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 expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....

A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

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

A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...

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

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

The belt between 50-70 ° N and S latitudes in the Northern and Southern Hemispheres, adjacent to the Polar Region. Although...

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

The term 'cloudy' refers to weather conditions characterized by a significant amount of cloud cover in the sky. This may...