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 temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...

An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...

The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....

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

The branch of science dealing with the laws of motion of air or other gases.

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...

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

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

An instrument for measuring atmospheric pressure.