Arcus clouds are a low, horizontal cloud formation that are typically associated with the leading edge of a thunderstorm or ...

GREENSBORO, N.C. — If you’ve ever looked up and seen a dark, menacing cloud stretching across the sky like a giant wedge, you’ve likely witnessed a shelf cloud.

Dear Tom,I noticed an interesting cloud formation: A horizontal line that was cloudy on the bottom and blue sky above. What was it?—Evelyn Schmidt, NapervilleDear Evelyn,Your description is ...

Meteorologists have confirmed the formation was a shelf cloud, a low, wedge-shaped cloud that forms along the leading edge of a thunderstorm's gust front. It is a type of arcus cloud, and its ...

Cloud formations often give us warning of what is coming, or occurring nearby. For example, we have our local cloud cap over the mountains behind Goleta and Santa Barbara that seafaring people ...

According to the Glossary, an Arcus cloud is, “A low, horizontal cloud formation associated with the leading edge of thunderstorm outflow (i.e., the gust front).” ...

This cloud is known as a roll cloud. The National Weather Service defines a roll cloud as “A low, horizontal tube-shaped arcus cloud associated with a thunderstorm gust front (or sometimes with ...

A shelf cloud shows up on the leading edge of a line of strong storms. When you see a setup like this, expect the wind to get strong when the cloud formation gets closer to you.

Humidity hovering over the surface of Lake Michigan helped to form a spectacularly skinny roll cloud Monday afternoon over ...

The formations appear when a horizontal cloud drifts over a column of warmer air, the group explained. On occasion, the warmest part of the air column will hit the cloud dead center, causing that ...

Not to be confused with funnel clouds, roll clouds typically look like they're "rolling" around on a horizontal axis. Alan, thanks for sharing with the 10 Tampa Bay team!