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

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

The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

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

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

The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...

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

Coastal flooding occurs when water from the ocean, sea, or large lakes inundates land areas along the coast, usually due...