What is Closed Row (Cut Off Low)?

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation patterns. These systems are surrounded by high-pressure areas and can result in persistent weather conditions such as heavy rain, thunderstorms, or cold temperatures in a localized area.

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Glossary

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

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...

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

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

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

A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...

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