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

Coastal flooding occurs when water from the ocean, sea, or large lakes inundates land areas along the coast, usually due...

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

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

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

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

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

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

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...