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

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

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

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

The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

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

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...