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

A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...

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

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

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

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.

Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

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