Cumulonimbus capillatus incus
|Genus||Cumulonimbus (heap, cloud/severe rain)|
|Classification||Family D (Vertically developed)|
|Appearance||Large flat-top cloud|
|Precipitation cloud?||Yes, often intense|
A cumulonimbus incus (Latin incus, "anvil") is a cumulonimbus cloud which has reached the level of stratospheric stability and has formed the characteristic flat, anvil-top shape. They can form into supercells resulting in severe storm phenomena such as tornadoes.
A cumulonimbus incus is a mature thunderstorm cloud and can produce many dangerous elements.
- Lightning; this storm cloud is capable of producing bursts of cloud to ground lightning.
- Hail; hailstones may fall from this cloud if it is in a highly unstable environment (which favors a more vigorous storm updraft).
- Heavy rain; the cloud may drop several inches of rain in a short amount of time. This can cause flash flooding
- Tornadoes; in severe cases (most commonly with supercells), cumulonimbus incus can produce tornadoes.
This is a powerful cumulonimbus cloud. If the correct atmospheric conditions are met, they can grow into a supercell storm. This cloud may be a single-cell storm or it may be one cell in a multi-cell storm. They are capable of producing severe storm conditions for a short amount of time.
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