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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 process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...

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

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

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...

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

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...