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

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

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

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

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

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

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.

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

A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.

A large body of air having similar horizontal temperature and moisture characteristics.