Dark blue cloudy sky

What is Relative Humidity?

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

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Glossary

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

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

Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...

A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...

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

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

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

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 amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...