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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 large-scale movement of air that distributes heat and moisture around the Earth, influencing weather patterns and climatic...

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

A periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...

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

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

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...

A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...

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

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