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

A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...

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

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

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...