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 bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

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

A very cold high pressure that originates over the Arctic Ocean.

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.

Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...

Indicates the amount of water the soil can absorb/retain through percolation. This capacity is around 7% in sandy soil and...

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

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

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