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

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

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

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...

A cloud of irregular appearance, composed of irregular cloud fragments.

A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.

A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...

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

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...