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What is Humidity?

The amount of water vapor present in the air, which can affect comfort levels and weather conditions.

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Glossary

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

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

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

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

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

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