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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 lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

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

Weather intelligence is technology that provides predictive and actionable insights, allowing businesses to adapt to weather-related...

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

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...

A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...