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

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

A cloud of irregular appearance, composed of irregular cloud fragments.

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...

Air laden with sand and dust, common in areas devoid of permanent vegetation, especially deserts.

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

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