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

Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which...

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

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

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

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

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

A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...

A large body of air having similar horizontal temperature and moisture characteristics.

An instrument for measuring atmospheric pressure.

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...