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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 middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...

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

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

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

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...

Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...