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

Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...

The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.

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

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

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...

A type of cloud consisting mostly of small particles such as ice particles.

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...