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 thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

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

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

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

A type of cloud consisting mostly of small particles such as ice particles.

A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...

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

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

The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.