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

Weather intelligence is technology that provides predictive and actionable insights, allowing businesses to adapt to weather-related...

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

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

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

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

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

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

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

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