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

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

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...

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

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

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

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

The term used for turbulence occurring in the absence of clouds or cloud-like elements in the visible area. It is often observed...