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

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.

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

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

Coastal flooding occurs when water from the ocean, sea, or large lakes inundates land areas along the coast, usually due...

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

The term 'cloudy' refers to weather conditions characterized by a significant amount of cloud cover in the sky. This may...

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...

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