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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

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

The term used for turbulence occurring in the absence of clouds or cloud-like elements in the visible area. It is often observed...

The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

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

The narrow region between 35-40 ° N and S latitudes in the Northern and Southern Hemispheres, lying between the tropical...

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

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

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

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