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

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A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

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

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...

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

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