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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 distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

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

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...

A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

A cloud of irregular appearance, composed of irregular cloud fragments.

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...

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

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.