Why do altocumulus clouds appear ahead of a strong cold front on warm days? Altocumulus clouds act as a visual cue for a ...

When Powell resident Dave Varkony stepped outside at sunrise Sunday, he saw a "rope cloud" hovering over Heart Mountain.

A recent satellite image captured the reemergence of a unique, UFO-like cloud, known as the "Taieri Pet," which appears above New Zealand's South Island when conditions are just right.