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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.

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

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

A very cold high pressure that originates over the Arctic Ocean.

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

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...

A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...

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

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...