Anvil Cloud: The upper flattened portion of a cumulonimbus cloud that spreads out when it meets the tropopause.
Aphelion: The location in the orbit when Earth (or any other planet) is farthest away from the Sun.
anvil cloud"The anvil-shaped cloud that comprises the upper portion of mature cumulonimbus clouds; the popular name given to a cumulonimbus capillatus cloud, particularly if it embodies the supplementary feature incus (from the Latin for anvil).
Anvil Cloud
A Cirriform cloud, with an anvil shape, which forms the upper part of a well-developed Cumulonimbus. Its glaciated top spreads out horizontally upon reaching the tropopause or by the action of the winds aloft.
Anvil Cloud- The flat, spreading top of a Cb (cumulonimbus), often shaped like an anvil. Thunderstorm anvils may spread hundreds of miles downwind from the thunderstorm itself, and sometimes may spread upwind (see back-sheared anvil).
anvil cloud—Popular name given to the top portion of a cumulonimbus cloud having an anvil-like form.
APOB—A sounding made by an aircraft.
Anvil (Anvil Cloud) - a supplementary cloud feature viewed as the spreading of the upper portion of a cumulonimbus cloud; thunderstorm anvils may spread hundreds of miles downwind from the storm's updraft ...
Anvil Cloud: A cloud which forms at the top of a thunderstorm and is flattened out buy the wind and resembles an anvil.
AO1 Weather Station: AO1 is an automated station without a precipitation sensor.
The second satellite photo shows a huge anvil cloud arising from a large cluster of storms. This is called a mesoscale convective system or "MCS".
What is the Anvil Rule for Thunderstorms?
NASA launch protocols include data on weather and events within the atmosphere. Learn how anvil clouds form and why they are dangerous to the launch of a space shuttle.
The name "mammatus" is derived from the Latin mamma (breast), due to the resemblance between the shape of these clouds and human female breasts. Mammatus are most often found on the anvil cloud that extends from a cumulonimbus, ...
 See also: Anvil, Cloud, Storm, Thunderstorm, Clouds
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