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Cumulonimbus (from Latin cumulus 'swell' and nimbus 'cloud') is a dense, towering, vertical cloud, [1] typically forming from water vapor condensing in the lower troposphere that builds upward carried by powerful buoyant air currents.
A thunderstorm, also known as an electrical storm or a lightning storm, is a storm characterized by the presence of lightning [1] and its acoustic effect on the Earth's atmosphere, known as thunder. [2] Relatively weak thunderstorms are sometimes called thundershowers. [3] Thunderstorms occur in a type of cloud known as a cumulonimbus. [4]
A cumulonimbus incus (from Latin incus 'anvil'), also called an anvil cloud, is a cumulonimbus cloud that has reached the level of stratospheric stability and has formed the characteristic flat, anvil-shaped top. [1] It signifies a thunderstorm in its mature stage, succeeding the cumulonimbus calvus stage. [2]
Lieutenant Colonel William Henry Rankin (October 16, 1920 – July 6, 2009) was the first person to survive a fall from the top of a cumulonimbus thunderstorm cloud. [1] He was a pilot in the United States Marine Corps and a World War II and Korean War veteran.
But just because the cloud is mature, doesn’t mean it’s going to play nicely. An anvil, also known as an anvil top or cumulonimbus incus (try saying that three times fast), signifies a very ...
Thus, pulse-like summer thunderstorms can be used during cross-country flights, [8] since the glider will move away from the cumulonimbus after having (in theory) climbed up to 500 feet below the cloud base (the maximum permissible height in the United States) and the passage of the glider in the proximity of the thunderstorm will be short.
Floods, hurricanes, tornadoes, and thunderstorms are considered to be the most destructive weather-related natural disasters. Although these weather phenomena are all related to cumulonimbus clouds, they form and develop under different conditions and geographic locations.
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.