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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

Indicates the amount of water the soil can absorb/retain through percolation. This capacity is around 7% in sandy soil and...

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

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

The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...