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

A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.

Air laden with sand and dust, common in areas devoid of permanent vegetation, especially deserts.

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.

A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...

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