Dark blue cloudy sky

What is Cumulus?

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds under the right conditions.

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Glossary

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...

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

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

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

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

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

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

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