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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 formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

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

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

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

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

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

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

The scientific study of climate, focusing on the analysis of long-term weather patterns and trends over time.

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