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 cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

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

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

A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...

A type of cloud consisting mostly of small particles such as ice particles.

Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...

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

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

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...