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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

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

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

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The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...

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

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

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