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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

Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....

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

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...

A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.

Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...

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

A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...

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 long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

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