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A shelf cloud is a low, horizontal, wedge-shaped arcus cloud attached to the base of the parent cloud, which is usually a thunderstorm cumulonimbus, but could form on any type of convective clouds. Rising air motion can often be seen in the leading (outer) part of the shelf cloud, while the underside can often appear as turbulent and wind-torn.
Arcus (including roll and shelf clouds) Low, horizontal cloud formation associated with the leading edge of thunderstorm outflow. Tuba Column hanging from the cloud base which can develop into a funnel cloud or tornado. [13] Accessory clouds Seen with species and capillatus except where noted. Pannus
What is a shelf cloud? A shelf cloud can appear on the line of a series of storms, similar to what Des Moines saw Tuesday morning, said Dylan Dodson, a meteorologist with the National Weather Service.
Thunderstorm with lead gust front near Brookhaven, New Mexico, United States, North America. The gust front is marked by a shelf cloud.. An outflow boundary, also known as a gust front or arc cloud, is the leading edge of gusty, cooler surface winds from thunderstorm downdrafts; sometimes associated with a shelf cloud or roll cloud.
The arcus and roll clouds, shelf cloud, wall cloud, and scud are examples of low level or vertical accessory clouds whilst the anvil, and overshooting top, are examples of high level accessory clouds. The condensation funnel of funnel clouds and tornadoes are also accessory clouds.
A shelf cloud, such as this one, can be a sign that a squall is imminent. A mesoscale convective system (MCS) is a complex of thunderstorms that becomes organized on a scale larger than the individual thunderstorms but smaller than extratropical cyclones, and normally persists for several hours or more.
Scud clouds are a type of cloud formation that are "low, ragged cloud fragments that can sometimes be located near the updraft region of the storm," according to a storm spotting guide from the ...
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