Incus (cloud)

Clouds : classification
Genera Cirrus Ci Cirrocumulus Cc Cirrostratus Cs Altocumulus Ac Altostratus As Stratocumulus Sc Stratus St. Cumulus Cu Nimbostratus Ns Cumulonimbus Cb	species calvus cal capillatus cap castellanus cas congestus con fibratus fib floccus flo fractus fra humilis hum lenticularis len mediocris med nebulosus neb spissatus spi stratiformis st uncinus unc volutus vol	Subspecies duplicatus you intortus in lacunosus la opacus op perlucidus pe radiatus ra translucidus tr undulatus un vertebratus ve Special forms arcus arc asperitas asp cauda cau cavum cav fluctus flu flumen flm incus inc mamma mam murus mur pannus pan pileus pil praecipitatio pra tuba tub velum vel virga vir

Incus (inc) ( Latin : “anvil”) is the upper part of a cumulonimbus cloud that has spread in the form of an anvil with a smooth, fibrous or striped appearance. The shape of the cloud arises from the fact that the upper part of the cloud is largely frozen and has expanded horizontally at the tropopause .

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  Cumulonimbus incus in Lorraine (France)

Web links

Karlsruhe Cloud Atlas:

• Cumulonimbus capillatus incus