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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 amount of water vapor present in the air, which can affect comfort levels and weather conditions.

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

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

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

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...

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

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

The scientific study of climate, focusing on the analysis of long-term weather patterns and trends over time.