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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 weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

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

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which...

Meteorology is the scientific study of the atmosphere and weather processes. It involves observing, analyzing, and forecasting...

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

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

A very cold high pressure that originates over the Arctic Ocean.

Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...

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