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

Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which...

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

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

Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...

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

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.