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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

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

Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....

A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...

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 tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.