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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

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

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

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

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

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

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

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

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

A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...