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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

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

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

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

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

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

The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.

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

Meteorology is the scientific study of the atmosphere and weather processes. It involves observing, analyzing, and forecasting...

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...

The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...