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

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

A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.

Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

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

A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...

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

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

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...