of thunder and the rain ...

At these heights, the atmosphere is cold enough that clouds are typically composed of ice crystals, not water droplets. These ...