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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

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

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

A body that has the property of absorbing all electromagnetic radiation falling on it, and therefore is the theoretical body...

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

The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...

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

Coastal flooding occurs when water from the ocean, sea, or large lakes inundates land areas along the coast, usually due...

A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...