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

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

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

A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

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

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

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

Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...