Dark blue cloudy sky

What is Anvil Cloud?

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric stability level of the atmosphere. It forms in the upper parts of thunderstorms.

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Glossary

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.

Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...