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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

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

The amount of water vapor present in the air, which can affect comfort levels and weather conditions.

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

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

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

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

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

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

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

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