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

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

A cloud of irregular appearance, composed of irregular cloud fragments.

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

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

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...

The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...

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

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...