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An arcus cloud is a low, horizontal cloud formation, usually appearing as an accessory cloud to a cumulonimbus. Roll clouds and shelf clouds are the two main types of arcus clouds. They most frequently form along the leading edge or gust fronts of thunderstorms ; some of the most dramatic arcus formations mark the gust fronts of derecho ...
Clouds of the genus nimbostratus tend to bring constant precipitation and low visibility. This cloud type normally forms above 2 kilometres (6,600 ft) [10] from altostratus cloud but tends to thicken into the lower levels during the occurrence of precipitation. The top of a nimbostratus deck is usually in the middle level of the troposphere.
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).
A Morning Glory cloud is a roll cloud, or arcus cloud, that can be up to 1,000 kilometres (620 mi) long, [2] 1 to 2 kilometres (0.62 to 1.24 mi) high, often only 100 to 200 metres (330 to 660 ft) above the ground.
An accessory cloud is a cloud which is dependent on a larger cloud system for its development and continuance. It is often an appendage but also can be adjacent to the parent cloud system. It is often an appendage but also can be adjacent to the parent cloud system.
Arcus cloud#Roll cloud To a section : This is a redirect from a topic that does not have its own page to a section of a page on the subject. For redirects to embedded anchors on a page, use {{ R to anchor }} instead .
Horizontal convective rolls, also known as horizontal roll vortices or cloud streets, are long rolls of counter-rotating air that are oriented approximately parallel to the ground in the planetary boundary layer. Although horizontal convective rolls, also known as cloud streets, have been clearly seen in satellite photographs for the last 30 ...
The name Urdu was first introduced by the poet Ghulam Hamadani Mushafi around 1780. [29] [30] As a literary language, Urdu took shape in courtly, elite settings. [80] [81] While Urdu retained the grammar and core Indo-Aryan vocabulary of the local Indian dialect Khariboli, it adopted the Perso-Arab writing system, written in the Nastaleeq style.