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

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

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

Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...

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

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

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

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