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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 tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...

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

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...

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

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

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

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