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What is Weather?

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

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Glossary

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

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

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

The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...

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 jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...