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

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which...

An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...

An instrument for measuring atmospheric pressure.

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...

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

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

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