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What is Heat Index?

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the 'apparent temperature.'

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Glossary

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

Meteorology is the scientific study of the atmosphere and weather processes. It involves observing, analyzing, and forecasting...

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

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

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...

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

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

A type of cloud consisting mostly of small particles such as ice particles.

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

A large body of air having similar horizontal temperature and moisture characteristics.