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

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...

Snow that rises to 8 feet or higher.

A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...

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

Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

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