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...

Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...

A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

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

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...