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

Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...

A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...

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

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...

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

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

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

The branch of science dealing with the laws of motion of air or other gases.