Dark blue cloudy sky

What is La Niña?

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global weather patterns such as reduced rainfall in some areas and increased rainfall in others.

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Glossary

Snow that rises to 8 feet or higher.

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

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

A large body of air having similar horizontal temperature and moisture characteristics.

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

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

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

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...

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