Dark blue cloudy sky

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

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

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

The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

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

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

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

A type of cloud consisting mostly of small particles such as ice particles.

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...