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 polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.

An instrument for measuring atmospheric pressure.

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

A type of cloud consisting mostly of small particles such as ice particles.

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...