Dark blue cloudy sky

What is Alto?

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus and altocumulus. These clouds are often associated with changing weather patterns.

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Glossary

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An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....

The scientific study of climate, focusing on the analysis of long-term weather patterns and trends over time.

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.

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Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....

A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.