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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

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

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...

A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...

The scientific study of climate, focusing on the analysis of long-term weather patterns and trends over time.

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

A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...

An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....

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