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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

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

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

Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...

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

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

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

A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...