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

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...

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

A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

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

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

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

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.