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

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...

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

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

A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

A cloud of irregular appearance, composed of irregular cloud fragments.

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

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