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

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

A body that has the property of absorbing all electromagnetic radiation falling on it, and therefore is the theoretical body...

A type of cloud consisting mostly of small particles such as ice particles.

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...

A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...