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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

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

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

A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

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

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

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

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

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