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

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...

A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.

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

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.

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

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...

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