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

An instrument for measuring atmospheric pressure.

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

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

Perhaps you have come across them, maybe you are seeing them for the first time. These clouds, known as wave clouds, resemble...

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...

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

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

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

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