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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

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 clouds consist of water droplets...

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.

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

A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...

A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.

The branch of science dealing with the laws of motion of air or other gases.

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

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