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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 polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...

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

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

Weather intelligence is technology that provides predictive and actionable insights, allowing businesses to adapt to weather-related...

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

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

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...