Dark blue cloudy sky

What is Cumulonimbus?

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe weather like hail or tornadoes.

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Glossary

The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

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

Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...

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

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...