The circular or elliptical gaps in the cloud cover appear to be punched out from the sky. Here's what causes them.

Eagle-eyed Tampa Bay residents spotted an unusual – and very cool – cloud formation in the afternoon sky on Tuesday. As Max ...

Eagle-eyed Tampa Bay residents spotted an unusual - and very cool - cloud formation in the afternoon sky on Tuesday. Max ...

The formation is called a fallstreak hole, or a hole punch cloud. It's a circular or elliptical gap that can appear in a deck of cirrocumulus or altocumulus clouds.

What causes cloud streets? The exact reason for why cloud streets form is not well understood, but the mechanisms that lead to their formation is more clearly understood.

What makes this type of cloud formation so unique and how do they form? Weather satellite imagery shows the so-called cloud streets that formed over Southeast Texas on Monday.

VIRGINIA BEACH, Va. — An impressive shelf cloud formation was seen over much of Hampton Roads late on Saturday afternoon. That might have people wondering what exactly causes these visually ...