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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

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...

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

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...

A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.

Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...

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

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

An instrument for measuring atmospheric pressure.

Indicates the amount of water the soil can absorb/retain through percolation. This capacity is around 7% in sandy soil and...