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

The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....

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

A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...

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

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...

A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...

Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which...

A mass of very cold, dry air that mostly originates over the Arctic Ocean.