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

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

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

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

A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...

A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...

Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...

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

Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

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