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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

The large-scale movement of air that distributes heat and moisture around the Earth, influencing weather patterns and climatic...

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

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

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

A large body of air having similar horizontal temperature and moisture characteristics.

CONQ is a meteorological abbreviation for significant convection observed in a specific area, often indicating unstable atmospheric...

A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.