A casual weather observer can make a general forecast just by looking up at the clouds. The types of formations can offer ...

Altocumulus clouds act as a visual cue for a changing weather pattern. These are the types of clouds that appear ahead of a strong cold front and are a common sight. They indicate the presence of a ...

On the morning of Feb. 18, 2015, a cluster of “punch hole clouds” wafted overhead. Scientifically known as cavum clouds, they are distinguished by giant circular or oblong holes that appear punched ...

PHOENIX — Have you seen clouds that look like something from another world? No, it's not aliens or UFOs, there is a scientific explanation for these cloud formations that look like flying saucers.

One day, shortly before sunset in the western sky over Chicago there was a layer of clouds that looked like it had a hole punched through it, with wispy clouds falling through. What causes that?