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 large-scale movement of air that distributes heat and moisture around the Earth, influencing weather patterns and climatic...

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

A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...

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

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

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

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

Snow that rises to 8 feet or higher.

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

The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...