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

The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...

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

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

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

The amount of water vapor present in the air, which can affect comfort levels and weather conditions.

A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...

A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.

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