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

An instrument for measuring atmospheric pressure.

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

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

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

A large body of air having similar horizontal temperature and moisture characteristics.

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

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...