Arcus cloud - Wikipedia
A roll cloud (Cloud Atlas name volutus) is a low, horizontal, tube-shaped, and relatively rare type of arcus cloud. They differ from shelf clouds by being completely detached from other cloud features. Roll clouds usually appear to be "rolling" about a horizontal axis.
What are roll clouds? And what they tell us about the atmosphere - MSN
Roll clouds can form along cold fronts and sea breezes in the absence of thunderstorms, but during unsettled weather, roll clouds can appear daunting as storms approach. Shelf...
13 Ominous Photos and Videos of Roll Clouds - Treehugger
2017年5月31日 · Roll clouds are a type of "arcus cloud," formed when updrafts and downdrafts churn the front edge of a thunderstorm (or cold front) into a sideways cylinder. But unlike shelf clouds, the other...
What Is a Roll Cloud? - Ablison
2024年10月24日 · A roll cloud is a low-level, horizontal tube-shaped cloud formation that appears to roll about a horizontal axis. It is typically associated with thunderstorms and can be a sign of a change in weather conditions.
roll cloud - Glossary of Meteorology
2024年3月27日 · A low-level, horizontal, tube-shaped arcus cloud associated with a gust front of a convective storm (or occasionally a cold front). Roll clouds are relatively rare; they are completely detached from the convective storm's cloud base, thus differentiating them from the …
Viral Video: Why Are "Roll Clouds" So Rare? - National Geographic
2013年11月17日 · It's called a "roll cloud," which is a type of arcus cloud—low, horizontal formations typically associated with thunderstorms. Depending on the conditions, a roll cloud "can last for several...
Weather Words: 'Roll Clouds' | Weather.com - The Weather Channel
2024年8月6日 · Roll clouds are a type of arcus clouds, spectacular low-level long and thin clouds that are associated with intense thunderstorms. They are often seen beneath cumulonimbus clouds.
Arcus Clouds: What They Are And How They Form - Own Your …
2024年3月8日 · A roll cloud is a rare type of arcus cloud characterized by its round tube-shaped formation, which forms at very low altitudes and appears to rotate on its horizontal axis. It acts as a single wave known as a soliton and, unlike a shelf …
New Cloud Types Added For the First Time in 30 Years
2017年3月22日 · A new cloud species has been added to the atlas called volutus, more commonly known as a roll cloud by meteorologists. Cloud species are subdivisions of the 10 basic cloud "genera," the WMO...
Stratocumulus volutus - Wikipedia
Stratocumulus volutus is a rare species of stratocumulus cloud, typically forming alone. [1] Volutus is translated from Latin, meaning revolve, being described as a roll cloud. [2] [3] Stratocumulus volutus clouds are low-level clouds, forming below 2,000 meters (6,600 feet).