Dark blue cloudy sky

What is Trough?

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms and rain.

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Glossary

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

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

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

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

An instrument for measuring atmospheric pressure.

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.

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

Perhaps you have come across them, maybe you are seeing them for the first time. These clouds, known as wave clouds, resemble...

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

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